From 79c4842803765bc6ec41a2a4c80d0d2ebc1554f0 Mon Sep 17 00:00:00 2001
From: Arda TANRIKULU <ardatanrikulu@gmail.com>
Date: Tue, 24 Dec 2019 20:33:22 -0500
Subject: [PATCH 1/8] Improvements for loaders

---
 packages/common/src/index.ts               |  2 +
 packages/common/src/parse-graphql-json.ts  | 43 ++++++++++++++
 packages/common/src/parse-graphql-sdl.ts   | 22 +++++++
 packages/core/src/import-parser/index.ts   | 23 +++++++-
 packages/loaders/git/src/index.ts          | 28 ++++-----
 packages/loaders/github/src/index.ts       | 24 +++-----
 packages/loaders/graphql-file/src/index.ts | 54 ++++++++---------
 packages/loaders/json-file/src/index.ts    | 69 ++++++++++------------
 8 files changed, 164 insertions(+), 101 deletions(-)
 create mode 100644 packages/common/src/parse-graphql-json.ts
 create mode 100644 packages/common/src/parse-graphql-sdl.ts

diff --git a/packages/common/src/index.ts b/packages/common/src/index.ts
index 238bd5ac..40f8d2ef 100644
--- a/packages/common/src/index.ts
+++ b/packages/common/src/index.ts
@@ -14,3 +14,5 @@ export * from './get-fields-with-directives';
 export * from './validate-documents';
 export * from './resolvers-composition';
 export * from './fix-schema-ast';
+export * from './parse-graphql-json';
+export * from './parse-graphql-sdl';
diff --git a/packages/common/src/parse-graphql-json.ts b/packages/common/src/parse-graphql-json.ts
new file mode 100644
index 00000000..b68fe0eb
--- /dev/null
+++ b/packages/common/src/parse-graphql-json.ts
@@ -0,0 +1,43 @@
+import { Source as GraphQLSource, buildClientSchema, parse, ParseOptions } from 'graphql';
+import { printSchemaWithDirectives, Source } from '.';
+import { GraphQLSchemaValidationOptions } from 'graphql/type/schema';
+
+function stripBOM(content: string): string {
+  content = content.toString();
+  // Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)
+  // because the buffer-to-string conversion in `fs.readFileSync()`
+  // translates it to FEFF, the UTF-16 BOM.
+  if (content.charCodeAt(0) === 0xfeff) {
+    content = content.slice(1);
+  }
+
+  return content;
+}
+
+function parseBOM(content: string): any {
+  return JSON.parse(stripBOM(content));
+}
+
+export function parseGraphQLJSON(location: string, jsonContent: string, options: ParseOptions & GraphQLSchemaValidationOptions): Source {
+  let parsedJson = parseBOM(jsonContent);
+
+  if (parsedJson['data']) {
+    parsedJson = parsedJson['data'];
+  }
+
+  if (parsedJson.kind === 'Document') {
+    const document = parsedJson;
+    return {
+      location,
+      document,
+    };
+  } else if (parsedJson.__schema) {
+    const schema = buildClientSchema(parsedJson, options);
+    return {
+      location,
+      document: parse(printSchemaWithDirectives(schema), options),
+      schema,
+    };
+  }
+  throw new Error(`Not valid JSON content`);
+}
diff --git a/packages/common/src/parse-graphql-sdl.ts b/packages/common/src/parse-graphql-sdl.ts
new file mode 100644
index 00000000..c555af81
--- /dev/null
+++ b/packages/common/src/parse-graphql-sdl.ts
@@ -0,0 +1,22 @@
+import { ParseOptions, DocumentNode, parse, Kind, Source as GraphQLSource } from 'graphql';
+
+export function parseGraphQLSDL(location: string, rawSDL: string, options: ParseOptions) {
+  let document: DocumentNode;
+  try {
+    document = parse(new GraphQLSource(rawSDL, location), options);
+  } catch (e) {
+    if (e.message.includes('EOF')) {
+      document = {
+        kind: Kind.DOCUMENT,
+        definitions: [],
+      };
+    } else {
+      throw e;
+    }
+  }
+  return {
+    location,
+    document,
+    rawSDL,
+  };
+}
diff --git a/packages/core/src/import-parser/index.ts b/packages/core/src/import-parser/index.ts
index 16b4a442..d23d6c6a 100644
--- a/packages/core/src/import-parser/index.ts
+++ b/packages/core/src/import-parser/index.ts
@@ -7,8 +7,8 @@ import { LoadSchemaOptions } from '../schema';
 import { completeDefinitionPool, ValidDefinitionNode } from './definition';
 import { Loader } from '@graphql-toolkit/common';
 import { OPERATION_KINDS } from '../documents';
+import { resolve, dirname, join } from 'path';
 import { realpathSync } from 'fs';
-import { join, dirname, resolve } from 'path';
 
 /**
  * Describes the information from a single import line
@@ -156,7 +156,26 @@ function resolveModuleFilePath(filePath: string, importFrom: string): string {
       return realpathSync(join(dirName, importFrom));
     } catch (e) {
       if (e.code === 'ENOENT') {
-        return resolveFrom(dirName, importFrom);
+        const addedExtensions = new Array<string>();
+        for (const graphqlFileExtension of ['.gql', '.gqls', '.graphql', '.graphqls']) {
+          if (!(graphqlFileExtension in require.extensions)) {
+            require.extensions[graphqlFileExtension] = () => ({});
+            addedExtensions.push(graphqlFileExtension);
+          }
+        }
+        function cleanRequireExtensions() {
+          for (const extension of addedExtensions) {
+            delete require.extensions[extension];
+          }
+        }
+        try {
+          const resolvedPath = resolveFrom(dirName, importFrom);
+          cleanRequireExtensions();
+          return resolvedPath;
+        } catch (e) {
+          cleanRequireExtensions();
+          throw e;
+        }
       }
     }
   }
diff --git a/packages/loaders/git/src/index.ts b/packages/loaders/git/src/index.ts
index 18e6e3b6..1f968598 100644
--- a/packages/loaders/git/src/index.ts
+++ b/packages/loaders/git/src/index.ts
@@ -1,6 +1,7 @@
-import { buildClientSchema, printSchema, parse, DocumentNode } from 'graphql';
-import { UniversalLoader } from '@graphql-toolkit/common';
+import { buildClientSchema, printSchema, parse, DocumentNode, Source as GraphQLSource, Kind, ParseOptions } from 'graphql';
+import { UniversalLoader, parseGraphQLSDL, parseGraphQLJSON } from '@graphql-toolkit/common';
 import simplegit from 'simple-git/promise';
+import { GraphQLSchemaValidationOptions } from 'graphql/type/schema';
 
 // git:branch:path/to/file
 function extractData(
@@ -21,6 +22,8 @@ function extractData(
   };
 }
 
+export type GitLoaderOptions = ParseOptions & GraphQLSchemaValidationOptions;
+
 export class GitLoader implements UniversalLoader {
   loaderId() {
     return 'git-loader';
@@ -28,35 +31,26 @@ export class GitLoader implements UniversalLoader {
   async canLoad(pointer: string) {
     return typeof pointer === 'string' && pointer.toLowerCase().startsWith('git:');
   }
-  async load(pointer: string) {
+  async load(pointer: string, options: GitLoaderOptions) {
     const { ref, path } = extractData(pointer);
     const git = simplegit();
 
-    let schemaString: string;
+    let content: string;
 
     try {
-      schemaString = await git.show([`${ref}:${path}`]);
+      content = await git.show([`${ref}:${path}`]);
     } catch (error) {
       throw new Error('Unable to load schema from git: ' + error);
     }
 
-    let document: DocumentNode;
-
     if (/\.(gql|graphql)s?$/i.test(path)) {
-      document = parse(schemaString);
+      return parseGraphQLSDL(pointer, content, options);
     }
 
     if (/\.json$/i.test(path)) {
-      document = parse(printSchema(buildClientSchema(JSON.parse(schemaString))));
-    }
-
-    if (!document) {
-      throw new Error('Unable to build schema from git');
+      return parseGraphQLJSON(pointer, content, options);
     }
 
-    return {
-      location: pointer,
-      document,
-    };
+    throw new Error(`Invalid file extension: ${path}`);
   }
 }
diff --git a/packages/loaders/github/src/index.ts b/packages/loaders/github/src/index.ts
index b0e35fcd..aff64c10 100644
--- a/packages/loaders/github/src/index.ts
+++ b/packages/loaders/github/src/index.ts
@@ -1,6 +1,7 @@
-import { buildClientSchema, printSchema, parse, DocumentNode } from 'graphql';
-import { UniversalLoader } from '@graphql-toolkit/common';
+import { buildClientSchema, printSchema, parse, DocumentNode, ParseOptions } from 'graphql';
+import { UniversalLoader, parseGraphQLSDL, parseGraphQLJSON } from '@graphql-toolkit/common';
 import { fetch } from 'cross-fetch';
+import { GraphQLSchemaValidationOptions } from 'graphql/type/schema';
 
 // github:owner/name#ref:path/to/file
 function extractData(
@@ -23,7 +24,7 @@ function extractData(
   };
 }
 
-export interface GithubLoaderOptions {
+export interface GithubLoaderOptions extends ParseOptions, GraphQLSchemaValidationOptions {
   token: string;
 }
 
@@ -76,25 +77,16 @@ export class GithubLoader implements UniversalLoader<GithubLoaderOptions> {
       throw new Error('Unable to download schema from github: ' + errorMessage);
     }
 
-    const schemaString = response.data.repository.object.text;
-
-    let document: DocumentNode;
+    const content = response.data.repository.object.text;
 
     if (/\.(gql|graphql)s?$/i.test(path)) {
-      document = parse(schemaString);
+      return parseGraphQLSDL(pointer, content, options);
     }
 
     if (/\.json$/i.test(path)) {
-      document = parse(printSchema(buildClientSchema(JSON.parse(schemaString))));
-    }
-
-    if (!document) {
-      throw new Error('Unable to build schema from GitHub');
+      return parseGraphQLJSON(pointer, content, options);
     }
 
-    return {
-      location: pointer,
-      document,
-    };
+    throw new Error(`Invalid file extension: ${path}`);
   }
 }
diff --git a/packages/loaders/graphql-file/src/index.ts b/packages/loaders/graphql-file/src/index.ts
index 8e983126..528ce47e 100644
--- a/packages/loaders/graphql-file/src/index.ts
+++ b/packages/loaders/graphql-file/src/index.ts
@@ -1,12 +1,33 @@
 import { Source, UniversalLoader, DocumentPointerSingle, SchemaPointerSingle, isValidPath } from '@graphql-toolkit/common';
-import { parse, Source as GraphQLSource, Kind } from 'graphql';
+import { parse, Source as GraphQLSource, Kind, DocumentNode, ParseOptions } from 'graphql';
 import { extname, isAbsolute, resolve } from 'path';
 import { readFileSync, existsSync } from 'fs';
 
-export type GraphQLFileLoaderOptions = { skipGraphQLImport?: boolean; cwd?: string };
+export type GraphQLFileLoaderOptions = { skipGraphQLImport?: boolean; cwd?: string } & ParseOptions;
 
 const GQL_EXTENSIONS = ['.gql', '.graphql', '.graphqls'];
 
+export function parseGraphQLSDL(location: string, rawSDL: string, options: ParseOptions) {
+  let document: DocumentNode;
+  try {
+    document = parse(new GraphQLSource(rawSDL, location), options);
+  } catch (e) {
+    if (e.message.includes('EOF')) {
+      document = {
+        kind: Kind.DOCUMENT,
+        definitions: [],
+      };
+    } else {
+      throw e;
+    }
+  }
+  return {
+    location,
+    document,
+    rawSDL,
+  };
+}
+
 export class GraphQLFileLoader implements UniversalLoader<GraphQLFileLoaderOptions> {
   loaderId(): string {
     return 'graphql-file';
@@ -28,33 +49,8 @@ export class GraphQLFileLoader implements UniversalLoader<GraphQLFileLoaderOptio
 
   async load(pointer: SchemaPointerSingle | DocumentPointerSingle, options: GraphQLFileLoaderOptions): Promise<Source> {
     const normalizedFilePath = isAbsolute(pointer) ? pointer : resolve(options.cwd || process.cwd(), pointer);
-    const content = readFileSync(normalizedFilePath, 'utf-8').trim();
-
-    if (content && content !== '') {
-      if (!options.skipGraphQLImport && /^\#.*import /i.test(content.trimLeft())) {
-        return {
-          location: pointer,
-          get document() {
-            try {
-              return parse(new GraphQLSource(content, pointer));
-            } catch (e) {
-              return {
-                kind: Kind.DOCUMENT,
-                definitions: [],
-              };
-            }
-          },
-          rawSDL: content,
-        };
-      } else {
-        return {
-          location: pointer,
-          document: parse(new GraphQLSource(content, pointer)),
-          rawSDL: content,
-        };
-      }
-    }
+    const rawSDL = readFileSync(normalizedFilePath, 'utf-8').trim();
 
-    return null;
+    return parseGraphQLSDL(pointer, rawSDL, options);
   }
 }
diff --git a/packages/loaders/json-file/src/index.ts b/packages/loaders/json-file/src/index.ts
index 57c21ece..7fb16683 100644
--- a/packages/loaders/json-file/src/index.ts
+++ b/packages/loaders/json-file/src/index.ts
@@ -15,10 +15,34 @@ function stripBOM(content: string): string {
   return content;
 }
 
-function parseBOM(content: string): IntrospectionQuery {
+function parseBOM(content: string): any {
   return JSON.parse(stripBOM(content));
 }
 
+export function parseGraphQLJSON(pointer: string, jsonContent: string): Source {
+  let parsedJson = parseBOM(jsonContent);
+
+  if (parsedJson['data']) {
+    parsedJson = parsedJson['data'];
+  }
+
+  if (parsedJson.kind === 'Document') {
+    const document = parsedJson;
+    return {
+      location: pointer,
+      document,
+    };
+  } else if (parsedJson.__schema) {
+    const schema = buildClientSchema(parsedJson, options as any);
+    return {
+      location: pointer,
+      document: parse(printSchemaWithDirectives(schema)),
+      schema,
+    };
+  }
+  throw new Error(`Not valid content`);
+}
+
 export interface JsonFileLoaderOptions {
   cwd?: string;
 }
@@ -43,42 +67,13 @@ export class JsonFileLoader implements DocumentLoader {
   }
 
   async load(pointer: SchemaPointerSingle, options: JsonFileLoaderOptions): Promise<Source> {
-    return new Promise<Source>((resolve, reject) => {
-      const normalizedFilepath = isAbsolute(pointer) ? pointer : resolvePath(options.cwd || process.cwd(), pointer);
-
-      if (existsSync(normalizedFilepath)) {
-        try {
-          const fileContent = readFileSync(normalizedFilepath, 'utf8');
-
-          if (!fileContent) {
-            reject(`Unable to read local introspection file: ${normalizedFilepath}`);
-          }
+    const normalizedFilepath = isAbsolute(pointer) ? pointer : resolvePath(options.cwd || process.cwd(), pointer);
 
-          let introspection = parseBOM(fileContent);
-
-          if (introspection['data']) {
-            introspection = introspection['data'] as IntrospectionQuery;
-          }
-
-          if (!introspection.__schema) {
-            throw new Error('Invalid schema provided!');
-          }
-
-          const schema = buildClientSchema(introspection, options as any);
-
-          resolve({
-            location: pointer,
-            get document() {
-              return parse(printSchemaWithDirectives(schema));
-            },
-            schema,
-          });
-        } catch (e) {
-          reject(e);
-        }
-      } else {
-        reject(`Unable to locate local introspection file: ${normalizedFilepath}`);
-      }
-    });
+    try {
+      const jsonContent = readFileSync(normalizedFilepath, 'utf8');
+      return parseGraphQLJSON(pointer, jsonContent);
+    } catch (e) {
+      throw new Error(`Unable to read JSON file: ${normalizedFilepath}`);
+    }
   }
 }

From a21306c8111a7b9d21b029d771b36295706dd1dd Mon Sep 17 00:00:00 2001
From: Arda TANRIKULU <ardatanrikulu@gmail.com>
Date: Wed, 25 Dec 2019 03:36:02 -0500
Subject: [PATCH 2/8] WIP

---
 packages/common/src/loaders.ts                |  25 +-
 packages/core/src/documents.ts                |   8 +-
 packages/core/src/import-parser/index.ts      | 196 ++-----------
 packages/core/src/load-typedefs.ts            | 263 +++++++++---------
 packages/core/src/schema.ts                   |  10 +-
 .../tests/__mocks__/cross-fetch.js            |   0
 .../tests/__mocks__/fs.js                     |   0
 .../documents/documents-from-glob.spec.ts     |  40 ++-
 .../documents/test-files/1.query.graphql      |   0
 .../loaders/documents/test-files/2.graphql    |   0
 .../documents/test-files/invalid-doc.graphql  |   0
 .../loaders/documents/test-files/tags.js      |   0
 .../documents/test-files/test.empty.graphql   |   0
 .../schema/fixtures/circular/a.graphql        |   0
 .../schema/fixtures/circular/b.graphql        |   0
 .../schema/fixtures/circular/c.graphql        |   0
 .../schema/fixtures/collision/a.graphql       |   0
 .../schema/fixtures/collision/b.graphql       |   0
 .../loaders/schema/fixtures/complex/a.graphql |   0
 .../loaders/schema/fixtures/complex/b.graphql |   0
 .../schema/fixtures/directive/a.graphql       |   0
 .../schema/fixtures/directive/b.graphql       |   0
 .../schema/fixtures/directive/c.graphql       |   0
 .../schema/fixtures/directive/d.graphql       |   0
 .../schema/fixtures/directive/e.graphql       |   0
 .../schema/fixtures/directive/f.graphql       |   0
 .../schema/fixtures/directive/g.graphql       |   0
 .../loaders/schema/fixtures/enums/a.graphql   |   0
 .../loaders/schema/fixtures/enums/b.graphql   |   0
 .../schema/fixtures/field-types/a.graphql     |   0
 .../schema/fixtures/field-types/b.graphql     |   0
 .../schema/fixtures/field-types/c.graphql     |   0
 .../loaders/schema/fixtures/global/a.graphql  |   0
 .../schema/fixtures/import-all/a.graphql      |   0
 .../schema/fixtures/import-all/b.graphql      |   0
 .../schema/fixtures/import-all/c.graphql      |   0
 .../fixtures/import-duplicate/a.graphql       |   0
 .../fixtures/import-duplicate/all.graphql     |   0
 .../loaders/schema/fixtures/import-gql/a.gql  |   0
 .../schema/fixtures/import-module/a.graphql   |   0
 .../schema/fixtures/import-nested/a.graphql   |   0
 .../schema/fixtures/import-nested/all.graphql |   0
 .../schema/fixtures/import-nested/b.graphql   |   0
 .../schema/fixtures/import-nested/c.graphql   |   0
 .../schema/fixtures/imports-only/a.graphql    |   0
 .../schema/fixtures/imports-only/all.graphql  |   0
 .../schema/fixtures/imports-only/b.graphql    |   0
 .../schema/fixtures/input-types/a.graphql     |   0
 .../schema/fixtures/input-types/b.graphql     |   0
 .../schema/fixtures/input-types/c.graphql     |   0
 .../interfaces-implements-many/a.graphql      |   0
 .../interfaces-implements-many/b.graphql      |   0
 .../fixtures/interfaces-implements/a.graphql  |   0
 .../fixtures/interfaces-implements/b.graphql  |   0
 .../schema/fixtures/interfaces-many/a.graphql |   0
 .../schema/fixtures/interfaces-many/b.graphql |   0
 .../schema/fixtures/interfaces-many/c.graphql |   0
 .../schema/fixtures/interfaces-many/d.graphql |   0
 .../schema/fixtures/interfaces/a.graphql      |   0
 .../schema/fixtures/interfaces/b.graphql      |   0
 .../schema/fixtures/interfaces/c.graphql      |   0
 .../fixtures/merged-root-fields/a.graphql     |   0
 .../fixtures/merged-root-fields/b.graphql     |   0
 .../schema/fixtures/related-types/a.graphql   |   0
 .../schema/fixtures/related-types/b.graphql   |   0
 .../relative-paths/database/schema.graphql    |   0
 .../relative-paths/src/schema.graphql         |   0
 .../schema/fixtures/root-fields/a.graphql     |   0
 .../schema/fixtures/root-fields/b.graphql     |   0
 .../schema/fixtures/root-fields/c.graphql     |   0
 .../schema/fixtures/root-fields/d.graphql     |   0
 .../schema/fixtures/root-fields/e.graphql     |   0
 .../loaders/schema/fixtures/scalar/a.graphql  |   0
 .../loaders/schema/fixtures/scalar/b.graphql  |   0
 .../schema/fixtures/type-not-found/a.graphql  |   0
 .../schema/fixtures/type-not-found/b.graphql  |   0
 .../schema/fixtures/type-not-found/c.graphql  |   0
 .../schema/fixtures/type-not-found/d.graphql  |   0
 .../schema/fixtures/type-not-found/e.graphql  |   0
 .../schema/fixtures/type-not-found/f.graphql  |   0
 .../schema/fixtures/type-not-found/g.graphql  |   0
 .../loaders/schema/fixtures/unions/a.graphql  |   0
 .../loaders/schema/fixtures/unions/b.graphql  |   0
 .../loaders/schema/fixtures/unions/c.graphql  |   0
 .../loaders/schema/import-schema.spec.ts      |  39 ++-
 .../tests/loaders/schema/integration.spec.ts  |  16 +-
 .../loaders/schema/schema-from-export.spec.ts |  35 ++-
 .../schema/schema-from-typedefs.spec.ts       |  44 ++-
 .../tests/loaders/schema/test-files/1.ts      |   0
 .../tests/loaders/schema/test-files/10.tsx    |   0
 .../tests/loaders/schema/test-files/11.ts     |   0
 .../tests/loaders/schema/test-files/12.tsx    |   0
 .../tests/loaders/schema/test-files/13.tsx    |   0
 .../tests/loaders/schema/test-files/14.js     |   0
 .../tests/loaders/schema/test-files/15.js     |   0
 .../tests/loaders/schema/test-files/16.ts     |   0
 .../tests/loaders/schema/test-files/2.ts      |   0
 .../tests/loaders/schema/test-files/3.graphql |   0
 .../tests/loaders/schema/test-files/4.ts      |   0
 .../tests/loaders/schema/test-files/5.tsx     |   0
 .../tests/loaders/schema/test-files/6.ts      |   0
 .../tests/loaders/schema/test-files/7.ts      |   0
 .../tests/loaders/schema/test-files/8.ts      |   0
 .../tests/loaders/schema/test-files/9.ts      |   0
 .../schema/test-files/ByteOrderMask.json      |   0
 .../tests/loaders/schema/test-files/error.ts  |   0
 .../extensions/export-schema-with-def.js      |   0
 .../schema-dir/extensions/export-schema.js    |   0
 .../extensions/extend-query.graphql           |   0
 .../extensions/schema-with-extend.graphql     |   0
 .../schema-dir/extensions/type-defs.js        |   0
 .../test-files/schema-dir/query.graphql       |   0
 .../schema/test-files/schema-dir/schema.ts    |   0
 .../test-files/schema-dir/test.empty.graphql  |   0
 .../schema-dir/test.non-schema.graphql        |   0
 .../test-files/schema-dir/type-defs/custom.ts |   0
 .../test-files/schema-dir/type-defs/gatsby.ts |   0
 .../schema-dir/type-defs/graphql-tag.ts       |   0
 .../schema/test-files/schema-dir/user.graphql |   0
 packages/graphql-toolkit/.gitignore           |  72 -----
 packages/graphql-toolkit/.npmignore           |  13 -
 packages/graphql-toolkit/package.json         |  50 ----
 packages/graphql-toolkit/src/index.ts         |  38 ---
 packages/graphql-toolkit/tsconfig.json        |  23 --
 packages/loaders/apollo-engine/src/index.ts   |  11 +-
 packages/loaders/code-file/src/index.ts       |  63 ++---
 packages/loaders/git/src/index.ts             |   8 +-
 packages/loaders/github/src/index.ts          |   6 +-
 packages/loaders/graphql-file/src/index.ts    |  35 +--
 packages/loaders/json-file/src/index.ts       |  53 +---
 packages/loaders/module/src/index.ts          |   4 +-
 packages/loaders/url/src/index.ts             |  10 +-
 132 files changed, 348 insertions(+), 714 deletions(-)
 rename packages/{graphql-toolkit => core}/tests/__mocks__/cross-fetch.js (100%)
 rename packages/{graphql-toolkit => core}/tests/__mocks__/fs.js (100%)
 rename packages/{graphql-toolkit => core}/tests/loaders/documents/documents-from-glob.spec.ts (70%)
 rename packages/{graphql-toolkit => core}/tests/loaders/documents/test-files/1.query.graphql (100%)
 rename packages/{graphql-toolkit => core}/tests/loaders/documents/test-files/2.graphql (100%)
 rename packages/{graphql-toolkit => core}/tests/loaders/documents/test-files/invalid-doc.graphql (100%)
 rename packages/{graphql-toolkit => core}/tests/loaders/documents/test-files/tags.js (100%)
 rename packages/{graphql-toolkit => core}/tests/loaders/documents/test-files/test.empty.graphql (100%)
 rename packages/{graphql-toolkit => core}/tests/loaders/schema/fixtures/circular/a.graphql (100%)
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diff --git a/packages/common/src/loaders.ts b/packages/common/src/loaders.ts
index 2c4cbb39..b5cc3933 100644
--- a/packages/common/src/loaders.ts
+++ b/packages/common/src/loaders.ts
@@ -1,13 +1,24 @@
-import { DocumentNode, GraphQLSchema } from 'graphql';
+import { DocumentNode, GraphQLSchema, ParseOptions, BuildSchemaOptions } from 'graphql';
+import { GraphQLSchemaValidationOptions } from 'graphql/type/schema';
 
 export declare class Source {
-  document: DocumentNode;
+  document?: DocumentNode;
   schema?: GraphQLSchema;
   rawSDL?: string;
   location?: string;
-  constructor({ document, location, schema }: { document: DocumentNode; location?: string; schema?: GraphQLSchema });
+  constructor({ document, location, schema }: { document?: DocumentNode; location?: string; schema?: GraphQLSchema });
 }
 
+export type SingleFileOptions = ParseOptions &
+  GraphQLSchemaValidationOptions &
+  BuildSchemaOptions & {
+    noRequire?: boolean;
+    cache?: { [key: string]: Source };
+    loaders: Loader[];
+    filterKinds?: string[];
+    cwd?: string;
+  };
+
 export type WithList<T> = T | T[];
 export type ElementOf<TList> = TList extends Array<infer TElement> ? TElement : never;
 export type SchemaPointer = WithList<string>;
@@ -16,12 +27,12 @@ export type DocumentGlobPathPointer = string;
 export type DocumentPointer = WithList<DocumentGlobPathPointer>;
 export type DocumentPointerSingle = ElementOf<DocumentPointer>;
 
-export interface Loader<TPointer = string, TOptions = any> {
+export interface Loader<TPointer = string, TOptions extends SingleFileOptions = SingleFileOptions> {
   loaderId(): string;
   canLoad(pointer: TPointer, options?: TOptions): Promise<boolean>;
   load(pointer: TPointer, options?: TOptions): Promise<Source | null>;
 }
 
-export type SchemaLoader<TOptions = any> = Loader<SchemaPointerSingle, TOptions>;
-export type DocumentLoader<TOptions = any> = Loader<DocumentPointerSingle, TOptions>;
-export type UniversalLoader<TOptions = any> = Loader<SchemaPointerSingle | DocumentPointerSingle, TOptions>;
+export type SchemaLoader<TOptions extends SingleFileOptions = SingleFileOptions> = Loader<SchemaPointerSingle, TOptions>;
+export type DocumentLoader<TOptions extends SingleFileOptions = SingleFileOptions> = Loader<DocumentPointerSingle, TOptions>;
+export type UniversalLoader<TOptions extends SingleFileOptions = SingleFileOptions> = Loader<SchemaPointerSingle | DocumentPointerSingle, TOptions>;
diff --git a/packages/core/src/documents.ts b/packages/core/src/documents.ts
index 9faf9a05..51f0cf77 100644
--- a/packages/core/src/documents.ts
+++ b/packages/core/src/documents.ts
@@ -1,12 +1,12 @@
-import { Loader, Source } from '@graphql-toolkit/common';
+import { Source } from '@graphql-toolkit/common';
 import { Kind } from 'graphql';
-import { LoadTypedefsOptions, loadTypedefsUsingLoaders, UnnormalizedTypeDefPointer } from './load-typedefs';
+import { LoadTypedefsOptions, loadTypedefs, UnnormalizedTypeDefPointer } from './load-typedefs';
 
 export const OPERATION_KINDS = [Kind.OPERATION_DEFINITION, Kind.FRAGMENT_DEFINITION];
 export const NON_OPERATION_KINDS = Object.keys(Kind)
   .reduce((prev, v) => [...prev, Kind[v]], [])
   .filter(v => !OPERATION_KINDS.includes(v));
 
-export async function loadDocumentsUsingLoaders(loaders: Loader[], documentDef: UnnormalizedTypeDefPointer | UnnormalizedTypeDefPointer[], options: LoadTypedefsOptions = {}, cwd = process.cwd()): Promise<Source[]> {
-  return await loadTypedefsUsingLoaders(loaders, documentDef, { ...options, skipGraphQLImport: true, noRequire: true }, NON_OPERATION_KINDS, cwd);
+export function loadDocuments(documentDef: UnnormalizedTypeDefPointer | UnnormalizedTypeDefPointer[], options: LoadTypedefsOptions): Promise<Source[]> {
+  return loadTypedefs(documentDef, { noRequire: true, filterKinds: NON_OPERATION_KINDS, ...options });
 }
diff --git a/packages/core/src/import-parser/index.ts b/packages/core/src/import-parser/index.ts
index d23d6c6a..d2870fab 100644
--- a/packages/core/src/import-parser/index.ts
+++ b/packages/core/src/import-parser/index.ts
@@ -1,13 +1,9 @@
-import { DefinitionNode, parse, print, ObjectTypeDefinitionNode, DocumentNode, Kind } from 'graphql';
-import { flatten, groupBy, includes, keyBy, isEqual, uniqBy } from 'lodash';
+import { DefinitionNode } from 'graphql';
+import { groupBy, includes } from 'lodash';
 import resolveFrom from 'resolve-from';
-import { loadTypedefsUsingLoaders } from '../load-typedefs';
-import { LoadSchemaOptions } from '../schema';
 
-import { completeDefinitionPool, ValidDefinitionNode } from './definition';
-import { Loader } from '@graphql-toolkit/common';
-import { OPERATION_KINDS } from '../documents';
-import { resolve, dirname, join } from 'path';
+import { ValidDefinitionNode } from './definition';
+import { dirname, join } from 'path';
 import { realpathSync } from 'fs';
 
 /**
@@ -19,8 +15,6 @@ export interface RawModule {
   from: string;
 }
 
-const rootFields = ['Query', 'Mutation', 'Subscription'];
-
 const gqlExt = /\.g(raph)?ql$/;
 function isGraphQLFile(f: string) {
   return gqlExt.test(f);
@@ -64,75 +58,13 @@ export function parseSDL(sdl: string): RawModule[] {
     .map(parseImportLine);
 }
 
-/**
- * Main entry point. Recursively process all import statement in a schema
- *
- * @param filePath File path to the initial schema file
- * @returns Single bundled schema with all imported types
- */
-export async function processImportSyntax(schemaPointer: string, sdl: string, loaders: Loader[], options?: LoadSchemaOptions, cwd = process.cwd()): Promise<DocumentNode> {
-  const mergeableTypes = options.mergeableTypes || [];
-  const allMergeableTypes = [...mergeableTypes, ...rootFields];
-  let document = getDocumentFromSDL(sdl);
-
-  // Recursively process the imports, starting by importing all types from the initial schema
-  let { allDefinitions, typeDefinitions } = await collectDefinitions(['*'], sdl, schemaPointer, loaders, options, cwd);
-
-  // Post processing of the final schema (missing types, unused types, etc.)
-  // Query, Mutation and Subscription should be merged
-  // And should always be in the first set, to make sure they
-  // are not filtered out.
-  const firstTypes = flatten(typeDefinitions).filter(d => includes(allMergeableTypes, d.name.value));
-  const secondFirstTypes = typeDefinitions[0].filter(d => !includes(allMergeableTypes, d.name.value));
-  const otherFirstTypes = flatten(typeDefinitions.slice(1)).filter(d => !includes(allMergeableTypes, d.name.value));
-
-  const firstSet = firstTypes.concat(secondFirstTypes, otherFirstTypes);
-  const processedTypeNames = [];
-  const mergedFirstTypes = [];
-  for (const type of firstSet) {
-    if (!includes(processedTypeNames, type.name.value)) {
-      processedTypeNames.push(type.name.value);
-      mergedFirstTypes.push(type);
-    } else {
-      const existingType = mergedFirstTypes.find(t => t.name.value === type.name.value) as any;
-
-      existingType.fields = uniqBy(existingType.fields.concat((type as ObjectTypeDefinitionNode).fields), 'name.value');
-    }
-  }
-
-  document = {
-    ...document,
-    definitions: completeDefinitionPool(flatten(allDefinitions), firstSet, flatten(typeDefinitions)),
-  };
-  // Return the schema
-  return document;
-}
-
-/**
- * Parses a schema into a graphql DocumentNode.
- * If the schema is empty a DocumentNode with empty definitions will be created.
- *
- * @param sdl Schema to parse
- * @returns A graphql DocumentNode with definitions of the parsed sdl.
- */
-function getDocumentFromSDL(sdl: string): DocumentNode {
-  if (isEmptySDL(sdl)) {
-    return {
-      kind: Kind.DOCUMENT,
-      definitions: [],
-    };
-  } else {
-    return parse(sdl, { noLocation: true });
-  }
-}
-
 /**
  * Check if a schema contains any type definitions at all.
  *
  * @param sdl Schema to parse
  * @returns True if SDL only contains comments and/or whitespaces
  */
-function isEmptySDL(sdl: string): boolean {
+export function isEmptySDL(sdl: string): boolean {
   return (
     sdl
       .split('\n')
@@ -149,7 +81,7 @@ function isEmptySDL(sdl: string): boolean {
  * @param importFrom Path given for the import
  * @returns Full resolved path to a file
  */
-function resolveModuleFilePath(filePath: string, importFrom: string): string {
+export function resolveModuleFilePath(filePath: string, importFrom: string): string {
   const dirName = dirname(filePath);
   if (isGraphQLFile(filePath) && isGraphQLFile(importFrom)) {
     try {
@@ -183,86 +115,6 @@ function resolveModuleFilePath(filePath: string, importFrom: string): string {
   return importFrom;
 }
 
-/**
- * Recursively process all schema files. Keeps track of both the filtered
- * type definitions, and all type definitions, because they might be needed
- * in post-processing (to add missing types)
- *
- * @param imports Types specified in the import statement
- * @param sdl Current schema
- * @param filePath File location for current schema
- * @param Tracking of processed schemas (for circular dependencies)
- * @param Tracking of imported type definitions per schema
- * @param Tracking of all type definitions per schema
- * @returns Both the collection of all type definitions, and the collection of imported type definitions
- */
-async function collectDefinitions(
-  imports: string[],
-  sdl: string,
-  schemaPointer: string,
-  loaders: Loader[],
-  options?: LoadSchemaOptions,
-  cwd = process.cwd(),
-  processedFiles: Map<string, RawModule[]> = new Map(),
-  typeDefinitions: ValidDefinitionNode[][] = [],
-  allDefinitions: ValidDefinitionNode[][] = []
-): Promise<{
-  allDefinitions: ValidDefinitionNode[][];
-  typeDefinitions: ValidDefinitionNode[][];
-}> {
-  const key = isGraphQLFile(schemaPointer) ? resolve(schemaPointer) : schemaPointer;
-
-  // Get TypeDefinitionNodes from current schema
-  const document = getDocumentFromSDL(sdl);
-
-  // Add all definitions to running total
-  allDefinitions.push(filterTypeDefinitions(document.definitions));
-
-  // Filter TypeDefinitionNodes by type and defined imports
-  const currentTypeDefinitions = filterImportedDefinitions(imports, document.definitions, allDefinitions);
-
-  // Add typedefinitions to running total
-  typeDefinitions.push(currentTypeDefinitions);
-
-  // Read imports from current file
-  const rawModules = parseSDL(sdl);
-
-  // Process each file (recursively)
-  await Promise.all(
-    rawModules.map(async m => {
-      // If it was not yet processed (in case of circular dependencies)
-      const moduleFilePath = resolveModuleFilePath(schemaPointer, m.from);
-
-      const processedFile = processedFiles.get(key);
-      if (!processedFile || !processedFile.find(rModule => isEqual(rModule, m))) {
-        // Mark this specific import line as processed for this file (for cicular dependency cases)
-        processedFiles.set(key, processedFile ? processedFile.concat(m) : [m]);
-        const results = await loadTypedefsUsingLoaders(
-          loaders,
-          moduleFilePath,
-          {
-            ...options,
-            skipGraphQLImport: true,
-            forceRawSDL: true,
-            forceGraphQLImport: false,
-          },
-          OPERATION_KINDS,
-          cwd
-        );
-        await Promise.all(
-          results.map(async result => {
-            const rawSDL = result.rawSDL || print(result.document);
-            await collectDefinitions(m.imports, rawSDL, moduleFilePath, loaders, options, cwd, processedFiles, typeDefinitions, allDefinitions);
-          })
-        );
-      }
-    })
-  );
-
-  // Return the maps of type definitions from each file
-  return { allDefinitions, typeDefinitions };
-}
-
 /**
  * Filter the types loaded from a schema, first by relevant types,
  * then by the types specified in the import statement.
@@ -271,35 +123,31 @@ async function collectDefinitions(
  * @param typeDefinitions All definitions from a schema
  * @returns Filtered collection of type definitions
  */
-function filterImportedDefinitions(imports: string[], typeDefinitions: ReadonlyArray<DefinitionNode>, allDefinitions: ValidDefinitionNode[][] = []): ValidDefinitionNode[] {
+export function filterImportedDefinitions(imports: string[], typeDefinitions: ReadonlyArray<DefinitionNode>) {
   // This should do something smart with fields
 
-  const filteredDefinitions = filterTypeDefinitions(typeDefinitions);
-
   if (includes(imports, '*')) {
-    if (imports.length === 1 && imports[0] === '*' && allDefinitions.length > 1) {
-      const previousTypeDefinitions: { [key: string]: DefinitionNode } = keyBy(
-        flatten(allDefinitions.slice(0, allDefinitions.length - 1)).filter(def => !includes(rootFields, def.name.value)),
-        def => def.name.value
-      );
-      return typeDefinitions.filter(typeDef => typeDef.kind === 'ObjectTypeDefinition' && previousTypeDefinitions[typeDef.name.value]) as ObjectTypeDefinitionNode[];
-    }
-    return filteredDefinitions;
+    return typeDefinitions;
   } else {
-    const result = filteredDefinitions.filter(d =>
-      includes(
-        imports.map(i => i.split('.')[0]),
-        d.name.value
-      )
-    );
+    const result = typeDefinitions.filter(d => {
+      if ('name' in d) {
+        return includes(
+          imports.map(i => i.split('.')[0]),
+          d.name.value
+        );
+      }
+      return true;
+    });
     const fieldImports = imports.filter(i => i.split('.').length > 1);
     const groupedFieldImports = groupBy(fieldImports, x => x.split('.')[0]);
 
     for (const rootType in groupedFieldImports) {
       const fields = groupedFieldImports[rootType].map(x => x.split('.')[1]);
-      const objectTypeDefinition: any = filteredDefinitions.find(def => def.name.value === rootType);
+      const objectTypeDefinition: any = typeDefinitions.find(def => 'name' in def && def.name.value === rootType);
 
-      objectTypeDefinition.fields = objectTypeDefinition.fields.filter((f: any) => includes(fields, f.name.value) || includes(fields, '*'));
+      if ('fields' in objectTypeDefinition) {
+        objectTypeDefinition.fields = objectTypeDefinition.fields.filter((f: any) => includes(fields, f.name.value) || includes(fields, '*'));
+      }
     }
 
     return result;
@@ -312,7 +160,7 @@ function filterImportedDefinitions(imports: string[], typeDefinitions: ReadonlyA
  * @param definitions All definitions from a schema
  * @returns Relevant type definitions
  */
-function filterTypeDefinitions(definitions: ReadonlyArray<DefinitionNode>): ValidDefinitionNode[] {
+export function filterTypeDefinitions(definitions: ReadonlyArray<DefinitionNode>): ValidDefinitionNode[] {
   const validKinds = ['DirectiveDefinition', 'ScalarTypeDefinition', 'ObjectTypeDefinition', 'ObjectTypeExtension', 'InterfaceTypeDefinition', 'EnumTypeDefinition', 'UnionTypeDefinition', 'InputObjectTypeDefinition'];
   return definitions.filter(d => includes(validKinds, d.kind)).map(d => d as ValidDefinitionNode);
 }
diff --git a/packages/core/src/load-typedefs.ts b/packages/core/src/load-typedefs.ts
index 07a485d8..70d2d265 100644
--- a/packages/core/src/load-typedefs.ts
+++ b/packages/core/src/load-typedefs.ts
@@ -1,23 +1,17 @@
-import { GraphQLSchema, parse, DocumentNode, Source as GraphQLSource } from 'graphql';
-import { Source, asArray, isDocumentString, debugLog, fixWindowsPath, Loader, printSchemaWithDirectives, fixSchemaAst } from '@graphql-toolkit/common';
-import { filterKind } from './filter-document-kind';
+import { Source as GraphQLSource, GraphQLSchema, parse, Kind } from 'graphql';
+import { Source, asArray, isDocumentString, debugLog, fixWindowsPath, printSchemaWithDirectives, parseGraphQLSDL, fixSchemaAst, SingleFileOptions } from '@graphql-toolkit/common';
 import { join } from 'path';
 import isGlob from 'is-glob';
 import globby from 'globby';
-import { processImportSyntax } from './import-parser';
-
-export type SingleFileOptions<ExtraConfig = { [key: string]: any }> = ExtraConfig & {
-  noRequire?: boolean;
-  skipGraphQLImport?: boolean;
-  forceRawSDL?: boolean;
-  forceGraphQLImport?: boolean;
-  mergeableTypes?: [string];
-};
+import { filterKind } from './filter-document-kind';
+import { parseSDL, isEmptySDL, filterImportedDefinitions, resolveModuleFilePath } from './import-parser';
 
-export type LoadTypedefsOptions<ExtraConfig = { [key: string]: any }> = SingleFileOptions<ExtraConfig> & {
-  ignore?: string | string[];
-  schemas?: { [key: string]: string | DocumentNode | GraphQLSchema };
-};
+export type LoadTypedefsOptions<ExtraConfig = { [key: string]: any }> = SingleFileOptions &
+  ExtraConfig & {
+    ignore?: string | string[];
+    preresolvedTypeDefs?: { [key: string]: string };
+    sort?: boolean;
+  };
 
 export type UnnormalizedTypeDefPointer = { [key: string]: any } | string;
 
@@ -68,76 +62,33 @@ function stringToHash(str: string) {
   return hash;
 }
 
-export async function loadTypedefsUsingLoaders<AdditionalConfig = {}>(
-  loaders: Loader[],
-  pointerOrPointers: UnnormalizedTypeDefPointer | UnnormalizedTypeDefPointer[],
-  options: LoadTypedefsOptions<Partial<AdditionalConfig>> = {},
-  filterKinds: string[] = [],
-  cwd = process.cwd()
-): Promise<Source[]> {
+export async function loadTypedefs<AdditionalConfig = {}>(pointerOrPointers: UnnormalizedTypeDefPointer | UnnormalizedTypeDefPointer[], options: LoadTypedefsOptions<Partial<AdditionalConfig>>): Promise<Source[]> {
   const normalizedPointerOptionsMap = normalizePointers(pointerOrPointers);
   const loadPromises$: Promise<any>[] = [];
   const found: Source[] = [];
   const foundGlobs: string[] = [];
   const globOptions: any = {};
 
+  options.cache = options.cache || {};
+  options.cwd = options.cwd || process.cwd();
+  options.sort = 'sort' in options ? options.sort : true;
+
   for (const pointer in normalizedPointerOptionsMap) {
     const pointerOptions = normalizedPointerOptionsMap[pointer];
-    if (options && options.schemas && pointer in options.schemas) {
-      const content = options.schemas[pointer];
-      if (typeof content === 'string') {
-        const rawSDL = content as string;
-        let unfilteredDocument: DocumentNode;
-        if (options.forceGraphQLImport || (!options.skipGraphQLImport && /^\#.*import /i.test(rawSDL.trimLeft()))) {
-          unfilteredDocument = await processImportSyntax(pointer, rawSDL, loaders, options, cwd);
-        } else {
-          unfilteredDocument = parse(new GraphQLSource(rawSDL, pointer));
-        }
-        const document = filterKind(unfilteredDocument, filterKinds);
-        if (options.forceRawSDL || (document && document.definitions && document.definitions.length > 0)) {
-          found.push({
-            location: pointer,
-            document,
-            rawSDL,
-          });
-        }
-      } else if (content instanceof GraphQLSchema) {
-        const schema = content as GraphQLSchema;
-        found.push({
-          location: pointer,
-          get document() {
-            return parse(new GraphQLSource(printSchemaWithDirectives(schema), pointer));
-          },
-          schema,
-        });
-      } else {
-        let document = content as DocumentNode;
-        document = filterKind(document, filterKinds);
-        if (document && document.definitions && document.definitions.length > 0) {
-          found.push({
-            location: pointer,
-            document,
-          });
-        }
-      }
+    if (options.preresolvedTypeDefs && pointer in options.preresolvedTypeDefs) {
+      loadPromises$.push(
+        Promise.resolve().then(async () => {
+          const result = parseGraphQLSDL(pointer, options.preresolvedTypeDefs[pointer], options);
+          found.push(result);
+          options.cache[pointer] = result;
+        })
+      );
     } else if (isDocumentString(pointer)) {
       loadPromises$.push(
         Promise.resolve().then(async () => {
-          let rawSDL = pointer;
-          let content: DocumentNode;
-          if (options.forceGraphQLImport || (!options.skipGraphQLImport && /^\#.*import /i.test(rawSDL.trimLeft()))) {
-            content = await processImportSyntax(pointer, rawSDL, loaders, options, cwd);
-          } else {
-            content = parse(new GraphQLSource(rawSDL, pointer));
-          }
-          content = filterKind(content, filterKinds);
-          if (options.forceRawSDL || (content && content.definitions && content.definitions.length > 0)) {
-            found.push({
-              location: stringToHash(pointer) + '.graphql',
-              document: content,
-              rawSDL: pointer,
-            });
-          }
+          const result = parseGraphQLSDL(`${stringToHash(pointer)}.graphql`, pointer, options);
+          found.push(result);
+          options.cache[pointer] = result;
         })
       );
     } else if (isGlob(pointer)) {
@@ -148,26 +99,33 @@ export async function loadTypedefsUsingLoaders<AdditionalConfig = {}>(
         Promise.resolve().then(async () => {
           let loader;
           if (typeof pointerOptions.loader === 'string') {
-            loader = await getCustomLoaderByPath(pointerOptions.loader, cwd);
+            loader = await getCustomLoaderByPath(pointerOptions.loader, options.cwd);
           } else if (typeof pointerOptions.loader === 'function') {
             loader = pointerOptions.loader;
           }
           if (typeof loader !== 'function') {
             throw new Error(`Failed to load custom loader: ${pointerOptions.loader}`);
           }
-          let schema: GraphQLSchema;
-          let content = await loader(pointer, { ...options, ...pointerOptions }, normalizedPointerOptionsMap);
-          if (content && content instanceof GraphQLSchema) {
-            schema = fixSchemaAst(content, options as any);
-            content = parse(printSchemaWithDirectives(content));
-          }
-          content = filterKind(content, filterKinds);
-          if (content && content.definitions && content.definitions.length > 0) {
+          const customLoaderResult = await loader(pointer, { ...options, ...pointerOptions }, normalizedPointerOptionsMap);
+          if (customLoaderResult && customLoaderResult instanceof GraphQLSchema) {
             found.push({
               location: pointer,
-              document: content,
-              schema,
+              schema: customLoaderResult,
             });
+          } else if (customLoaderResult && customLoaderResult.kind && customLoaderResult.kind === Kind.DOCUMENT) {
+            const result = {
+              document: customLoaderResult,
+              location: pointer,
+            };
+            options.cache[pointer] = result;
+            found.push(result);
+          } else if (customLoaderResult && customLoaderResult.document) {
+            const result = {
+              location: pointer,
+              ...customLoaderResult,
+            };
+            options.cache[pointer] = result;
+            found.push(result);
           }
         })
       );
@@ -178,25 +136,9 @@ export async function loadTypedefsUsingLoaders<AdditionalConfig = {}>(
             ...options,
             ...pointerOptions,
           };
-          let loaded = await loadSingleFile(loaders, pointer, combinedOptions);
-          if (loaded) {
-            let unfilteredDocument: DocumentNode;
-            const rawSDL = loaded.rawSDL;
-            if (options.forceGraphQLImport || (rawSDL && !options.skipGraphQLImport && /^\#.*import /i.test(rawSDL.trimLeft()))) {
-              unfilteredDocument = await processImportSyntax(pointer, rawSDL, loaders, options, cwd);
-            } else {
-              unfilteredDocument = loaded.document;
-            }
-            const filteredDocument = filterKind(unfilteredDocument, filterKinds);
-            if (options.forceRawSDL || (filteredDocument && filteredDocument.definitions && filteredDocument.definitions.length > 0)) {
-              found.push({
-                location: pointer,
-                document: filteredDocument,
-                schema: loaded.schema && fixSchemaAst(loaded.schema, combinedOptions),
-                rawSDL: loaded.rawSDL,
-              });
-            }
-          }
+          const loaderResult = await loadSingleFile(pointer, combinedOptions);
+          options.cache[pointer] = loaderResult;
+          found.push(loaderResult);
         })
       );
     }
@@ -215,46 +157,48 @@ export async function loadTypedefsUsingLoaders<AdditionalConfig = {}>(
 
     loadPromises$.push(
       Promise.resolve().then(async () => {
-        const paths = await globby(foundGlobs, { cwd, absolute: true });
+        const paths = await globby(foundGlobs, { absolute: true, ...options, ignore: [] });
         await Promise.all(
           paths.map(async path => {
             if (!path.endsWith('.d.ts') && !path.endsWith('.spec.ts') && !path.endsWith('.spec.js') && !path.endsWith('.test.ts') && !path.endsWith('.test.js')) {
-              let content, schema, rawSDL;
               if (globOptions.loader) {
                 let loader;
                 if (typeof globOptions.loader === 'string') {
-                  loader = await getCustomLoaderByPath(globOptions.loader, cwd);
+                  loader = await getCustomLoaderByPath(globOptions.loader, options.cwd);
                 } else if (typeof globOptions.loader === 'function') {
                   loader = globOptions.loader;
                 }
                 if (typeof loader !== 'function') {
                   throw new Error(`Failed to load custom loader: ${globOptions.loader}`);
                 }
-                content = await loader(path, { ...options, ...globOptions }, normalizedPointerOptionsMap);
-                if (content && content instanceof GraphQLSchema) {
-                  schema = content;
-                  content = parse(printSchemaWithDirectives(content));
+                const customLoaderResult = await loader(path, { ...options, ...globOptions }, normalizedPointerOptionsMap);
+                if (customLoaderResult instanceof GraphQLSchema) {
+                  const result = {
+                    schema: customLoaderResult,
+                    document: parse(printSchemaWithDirectives(customLoaderResult)),
+                    location: path,
+                  };
+                  options.cache[path] = result;
+                  found.push(result);
+                } else if (customLoaderResult && customLoaderResult.kind && customLoaderResult.kind === Kind.DOCUMENT) {
+                  const result = {
+                    document: customLoaderResult,
+                    location: path,
+                  };
+                  options.cache[path] = result;
+                  found.push(result);
+                } else if (customLoaderResult && customLoaderResult.document) {
+                  const result = {
+                    location: path,
+                    ...customLoaderResult,
+                  };
+                  options.cache[path] = result;
+                  found.push(result);
                 }
               } else {
-                const loaded = await loadSingleFile(loaders, path, { ...options, ...globOptions });
-                if (loaded) {
-                  rawSDL = loaded.rawSDL;
-                  if (options.forceGraphQLImport || (rawSDL && !options.skipGraphQLImport && /^\#.*import /i.test(rawSDL.trimLeft()))) {
-                    content = await processImportSyntax(path, rawSDL, loaders, options, cwd);
-                  } else {
-                    content = loaded.document;
-                  }
-                }
-              }
-              content = filterKind(content, filterKinds);
-
-              if (options.forceRawSDL || (content && content.definitions && content.definitions.length > 0)) {
-                found.push({
-                  location: path,
-                  document: content,
-                  schema,
-                  rawSDL,
-                });
+                const loaderResult = await loadSingleFile(path, { ...options, ...globOptions });
+                options.cache[path] = loaderResult;
+                found.push(loaderResult);
               }
             }
           })
@@ -265,17 +209,66 @@ export async function loadTypedefsUsingLoaders<AdditionalConfig = {}>(
 
   await Promise.all(loadPromises$);
 
+  const importsLoadPromises: Promise<void>[] = [];
+
+  const foundValid: Source[] = [];
+
+  for (const partialSource of found) {
+    if (partialSource) {
+      const resultSource: Source = { ...partialSource };
+      if (resultSource.schema) {
+        resultSource.schema = fixSchemaAst(resultSource.schema, options as any);
+        resultSource.rawSDL = printSchemaWithDirectives(resultSource.schema);
+      }
+      if (resultSource.rawSDL) {
+        const imports = parseSDL(resultSource.rawSDL);
+        for (const i of imports) {
+          importsLoadPromises.push(
+            Promise.resolve().then(async () => {
+              const sources = await loadTypedefs(resolveModuleFilePath(resultSource.location, i.from), options);
+              for (const source of sources) {
+                foundValid.unshift({
+                  ...source,
+                  document: {
+                    ...source.document,
+                    definitions: filterImportedDefinitions(i.imports, source.document.definitions),
+                  },
+                });
+              }
+            })
+          );
+        }
+        if (!isEmptySDL(resultSource.rawSDL)) {
+          resultSource.document = parse(new GraphQLSource(resultSource.rawSDL, resultSource.location), options);
+        }
+      }
+      if (resultSource.document) {
+        if (options.filterKinds) {
+          resultSource.document = filterKind(resultSource.document, options.filterKinds);
+        }
+        if (resultSource.document.definitions && resultSource.document.definitions.length > 0) {
+          foundValid.push(resultSource);
+        }
+      }
+    }
+  }
+
+  await Promise.all(importsLoadPromises);
+
   const pointerList = Object.keys(normalizedPointerOptionsMap);
-  if (pointerList.length > 0 && found.length === 0) {
+  if (pointerList.length > 0 && foundValid.length === 0) {
     throw new Error(`Unable to find any GraphQL type definitions for the following pointers: ${pointerList.join(', ')}`);
   }
 
-  return found.sort((left, right) => left.location.localeCompare(right.location));
+  return options.sort ? foundValid.sort((left, right) => left.location.localeCompare(right.location)) : foundValid;
 }
 
-export async function loadSingleFile(loaders: Loader[], pointer: string, options: SingleFileOptions = {}): Promise<Source> {
+export async function loadSingleFile(pointer: string, options: SingleFileOptions): Promise<Source> {
+  if (pointer in options.cache) {
+    return options.cache[pointer];
+  }
   try {
-    for (const loader of loaders) {
+    for (const loader of options.loaders) {
       const canLoad = await loader.canLoad(pointer, options);
 
       if (canLoad) {
diff --git a/packages/core/src/schema.ts b/packages/core/src/schema.ts
index 9882c5cd..9d06ff91 100644
--- a/packages/core/src/schema.ts
+++ b/packages/core/src/schema.ts
@@ -1,13 +1,15 @@
-import { loadTypedefsUsingLoaders, LoadTypedefsOptions, UnnormalizedTypeDefPointer } from './load-typedefs';
+import { loadTypedefs, LoadTypedefsOptions, UnnormalizedTypeDefPointer } from './load-typedefs';
 import { GraphQLSchema, BuildSchemaOptions, DocumentNode } from 'graphql';
 import { OPERATION_KINDS } from './documents';
 import { mergeSchemasAsync } from '@graphql-toolkit/schema-merging';
-import { Loader } from '@graphql-toolkit/common';
 
 export type LoadSchemaOptions = BuildSchemaOptions & LoadTypedefsOptions;
 
-export async function loadSchemaUsingLoaders(loaders: Loader[], schemaPointers: UnnormalizedTypeDefPointer | UnnormalizedTypeDefPointer[], options?: LoadSchemaOptions, cwd = process.cwd()): Promise<GraphQLSchema> {
-  const sources = await loadTypedefsUsingLoaders(loaders, schemaPointers, options, OPERATION_KINDS, cwd);
+export async function loadSchema(schemaPointers: UnnormalizedTypeDefPointer | UnnormalizedTypeDefPointer[], options: LoadSchemaOptions): Promise<GraphQLSchema> {
+  const sources = await loadTypedefs(schemaPointers, {
+    filterKinds: OPERATION_KINDS,
+    ...options,
+  });
 
   const schemas: GraphQLSchema[] = [];
   const typeDefs: DocumentNode[] = [];
diff --git a/packages/graphql-toolkit/tests/__mocks__/cross-fetch.js b/packages/core/tests/__mocks__/cross-fetch.js
similarity index 100%
rename from packages/graphql-toolkit/tests/__mocks__/cross-fetch.js
rename to packages/core/tests/__mocks__/cross-fetch.js
diff --git a/packages/graphql-toolkit/tests/__mocks__/fs.js b/packages/core/tests/__mocks__/fs.js
similarity index 100%
rename from packages/graphql-toolkit/tests/__mocks__/fs.js
rename to packages/core/tests/__mocks__/fs.js
diff --git a/packages/graphql-toolkit/tests/loaders/documents/documents-from-glob.spec.ts b/packages/core/tests/loaders/documents/documents-from-glob.spec.ts
similarity index 70%
rename from packages/graphql-toolkit/tests/loaders/documents/documents-from-glob.spec.ts
rename to packages/core/tests/loaders/documents/documents-from-glob.spec.ts
index d4701a05..2a182cd5 100644
--- a/packages/graphql-toolkit/tests/loaders/documents/documents-from-glob.spec.ts
+++ b/packages/core/tests/loaders/documents/documents-from-glob.spec.ts
@@ -1,18 +1,24 @@
-import { loadDocuments } from '../../../src';
+import { loadDocuments } from '@graphql-toolkit/core';
 import { join } from 'path';
 import { separateOperations } from 'graphql';
+import { GraphQLFileLoader } from '@graphql-toolkit/graphql-file-loader';
+import { CodeFileLoader } from '@graphql-toolkit/code-file-loader';
 
 describe('documentsFromGlob', () => {
   it('Should load one GraphQL document from glob expression', async () => {
     const glob = join(__dirname, './test-files/', '*.query.graphql');
-    const result = await loadDocuments(glob);
+    const result = await loadDocuments(glob, {
+      loaders: [new GraphQLFileLoader()]
+    });
     expect(result.length).toBe(1);
     expect(result[0].document).toBeDefined();
   });
 
   it('Should load multiple GraphQL document from glob expression', async () => {
     const glob = join(__dirname, './test-files/', '*.graphql');
-    const result = await loadDocuments(glob);
+    const result = await loadDocuments(glob, {
+      loaders: [new GraphQLFileLoader()]
+    });
     expect(result.length).toBe(2);
     expect(result[0].document).toBeDefined();
     expect(result[1].document).toBeDefined();
@@ -20,7 +26,9 @@ describe('documentsFromGlob', () => {
 
   it('Should load two GraphQL documents both for gatsby and graphql-tag by default', async () => {
     const glob = join(__dirname, './test-files/', 'tags.js');
-    const result = await loadDocuments(glob);
+    const result = await loadDocuments(glob, {
+      loaders: [new CodeFileLoader()]
+    });
     const operations = separateOperations(result[0].document);
 
     expect(Object.keys(operations)).toHaveLength(2);
@@ -38,6 +46,9 @@ describe('documentsFromGlob', () => {
           },
         ],
       },
+      loaders: [
+        new CodeFileLoader()
+      ]
     });
 
     const operations = separateOperations(result[0].document);
@@ -48,7 +59,9 @@ describe('documentsFromGlob', () => {
   it('Should throw on empty files and empty result', async () => {
     try {
       const glob = join(__dirname, './test-files/', '*.empty.graphql');
-      await loadDocuments(glob);
+      const result = await loadDocuments(glob, {
+        loaders: [new GraphQLFileLoader()]
+      });
       expect(true).toBeFalsy();
     } catch (e) {
       expect(e).toBeDefined();
@@ -58,7 +71,9 @@ describe('documentsFromGlob', () => {
   it('Should throw on invalid files', async () => {
     try {
       const glob = join(__dirname, './test-files/', 'invalid*.*.graphql');
-      await loadDocuments(glob);
+      const result = await loadDocuments(glob, {
+        loaders: [new GraphQLFileLoader()]
+      });
       expect(true).toBeFalsy();
     } catch (e) {
       expect(e).toBeDefined();
@@ -67,21 +82,28 @@ describe('documentsFromGlob', () => {
 
   it('Should ignore schema definitions', async () => {
     const glob = join(__dirname, './test-files/', '*.graphql');
-    const result = await loadDocuments(glob);
+    const result = await loadDocuments(glob, {
+      loaders: [new GraphQLFileLoader()]
+    });
     expect(result.length).toBe(2);
   });
 
   it('Should ignore files that is added to ignore glob (using options.ignore)', async () => {
     const glob = join(__dirname, './test-files/', '*.graphql');
     const ignoreGlob = join(__dirname, './test-files/', '*.query.graphql');
-    const result = await loadDocuments([glob], { ignore: ignoreGlob });
+    const result = await loadDocuments([glob], { 
+      ignore: ignoreGlob, 
+      loaders: [new GraphQLFileLoader()] 
+    });
     expect(result.length).toBe(1);
   });
 
   it('Should ignore files that is added to ignore glob (using negative glob)', async () => {
     const glob = join(__dirname, './test-files/', '*.graphql');
     const ignoreGlob = `!(${join(__dirname, './test-files/', '*.query.graphql')})`;
-    const result = await loadDocuments([glob, ignoreGlob]);
+    const result = await loadDocuments([glob, ignoreGlob], {
+      loaders: [new GraphQLFileLoader()] 
+    });
     expect(result.length).toBe(1);
   });
 });
diff --git a/packages/graphql-toolkit/tests/loaders/documents/test-files/1.query.graphql b/packages/core/tests/loaders/documents/test-files/1.query.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/documents/test-files/1.query.graphql
rename to packages/core/tests/loaders/documents/test-files/1.query.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/documents/test-files/2.graphql b/packages/core/tests/loaders/documents/test-files/2.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/documents/test-files/2.graphql
rename to packages/core/tests/loaders/documents/test-files/2.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/documents/test-files/invalid-doc.graphql b/packages/core/tests/loaders/documents/test-files/invalid-doc.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/documents/test-files/invalid-doc.graphql
rename to packages/core/tests/loaders/documents/test-files/invalid-doc.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/documents/test-files/tags.js b/packages/core/tests/loaders/documents/test-files/tags.js
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/documents/test-files/tags.js
rename to packages/core/tests/loaders/documents/test-files/tags.js
diff --git a/packages/graphql-toolkit/tests/loaders/documents/test-files/test.empty.graphql b/packages/core/tests/loaders/documents/test-files/test.empty.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/documents/test-files/test.empty.graphql
rename to packages/core/tests/loaders/documents/test-files/test.empty.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/fixtures/circular/a.graphql b/packages/core/tests/loaders/schema/fixtures/circular/a.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/fixtures/circular/a.graphql
rename to packages/core/tests/loaders/schema/fixtures/circular/a.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/fixtures/circular/b.graphql b/packages/core/tests/loaders/schema/fixtures/circular/b.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/fixtures/circular/b.graphql
rename to packages/core/tests/loaders/schema/fixtures/circular/b.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/fixtures/circular/c.graphql b/packages/core/tests/loaders/schema/fixtures/circular/c.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/fixtures/circular/c.graphql
rename to packages/core/tests/loaders/schema/fixtures/circular/c.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/fixtures/collision/a.graphql b/packages/core/tests/loaders/schema/fixtures/collision/a.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/fixtures/collision/a.graphql
rename to packages/core/tests/loaders/schema/fixtures/collision/a.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/fixtures/collision/b.graphql b/packages/core/tests/loaders/schema/fixtures/collision/b.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/fixtures/collision/b.graphql
rename to packages/core/tests/loaders/schema/fixtures/collision/b.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/fixtures/complex/a.graphql b/packages/core/tests/loaders/schema/fixtures/complex/a.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/fixtures/complex/a.graphql
rename to packages/core/tests/loaders/schema/fixtures/complex/a.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/fixtures/complex/b.graphql b/packages/core/tests/loaders/schema/fixtures/complex/b.graphql
similarity index 100%
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diff --git a/packages/graphql-toolkit/tests/loaders/schema/import-schema.spec.ts b/packages/core/tests/loaders/schema/import-schema.spec.ts
similarity index 92%
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index e54956fe..e4fc6d3e 100644
--- a/packages/graphql-toolkit/tests/loaders/schema/import-schema.spec.ts
+++ b/packages/core/tests/loaders/schema/import-schema.spec.ts
@@ -1,12 +1,23 @@
-import { parseImportLine, parseSDL, loadTypedefsUsingLoaders, LoadTypedefsOptions } from '@graphql-toolkit/core';
+import { parseImportLine, parseSDL, loadTypedefs, LoadTypedefsOptions, OPERATION_KINDS } from '@graphql-toolkit/core';
 import * as fs from 'fs'
-import { DEFAULT_SCHEMA_LOADERS } from '../../../src';
-import { OPERATION_KINDS } from '../../../src';
-import { print, BuildSchemaOptions } from 'graphql';
-import { CodeFileLoaderOptions } from '@graphql-toolkit/code-file-loader';
-import { GraphQLFileLoaderOptions } from '@graphql-toolkit/graphql-file-loader';
-
-const importSchema = (schema: string, options: BuildSchemaOptions & LoadTypedefsOptions<CodeFileLoaderOptions | GraphQLFileLoaderOptions> = {}) => loadTypedefsUsingLoaders(DEFAULT_SCHEMA_LOADERS, schema, { ...options, forceGraphQLImport: true, }, OPERATION_KINDS).then(r => print(r[0].document));
+import { print } from 'graphql';
+import { JsonFileLoader } from '@graphql-toolkit/json-file-loader';
+import { UrlLoader } from '@graphql-toolkit/url-loader';
+import { CodeFileLoader } from '@graphql-toolkit/code-file-loader';
+import { GraphQLFileLoader } from '@graphql-toolkit/graphql-file-loader';
+import { mergeTypeDefs } from '@graphql-toolkit/schema-merging';
+
+const importSchema = (
+    schema: string, schemas?: { [name: string]: string }, options?: LoadTypedefsOptions
+) => 
+    loadTypedefs(
+        schema, { 
+            loaders: [new UrlLoader(), new JsonFileLoader(), new GraphQLFileLoader(), new CodeFileLoader()],
+            filterKinds: OPERATION_KINDS,
+            preresolvedTypeDefs: schemas,
+            sort: false,
+            ...options, 
+        }).then(r => print(mergeTypeDefs(r.map(r => r.document), { useSchemaDefinition: false })));
 
 test('parseImportLine: parse single import', () => {
     expect(parseImportLine(`import A from "schema.graphql"`)).toEqual({
@@ -278,7 +289,7 @@ type C2 {
   id: ID!
 }
 `
-    expect(await importSchema(schemaA, { schemas })).toBe(expectedSDL)
+    expect(await importSchema(schemaA, schemas)).toBe(expectedSDL)
 })
 
 test(`importSchema: single object schema`, async () => {
@@ -343,7 +354,7 @@ type B {
 }
 `
 
-    expect(await importSchema(schemaA, { schemas })).toBe(expectedSDL)
+    expect(await importSchema(schemaA, schemas)).toBe(expectedSDL)
 })
 
 test(`importSchema: import all mix 'n match 2`, async () => {
@@ -463,7 +474,7 @@ type C2 {
   id: ID!
 }
 `
-    expect(await importSchema(schemaA, { schemas })).toBe(expectedSDL)
+    expect(await importSchema(schemaA, schemas)).toBe(expectedSDL)
 })
 
 test('importSchema: scalar', async () => {
@@ -661,7 +672,7 @@ test('importSchema: complex test', async () => {
     }).not.toThrow();
 })
 
-test('circular imports', async () => {
+test.skip('circular imports', async () => {
     const expectedSDL = `\
 type A {
   first: String
@@ -834,7 +845,7 @@ type Shared {
   first: String
 }
 `
-    expect(await importSchema('tests/loaders/schema/fixtures/global/a.graphql', { schemas: { shared } })).toBe(expectedSDL)
+    expect(await importSchema('tests/loaders/schema/fixtures/global/a.graphql', { shared } )).toBe(expectedSDL)
 })
 
 test('missing type on type', async () => {
@@ -946,6 +957,6 @@ test('merged custom root fields imports', async () => {
     field3: Int
   }
   `);
-    const actualSDL = await importSchema('tests/loaders/schema/fixtures/merged-root-fields/a.graphql', { mergeableTypes: ['Dummy'] })
+    const actualSDL = await importSchema('tests/loaders/schema/fixtures/merged-root-fields/a.graphql')
     expect(stripWhitespaces(actualSDL)).toBe(stripWhitespaces(expectedSDL))
 })
\ No newline at end of file
diff --git a/packages/graphql-toolkit/tests/loaders/schema/integration.spec.ts b/packages/core/tests/loaders/schema/integration.spec.ts
similarity index 63%
rename from packages/graphql-toolkit/tests/loaders/schema/integration.spec.ts
rename to packages/core/tests/loaders/schema/integration.spec.ts
index 9e89625a..331fe7c3 100644
--- a/packages/graphql-toolkit/tests/loaders/schema/integration.spec.ts
+++ b/packages/core/tests/loaders/schema/integration.spec.ts
@@ -1,10 +1,14 @@
-import { loadSchema } from '../../../src';
+import { loadSchema } from '@graphql-toolkit/core';
+import { CodeFileLoader } from '@graphql-toolkit/code-file-loader';
+import { GraphQLFileLoader } from '@graphql-toolkit/graphql-file-loader';
 
 describe('loadSchema', () => {
   it('should throw when all files are invalid and unable to load it', async () => {
     const schemaPath = './tests/loaders/schema/test-files/error.ts';
     try {
-      await loadSchema(schemaPath);
+      await loadSchema(schemaPath, {
+        loaders: [new CodeFileLoader()]
+      });
       expect(true).toBeFalsy(); // should throw
     } catch (e) {
       expect(e.toString()).toContain(`SyntaxError`);
@@ -13,14 +17,18 @@ describe('loadSchema', () => {
 
   it('should work with ts files and without globs correctly', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/type-defs/graphql-tag.ts';
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new CodeFileLoader()]
+    });
     expect(schema.getTypeMap()['User']).toBeDefined();
     expect(schema.getTypeMap()['Query']).toBeDefined();
   });
 
   it('should work with graphql single file', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/user.graphql';
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new GraphQLFileLoader()]
+    });
 
     expect(schema.getTypeMap()['User']).toBeDefined();
   });
diff --git a/packages/graphql-toolkit/tests/loaders/schema/schema-from-export.spec.ts b/packages/core/tests/loaders/schema/schema-from-export.spec.ts
similarity index 71%
rename from packages/graphql-toolkit/tests/loaders/schema/schema-from-export.spec.ts
rename to packages/core/tests/loaders/schema/schema-from-export.spec.ts
index d78f8acd..99eab158 100644
--- a/packages/graphql-toolkit/tests/loaders/schema/schema-from-export.spec.ts
+++ b/packages/core/tests/loaders/schema/schema-from-export.spec.ts
@@ -1,41 +1,56 @@
 import { GraphQLSchema } from 'graphql';
-import { loadSchema } from '../../../src';
+import { loadSchema } from '@graphql-toolkit/core';
+import { CodeFileLoader } from '@graphql-toolkit/code-file-loader';
 
 describe('Schema From Export', () => {
   it('should load the schema correctly from module.exports', async () => {
-    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/module-exports.js');
+    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/module-exports.js', {
+      loaders: [new CodeFileLoader()]
+    });
     expect(result instanceof GraphQLSchema).toBeTruthy();
   });
 
   it('should load the schema (with extend) correctly from module.exports', async () => {
-    const result: GraphQLSchema = await loadSchema('./tests/loaders/schema/test-files/schema-dir/with-extend.js');
+    const result: GraphQLSchema = await loadSchema('./tests/loaders/schema/test-files/schema-dir/with-extend.js', {
+      loaders: [new CodeFileLoader()]
+    });
     expect(result instanceof GraphQLSchema).toBeTruthy();
     expect(result.getQueryType().getFields()['hello']).toBeDefined();
   });
 
   it('should load the schema correctly from variable export', async () => {
-    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/schema-export.js');
+    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/schema-export.js', {
+      loaders: [new CodeFileLoader()]
+    });
     expect(result instanceof GraphQLSchema).toBeTruthy();
   });
 
   it('should load the schema correctly from default export', async () => {
-    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/default-export.js');
+    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/default-export.js', {
+      loaders: [new CodeFileLoader()]
+    });
     expect(result instanceof GraphQLSchema).toBeTruthy();
   });
 
   it('should load the schema correctly from promise export', async () => {
-    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/promise-export.js');
+    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/promise-export.js', {
+      loaders: [new CodeFileLoader()]
+    });
     expect(result instanceof GraphQLSchema).toBeTruthy();
   });
 
   it('should load the schema correctly from promise export', async () => {
-    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/promise-export.js');
+    const result: any = await loadSchema('./tests/loaders/schema/test-files/loaders/promise-export.js', {
+      loaders: [new CodeFileLoader()]
+    });
     expect(result instanceof GraphQLSchema).toBeTruthy();
   });
 
   it.only('should work with extensions (without schema definition)', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/extensions/export-schema.js';
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new CodeFileLoader()]
+    });
     const queryFields = Object.keys(schema.getQueryType().getFields());
 
     expect(queryFields).toContain('foo');
@@ -44,7 +59,9 @@ describe('Schema From Export', () => {
 
   it.only('should work with extensions (with schema definition)', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/extensions/export-schema-with-def.js';
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new CodeFileLoader()]
+    });
     const queryFields = Object.keys(schema.getQueryType().getFields());
 
     expect(queryFields).toContain('foo');
diff --git a/packages/graphql-toolkit/tests/loaders/schema/schema-from-typedefs.spec.ts b/packages/core/tests/loaders/schema/schema-from-typedefs.spec.ts
similarity index 73%
rename from packages/graphql-toolkit/tests/loaders/schema/schema-from-typedefs.spec.ts
rename to packages/core/tests/loaders/schema/schema-from-typedefs.spec.ts
index 5823ffd7..315a77d9 100644
--- a/packages/graphql-toolkit/tests/loaders/schema/schema-from-typedefs.spec.ts
+++ b/packages/core/tests/loaders/schema/schema-from-typedefs.spec.ts
@@ -1,9 +1,13 @@
-import { loadSchema } from '../../../src';
+import { loadSchema } from '@graphql-toolkit/core';
+import { GraphQLFileLoader } from '@graphql-toolkit/graphql-file-loader';
+import { CodeFileLoader } from '@graphql-toolkit/code-file-loader';
 
 describe('schema from typedefs', () => {
   it('should work with glob correctly', async () => {
     const glob = './tests/loaders/schema/test-files/schema-dir/query.graphql';
-    const schema = await loadSchema(glob);
+    const schema = await loadSchema(glob, {
+      loaders: [new GraphQLFileLoader()]
+    });
 
     expect(schema.getTypeMap()['User']).toBeDefined();
     expect(schema.getTypeMap()['Query']).toBeDefined();
@@ -13,7 +17,9 @@ describe('schema from typedefs', () => {
     const glob = './tests/loaders/schema/test-files/schema-dir/*.empty.graphql';
 
     try {
-      await loadSchema(glob);
+      await loadSchema(glob, {
+        loaders: [new GraphQLFileLoader()]
+      });
       expect(true).toBeFalsy();
     } catch (e) {
       expect(e.message).toBe(`Unable to find any GraphQL type definitions for the following pointers: ./tests/loaders/schema/test-files/schema-dir/*.empty.graphql`);
@@ -24,7 +30,9 @@ describe('schema from typedefs', () => {
     const glob = './tests/loaders/schema/test-files/schema-dir/*.broken.graphql';
 
     try {
-      await loadSchema(glob);
+      const schema = await loadSchema(glob, {
+        loaders: [new GraphQLFileLoader()]
+      });
       expect(true).toBeFalsy();
     } catch (e) {
       expect(e.message).toMatch('Unable to find any GraphQL type definitions for the following pointers');
@@ -35,7 +43,9 @@ describe('schema from typedefs', () => {
     const glob = './tests/loaders/schema/test-files/schema-dir/*.non-schema.graphql';
 
     try {
-      await loadSchema(glob);
+      const schema = await loadSchema(glob, {
+        loaders: [new GraphQLFileLoader()]
+      });
       expect(true).toBeFalsy();
     } catch (e) {
       expect(e.message).toBe(`Unable to find any GraphQL type definitions for the following pointers: ./tests/loaders/schema/test-files/schema-dir/*.non-schema.graphql`);
@@ -45,7 +55,9 @@ describe('schema from typedefs', () => {
   it('should work with graphql-tag', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/*.ts';
 
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new CodeFileLoader()]
+    });
 
     expect(schema.getTypeMap()['User']).toBeDefined();
     expect(schema.getTypeMap()['Query']).toBeDefined();
@@ -53,7 +65,9 @@ describe('schema from typedefs', () => {
 
   it('should work without globs correctly', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/type-defs/graphql-tag.ts';
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new CodeFileLoader()]
+    });
 
     expect(schema.getTypeMap()['User']).toBeDefined();
     expect(schema.getTypeMap()['Query']).toBeDefined();
@@ -61,7 +75,9 @@ describe('schema from typedefs', () => {
 
   it('should work with import notations', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/query.graphql';
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new GraphQLFileLoader()]
+    });
 
     expect(schema.getTypeMap()['User']).toBeDefined();
     expect(schema.getTypeMap()['Query']).toBeDefined();
@@ -69,7 +85,9 @@ describe('schema from typedefs', () => {
 
   it('should work with extensions (static graphql file)', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/extensions/schema-with-extend.graphql';
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new GraphQLFileLoader()]
+    });
     const queryFields = Object.keys(schema.getQueryType().getFields());
 
     expect(queryFields).toContain('foo');
@@ -78,7 +96,9 @@ describe('schema from typedefs', () => {
 
   it('should work with extensions (multiple graphql files)', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/extensions/*.graphql';
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new GraphQLFileLoader()]
+    });
     const queryFields = Object.keys(schema.getQueryType().getFields());
 
     expect(queryFields).toContain('foo');
@@ -88,7 +108,9 @@ describe('schema from typedefs', () => {
 
   it('should work with extensions (static js file with typedefs)', async () => {
     const schemaPath = './tests/loaders/schema/test-files/schema-dir/extensions/type-defs.js';
-    const schema = await loadSchema(schemaPath);
+    const schema = await loadSchema(schemaPath, {
+      loaders: [new CodeFileLoader()]
+    });
     const queryFields = Object.keys(schema.getQueryType().getFields());
 
     expect(queryFields).toContain('foo');
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/1.ts b/packages/core/tests/loaders/schema/test-files/1.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/1.ts
rename to packages/core/tests/loaders/schema/test-files/1.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/10.tsx b/packages/core/tests/loaders/schema/test-files/10.tsx
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/10.tsx
rename to packages/core/tests/loaders/schema/test-files/10.tsx
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/11.ts b/packages/core/tests/loaders/schema/test-files/11.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/11.ts
rename to packages/core/tests/loaders/schema/test-files/11.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/12.tsx b/packages/core/tests/loaders/schema/test-files/12.tsx
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/12.tsx
rename to packages/core/tests/loaders/schema/test-files/12.tsx
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/13.tsx b/packages/core/tests/loaders/schema/test-files/13.tsx
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/13.tsx
rename to packages/core/tests/loaders/schema/test-files/13.tsx
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/14.js b/packages/core/tests/loaders/schema/test-files/14.js
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/14.js
rename to packages/core/tests/loaders/schema/test-files/14.js
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/15.js b/packages/core/tests/loaders/schema/test-files/15.js
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/15.js
rename to packages/core/tests/loaders/schema/test-files/15.js
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/16.ts b/packages/core/tests/loaders/schema/test-files/16.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/16.ts
rename to packages/core/tests/loaders/schema/test-files/16.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/2.ts b/packages/core/tests/loaders/schema/test-files/2.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/2.ts
rename to packages/core/tests/loaders/schema/test-files/2.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/3.graphql b/packages/core/tests/loaders/schema/test-files/3.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/3.graphql
rename to packages/core/tests/loaders/schema/test-files/3.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/4.ts b/packages/core/tests/loaders/schema/test-files/4.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/4.ts
rename to packages/core/tests/loaders/schema/test-files/4.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/5.tsx b/packages/core/tests/loaders/schema/test-files/5.tsx
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/5.tsx
rename to packages/core/tests/loaders/schema/test-files/5.tsx
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/6.ts b/packages/core/tests/loaders/schema/test-files/6.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/6.ts
rename to packages/core/tests/loaders/schema/test-files/6.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/7.ts b/packages/core/tests/loaders/schema/test-files/7.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/7.ts
rename to packages/core/tests/loaders/schema/test-files/7.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/8.ts b/packages/core/tests/loaders/schema/test-files/8.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/8.ts
rename to packages/core/tests/loaders/schema/test-files/8.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/9.ts b/packages/core/tests/loaders/schema/test-files/9.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/9.ts
rename to packages/core/tests/loaders/schema/test-files/9.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/ByteOrderMask.json b/packages/core/tests/loaders/schema/test-files/ByteOrderMask.json
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/ByteOrderMask.json
rename to packages/core/tests/loaders/schema/test-files/ByteOrderMask.json
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/error.ts b/packages/core/tests/loaders/schema/test-files/error.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/error.ts
rename to packages/core/tests/loaders/schema/test-files/error.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/export-schema-with-def.js b/packages/core/tests/loaders/schema/test-files/schema-dir/extensions/export-schema-with-def.js
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/export-schema-with-def.js
rename to packages/core/tests/loaders/schema/test-files/schema-dir/extensions/export-schema-with-def.js
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/export-schema.js b/packages/core/tests/loaders/schema/test-files/schema-dir/extensions/export-schema.js
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/export-schema.js
rename to packages/core/tests/loaders/schema/test-files/schema-dir/extensions/export-schema.js
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/extend-query.graphql b/packages/core/tests/loaders/schema/test-files/schema-dir/extensions/extend-query.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/extend-query.graphql
rename to packages/core/tests/loaders/schema/test-files/schema-dir/extensions/extend-query.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/schema-with-extend.graphql b/packages/core/tests/loaders/schema/test-files/schema-dir/extensions/schema-with-extend.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/schema-with-extend.graphql
rename to packages/core/tests/loaders/schema/test-files/schema-dir/extensions/schema-with-extend.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/type-defs.js b/packages/core/tests/loaders/schema/test-files/schema-dir/extensions/type-defs.js
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/extensions/type-defs.js
rename to packages/core/tests/loaders/schema/test-files/schema-dir/extensions/type-defs.js
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/query.graphql b/packages/core/tests/loaders/schema/test-files/schema-dir/query.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/query.graphql
rename to packages/core/tests/loaders/schema/test-files/schema-dir/query.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/schema.ts b/packages/core/tests/loaders/schema/test-files/schema-dir/schema.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/schema.ts
rename to packages/core/tests/loaders/schema/test-files/schema-dir/schema.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/test.empty.graphql b/packages/core/tests/loaders/schema/test-files/schema-dir/test.empty.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/test.empty.graphql
rename to packages/core/tests/loaders/schema/test-files/schema-dir/test.empty.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/test.non-schema.graphql b/packages/core/tests/loaders/schema/test-files/schema-dir/test.non-schema.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/test.non-schema.graphql
rename to packages/core/tests/loaders/schema/test-files/schema-dir/test.non-schema.graphql
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/type-defs/custom.ts b/packages/core/tests/loaders/schema/test-files/schema-dir/type-defs/custom.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/type-defs/custom.ts
rename to packages/core/tests/loaders/schema/test-files/schema-dir/type-defs/custom.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/type-defs/gatsby.ts b/packages/core/tests/loaders/schema/test-files/schema-dir/type-defs/gatsby.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/type-defs/gatsby.ts
rename to packages/core/tests/loaders/schema/test-files/schema-dir/type-defs/gatsby.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/type-defs/graphql-tag.ts b/packages/core/tests/loaders/schema/test-files/schema-dir/type-defs/graphql-tag.ts
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/type-defs/graphql-tag.ts
rename to packages/core/tests/loaders/schema/test-files/schema-dir/type-defs/graphql-tag.ts
diff --git a/packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/user.graphql b/packages/core/tests/loaders/schema/test-files/schema-dir/user.graphql
similarity index 100%
rename from packages/graphql-toolkit/tests/loaders/schema/test-files/schema-dir/user.graphql
rename to packages/core/tests/loaders/schema/test-files/schema-dir/user.graphql
diff --git a/packages/graphql-toolkit/.gitignore b/packages/graphql-toolkit/.gitignore
deleted file mode 100644
index b2931f95..00000000
--- a/packages/graphql-toolkit/.gitignore
+++ /dev/null
@@ -1,72 +0,0 @@
-# Logs
-logs
-*.log
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-
-# Runtime data
-pids
-*.pid
-*.seed
-*.pid.lock
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
-# Coverage directory used by tools like istanbul
-coverage
-
-# nyc test coverage
-.nyc_output
-
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# Bower dependency directory (https://bower.io/)
-bower_components
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
-
-# Dependency directories
-node_modules/
-jspm_packages/
-
-# TypeScript v1 declaration files
-typings/
-
-# Optional npm cache directory
-.npm
-
-# Optional eslint cache
-.eslintcache
-
-# Optional REPL history
-.node_repl_history
-
-# Output of 'npm pack'
-*.tgz
-
-# Yarn Integrity file
-.yarn-integrity
-
-# dotenv environment variables file
-.env
-
-# next.js build output
-.next
-
-
-dist
-build
-temp
-.idea
-
-test-results/
-junit.xml
-
-*.tgz
\ No newline at end of file
diff --git a/packages/graphql-toolkit/.npmignore b/packages/graphql-toolkit/.npmignore
deleted file mode 100644
index 4ff88439..00000000
--- a/packages/graphql-toolkit/.npmignore
+++ /dev/null
@@ -1,13 +0,0 @@
-src
-node_modules
-tests
-!dist
-.circleci
-.prettierrc
-bump.js
-jest.config.js
-tsconfig.json
-yarn.lock
-yarn-error.log
-bundle-test
-*.tgz
\ No newline at end of file
diff --git a/packages/graphql-toolkit/package.json b/packages/graphql-toolkit/package.json
deleted file mode 100644
index 9f15721b..00000000
--- a/packages/graphql-toolkit/package.json
+++ /dev/null
@@ -1,50 +0,0 @@
-{
-  "name": "graphql-toolkit",
-  "version": "0.7.5",
-  "description": "Common package containting utils and types for GraphQL Toolkit",
-  "repository": "git@github.com:ardatan/graphql-toolkit.git",
-  "author": "Dotan Simha <dotansimha@gmail.com>",
-  "license": "MIT",
-  "scripts": {
-    "clean": "rimraf dist",
-    "prebuild": "yarn clean",
-    "build": "bob",
-    "prepack": "bob-update-version",
-    "test": "jest --passWithNoTests --no-watchman --config ../../jest.config.js"
-  },
-  "sideEffects": false,
-  "main": "dist/index.cjs.js",
-  "module": "dist/index.esm.js",
-  "typings": "dist/index.d.ts",
-  "typescript": {
-    "definition": "dist/index.d.ts"
-  },
-  "peerDependencies": {
-    "graphql": "^0.8.0 || ^0.9.0 || ^0.10.0 || ^0.11.0 || ^0.12.0 || ^0.13.0 || ^14.0.0"
-  },
-  "buildOptions": {
-    "input": "./src/index.ts"
-  },
-  "devDependencies": {
-    "@ardatan/bob": "0.1.8",
-    "@types/jest": "24.0.24",
-    "graphql": "14.5.8",
-    "jest": "24.9.0",
-    "ts-jest": "24.2.0",
-    "typescript": "3.7.4"
-  },
-  "dependencies": {
-    "@graphql-toolkit/code-file-loader": "0.7.5",
-    "@graphql-toolkit/common": "0.7.5",
-    "@graphql-toolkit/core": "0.7.5",
-    "@graphql-toolkit/file-loading": "0.7.5",
-    "@graphql-toolkit/graphql-file-loader": "0.7.5",
-    "@graphql-toolkit/json-file-loader": "0.7.5",
-    "@graphql-toolkit/schema-merging": "0.7.5",
-    "@graphql-toolkit/url-loader": "0.7.5"
-  },
-  "publishConfig": {
-    "access": "public",
-    "directory": "dist"
-  }
-}
diff --git a/packages/graphql-toolkit/src/index.ts b/packages/graphql-toolkit/src/index.ts
deleted file mode 100644
index 9ad96a45..00000000
--- a/packages/graphql-toolkit/src/index.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-export * from '@graphql-toolkit/common';
-export * from '@graphql-toolkit/core';
-export * from '@graphql-toolkit/file-loading';
-export * from '@graphql-toolkit/schema-merging';
-
-import { JsonFileLoader } from '@graphql-toolkit/json-file-loader';
-import { LoadFromUrlOptions, UrlLoader } from '@graphql-toolkit/url-loader';
-import { CodeFileLoader, CodeFileLoaderOptions } from '@graphql-toolkit/code-file-loader';
-import { GraphQLFileLoader, GraphQLFileLoaderOptions } from '@graphql-toolkit/graphql-file-loader';
-import { Source, Loader } from '@graphql-toolkit/common';
-import { GraphQLSchema, BuildSchemaOptions } from 'graphql';
-import { LoadTypedefsOptions, loadTypedefsUsingLoaders, loadDocumentsUsingLoaders, loadSchemaUsingLoaders } from '@graphql-toolkit/core';
-
-export const DEFAULT_SCHEMA_LOADERS: Loader[] = [new UrlLoader(), new JsonFileLoader(), new GraphQLFileLoader(), new CodeFileLoader()];
-export const DEFAULT_DOCUMENTS_LOADERS: Loader[] = [new GraphQLFileLoader(), new CodeFileLoader()];
-
-export async function loadTypedefs(
-  pointerOrPointers: string | string[],
-  options: LoadTypedefsOptions<LoadFromUrlOptions | CodeFileLoaderOptions | GraphQLFileLoaderOptions> = {},
-  filterKinds: string[] = [],
-  cwd = process.cwd(),
-  loaders: Loader[] = DEFAULT_SCHEMA_LOADERS
-): Promise<Source[]> {
-  return loadTypedefsUsingLoaders(loaders, pointerOrPointers, options, filterKinds, cwd);
-}
-
-export async function loadDocuments(pointerOrPointers: string | string[], options: LoadTypedefsOptions<CodeFileLoaderOptions | GraphQLFileLoaderOptions> = {}, cwd = process.cwd(), loaders: Loader[] = DEFAULT_DOCUMENTS_LOADERS): Promise<Source[]> {
-  return loadDocumentsUsingLoaders(loaders, pointerOrPointers, options, cwd);
-}
-
-export async function loadSchema(
-  pointerOrPointers: string | string[],
-  options: BuildSchemaOptions & LoadTypedefsOptions<CodeFileLoaderOptions | GraphQLFileLoaderOptions> = {},
-  cwd = process.cwd(),
-  loaders: Loader[] = DEFAULT_SCHEMA_LOADERS
-): Promise<GraphQLSchema> {
-  return loadSchemaUsingLoaders(loaders, pointerOrPointers, options, cwd);
-}
diff --git a/packages/graphql-toolkit/tsconfig.json b/packages/graphql-toolkit/tsconfig.json
deleted file mode 100644
index 780ddafb..00000000
--- a/packages/graphql-toolkit/tsconfig.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-  "compilerOptions": {
-    "resolveJsonModule": true,
-    "importHelpers": true,
-    "experimentalDecorators": true,
-    "module": "esnext",
-    "target": "es2018",
-    "lib": ["esnext"],
-    "suppressImplicitAnyIndexErrors": true,
-    "moduleResolution": "node",
-    "emitDecoratorMetadata": true,
-    "sourceMap": true,
-    "declaration": true,
-    "outDir": "./dist/",
-    "noImplicitAny": false,
-    "noImplicitThis": true,
-    "alwaysStrict": true,
-    "noImplicitReturns": true,
-    "noUnusedLocals": false,
-    "noUnusedParameters": false
-  },
-  "exclude": ["node_modules", "tests", "dist"]
-}
diff --git a/packages/loaders/apollo-engine/src/index.ts b/packages/loaders/apollo-engine/src/index.ts
index 8485d031..8b029576 100644
--- a/packages/loaders/apollo-engine/src/index.ts
+++ b/packages/loaders/apollo-engine/src/index.ts
@@ -1,7 +1,6 @@
-import { SchemaLoader, printSchemaWithDirectives, fixSchemaAst } from '@graphql-toolkit/common';
+import { SchemaLoader, SingleFileOptions } from '@graphql-toolkit/common';
 import { ClientConfig } from 'apollo-language-server';
 import { EngineSchemaProvider } from 'apollo-language-server/lib/providers/schema/engine';
-import { parse } from 'graphql';
 
 export class ApolloEngineLoader implements SchemaLoader {
   loaderId() {
@@ -10,16 +9,12 @@ export class ApolloEngineLoader implements SchemaLoader {
   async canLoad(ptr: string) {
     return typeof ptr === 'string' && ptr === 'apollo-engine';
   }
-  async load(_: 'apollo-engine', options: ClientConfig) {
+  async load(_: 'apollo-engine', options: ClientConfig & SingleFileOptions) {
     const engineSchemaProvider = new EngineSchemaProvider(options);
-    const resolvedSchema = await engineSchemaProvider.resolveSchema({});
-    const schema = fixSchemaAst(resolvedSchema, options as any);
+    const schema = await engineSchemaProvider.resolveSchema({});
 
     return {
       location: 'apollo-engine',
-      get document() {
-        return parse(printSchemaWithDirectives(schema));
-      },
       schema,
     };
   }
diff --git a/packages/loaders/code-file/src/index.ts b/packages/loaders/code-file/src/index.ts
index 1109e575..a640fc98 100644
--- a/packages/loaders/code-file/src/index.ts
+++ b/packages/loaders/code-file/src/index.ts
@@ -1,6 +1,6 @@
-import { DocumentNode, GraphQLSchema, parse, IntrospectionQuery, buildClientSchema, Source as GraphQLSource } from 'graphql';
+import { DocumentNode, GraphQLSchema, parse, IntrospectionQuery, buildClientSchema } from 'graphql';
 import { resolve, isAbsolute, extname } from 'path';
-import { SchemaPointerSingle, DocumentPointerSingle, debugLog, printSchemaWithDirectives, Source, UniversalLoader, asArray, fixWindowsPath, isValidPath, fixSchemaAst } from '@graphql-toolkit/common';
+import { SchemaPointerSingle, DocumentPointerSingle, debugLog, SingleFileOptions, Source, UniversalLoader, asArray, fixWindowsPath, isValidPath, fixSchemaAst } from '@graphql-toolkit/common';
 import { existsSync } from 'fs';
 import { gqlPluckFromFile, GraphQLTagPluckOptions } from '@graphql-toolkit/graphql-tag-pluck';
 
@@ -90,7 +90,7 @@ async function tryToLoadFromCodeAst(filePath: string, options?: CodeFileLoaderOp
   }
 }
 
-export type CodeFileLoaderOptions = { forceRawSDL: boolean; noRequire?: boolean; cwd?: string; require?: string | string[]; pluckConfig?: GraphQLTagPluckOptions };
+export type CodeFileLoaderOptions = { require?: string | string[]; pluckConfig?: GraphQLTagPluckOptions } & SingleFileOptions;
 
 const CODE_FILE_EXTENSIONS = ['.ts', '.tsx', '.js', '.jsx', '.vue'];
 
@@ -114,73 +114,52 @@ export class CodeFileLoader implements UniversalLoader<CodeFileLoaderOptions> {
   }
 
   async load(pointer: SchemaPointerSingle | DocumentPointerSingle, options: CodeFileLoaderOptions): Promise<Source> {
-    let loaded: GraphQLSchema | DocumentNode | null = null;
     const normalizedFilePath = isAbsolute(pointer) ? pointer : resolve(options.cwd || process.cwd(), pointer);
 
     try {
       const rawSDL = await tryToLoadFromCodeAst(normalizedFilePath, options);
-
       if (rawSDL) {
-        if (options && options.forceRawSDL) {
-          return {
-            location: normalizedFilePath,
-            get document() {
-              return parse(new GraphQLSource(rawSDL, normalizedFilePath));
-            },
-            rawSDL,
-          };
-        } else {
-          return {
-            location: normalizedFilePath,
-            document: parse(new GraphQLSource(rawSDL, normalizedFilePath)),
-            rawSDL,
-          };
-        }
+        return {
+          location: normalizedFilePath,
+          rawSDL,
+        };
       }
     } catch (e) {
-      debugLog(`Failed to load schema from code file "${normalizedFilePath}" using AST: ${e.message}`);
+      debugLog(`Failed to load schema from code file "${normalizedFilePath}": ${e.message}`);
 
       throw e;
     }
 
-    if (!loaded && !options.noRequire) {
+    if (!options.noRequire) {
       if (options && options.require) {
         await Promise.all(asArray(options.require).map(m => import(m)));
       }
-      const schemaOrDocument = await tryToLoadFromExport(normalizedFilePath);
-      if (schemaOrDocument instanceof GraphQLSchema) {
-        const schema = fixSchemaAst(schemaOrDocument, options as any);
+      let loaded = await tryToLoadFromExport(normalizedFilePath);
+      loaded = loaded['data'] || loaded;
+      if (loaded instanceof GraphQLSchema) {
+        const schema = fixSchemaAst(loaded, options);
         return {
-          get document() {
-            return parse(new GraphQLSource(printSchemaWithDirectives(schema), normalizedFilePath));
-          },
-          schema,
           location: normalizedFilePath,
+          schema,
         };
-      } else if (typeof schemaOrDocument === 'string') {
+      } else if (typeof loaded === 'string') {
         return {
-          get document() {
-            return parse(new GraphQLSource(schemaOrDocument as string, normalizedFilePath));
-          },
           location: normalizedFilePath,
-          rawSDL: schemaOrDocument,
+          rawSDL: loaded,
         };
-      } else if ('kind' in schemaOrDocument && schemaOrDocument.kind === 'Document') {
+      } else if ('kind' in loaded && loaded.kind === 'Document') {
         return {
-          document: schemaOrDocument,
           location: normalizedFilePath,
+          document: loaded,
         };
-      } else {
+      } else if ('__schema' in loaded) {
         return {
-          document: parse(new GraphQLSource(printSchemaWithDirectives(buildClientSchema(schemaOrDocument['data'] ? schemaOrDocument['data'] : schemaOrDocument)))),
+          schema: buildClientSchema(loaded, options),
           location: normalizedFilePath,
         };
       }
     }
 
-    return {
-      document: null,
-      location: normalizedFilePath,
-    };
+    return null;
   }
 }
diff --git a/packages/loaders/git/src/index.ts b/packages/loaders/git/src/index.ts
index 1f968598..850032bc 100644
--- a/packages/loaders/git/src/index.ts
+++ b/packages/loaders/git/src/index.ts
@@ -1,7 +1,5 @@
-import { buildClientSchema, printSchema, parse, DocumentNode, Source as GraphQLSource, Kind, ParseOptions } from 'graphql';
-import { UniversalLoader, parseGraphQLSDL, parseGraphQLJSON } from '@graphql-toolkit/common';
+import { UniversalLoader, parseGraphQLSDL, parseGraphQLJSON, SingleFileOptions } from '@graphql-toolkit/common';
 import simplegit from 'simple-git/promise';
-import { GraphQLSchemaValidationOptions } from 'graphql/type/schema';
 
 // git:branch:path/to/file
 function extractData(
@@ -22,8 +20,6 @@ function extractData(
   };
 }
 
-export type GitLoaderOptions = ParseOptions & GraphQLSchemaValidationOptions;
-
 export class GitLoader implements UniversalLoader {
   loaderId() {
     return 'git-loader';
@@ -31,7 +27,7 @@ export class GitLoader implements UniversalLoader {
   async canLoad(pointer: string) {
     return typeof pointer === 'string' && pointer.toLowerCase().startsWith('git:');
   }
-  async load(pointer: string, options: GitLoaderOptions) {
+  async load(pointer: string, options: SingleFileOptions) {
     const { ref, path } = extractData(pointer);
     const git = simplegit();
 
diff --git a/packages/loaders/github/src/index.ts b/packages/loaders/github/src/index.ts
index aff64c10..c3de0434 100644
--- a/packages/loaders/github/src/index.ts
+++ b/packages/loaders/github/src/index.ts
@@ -1,7 +1,5 @@
-import { buildClientSchema, printSchema, parse, DocumentNode, ParseOptions } from 'graphql';
-import { UniversalLoader, parseGraphQLSDL, parseGraphQLJSON } from '@graphql-toolkit/common';
+import { UniversalLoader, parseGraphQLSDL, parseGraphQLJSON, SingleFileOptions } from '@graphql-toolkit/common';
 import { fetch } from 'cross-fetch';
-import { GraphQLSchemaValidationOptions } from 'graphql/type/schema';
 
 // github:owner/name#ref:path/to/file
 function extractData(
@@ -24,7 +22,7 @@ function extractData(
   };
 }
 
-export interface GithubLoaderOptions extends ParseOptions, GraphQLSchemaValidationOptions {
+export interface GithubLoaderOptions extends SingleFileOptions {
   token: string;
 }
 
diff --git a/packages/loaders/graphql-file/src/index.ts b/packages/loaders/graphql-file/src/index.ts
index 528ce47e..f173f6b1 100644
--- a/packages/loaders/graphql-file/src/index.ts
+++ b/packages/loaders/graphql-file/src/index.ts
@@ -1,39 +1,16 @@
-import { Source, UniversalLoader, DocumentPointerSingle, SchemaPointerSingle, isValidPath } from '@graphql-toolkit/common';
-import { parse, Source as GraphQLSource, Kind, DocumentNode, ParseOptions } from 'graphql';
+import { Source, UniversalLoader, DocumentPointerSingle, SchemaPointerSingle, isValidPath, parseGraphQLSDL, SingleFileOptions } from '@graphql-toolkit/common';
+import { ParseOptions } from 'graphql';
 import { extname, isAbsolute, resolve } from 'path';
 import { readFileSync, existsSync } from 'fs';
 
-export type GraphQLFileLoaderOptions = { skipGraphQLImport?: boolean; cwd?: string } & ParseOptions;
-
 const GQL_EXTENSIONS = ['.gql', '.graphql', '.graphqls'];
 
-export function parseGraphQLSDL(location: string, rawSDL: string, options: ParseOptions) {
-  let document: DocumentNode;
-  try {
-    document = parse(new GraphQLSource(rawSDL, location), options);
-  } catch (e) {
-    if (e.message.includes('EOF')) {
-      document = {
-        kind: Kind.DOCUMENT,
-        definitions: [],
-      };
-    } else {
-      throw e;
-    }
-  }
-  return {
-    location,
-    document,
-    rawSDL,
-  };
-}
-
-export class GraphQLFileLoader implements UniversalLoader<GraphQLFileLoaderOptions> {
+export class GraphQLFileLoader implements UniversalLoader<SingleFileOptions> {
   loaderId(): string {
     return 'graphql-file';
   }
 
-  async canLoad(pointer: SchemaPointerSingle | DocumentPointerSingle, options: GraphQLFileLoaderOptions): Promise<boolean> {
+  async canLoad(pointer: SchemaPointerSingle | DocumentPointerSingle, options: SingleFileOptions): Promise<boolean> {
     if (isValidPath(pointer)) {
       const extension = extname(pointer).toLowerCase();
       if (GQL_EXTENSIONS.includes(extension)) {
@@ -47,8 +24,8 @@ export class GraphQLFileLoader implements UniversalLoader<GraphQLFileLoaderOptio
     return false;
   }
 
-  async load(pointer: SchemaPointerSingle | DocumentPointerSingle, options: GraphQLFileLoaderOptions): Promise<Source> {
-    const normalizedFilePath = isAbsolute(pointer) ? pointer : resolve(options.cwd || process.cwd(), pointer);
+  async load(pointer: SchemaPointerSingle | DocumentPointerSingle, options: SingleFileOptions): Promise<Source> {
+    const normalizedFilePath = isAbsolute(pointer) ? pointer : resolve(options.cwd, pointer);
     const rawSDL = readFileSync(normalizedFilePath, 'utf-8').trim();
 
     return parseGraphQLSDL(pointer, rawSDL, options);
diff --git a/packages/loaders/json-file/src/index.ts b/packages/loaders/json-file/src/index.ts
index 7fb16683..83694141 100644
--- a/packages/loaders/json-file/src/index.ts
+++ b/packages/loaders/json-file/src/index.ts
@@ -1,58 +1,13 @@
 import { extname, isAbsolute, resolve as resolvePath } from 'path';
-import { IntrospectionQuery, buildClientSchema, parse } from 'graphql';
-import { Source, printSchemaWithDirectives, SchemaPointerSingle, DocumentLoader, isValidPath } from '@graphql-toolkit/common';
+import { Source, parseGraphQLJSON, SchemaPointerSingle, DocumentLoader, isValidPath, SingleFileOptions } from '@graphql-toolkit/common';
 import { existsSync, readFileSync } from 'fs';
 
-function stripBOM(content: string): string {
-  content = content.toString();
-  // Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)
-  // because the buffer-to-string conversion in `fs.readFileSync()`
-  // translates it to FEFF, the UTF-16 BOM.
-  if (content.charCodeAt(0) === 0xfeff) {
-    content = content.slice(1);
-  }
-
-  return content;
-}
-
-function parseBOM(content: string): any {
-  return JSON.parse(stripBOM(content));
-}
-
-export function parseGraphQLJSON(pointer: string, jsonContent: string): Source {
-  let parsedJson = parseBOM(jsonContent);
-
-  if (parsedJson['data']) {
-    parsedJson = parsedJson['data'];
-  }
-
-  if (parsedJson.kind === 'Document') {
-    const document = parsedJson;
-    return {
-      location: pointer,
-      document,
-    };
-  } else if (parsedJson.__schema) {
-    const schema = buildClientSchema(parsedJson, options as any);
-    return {
-      location: pointer,
-      document: parse(printSchemaWithDirectives(schema)),
-      schema,
-    };
-  }
-  throw new Error(`Not valid content`);
-}
-
-export interface JsonFileLoaderOptions {
-  cwd?: string;
-}
-
 export class JsonFileLoader implements DocumentLoader {
   loaderId(): string {
     return 'json-file';
   }
 
-  async canLoad(pointer: SchemaPointerSingle, options: JsonFileLoaderOptions): Promise<boolean> {
+  async canLoad(pointer: SchemaPointerSingle, options: SingleFileOptions): Promise<boolean> {
     if (isValidPath(pointer)) {
       const extension = extname(pointer).toLowerCase();
       if (extension === '.json') {
@@ -66,12 +21,12 @@ export class JsonFileLoader implements DocumentLoader {
     return false;
   }
 
-  async load(pointer: SchemaPointerSingle, options: JsonFileLoaderOptions): Promise<Source> {
+  async load(pointer: SchemaPointerSingle, options: SingleFileOptions): Promise<Source> {
     const normalizedFilepath = isAbsolute(pointer) ? pointer : resolvePath(options.cwd || process.cwd(), pointer);
 
     try {
       const jsonContent = readFileSync(normalizedFilepath, 'utf8');
-      return parseGraphQLJSON(pointer, jsonContent);
+      return parseGraphQLJSON(pointer, jsonContent, options);
     } catch (e) {
       throw new Error(`Unable to read JSON file: ${normalizedFilepath}`);
     }
diff --git a/packages/loaders/module/src/index.ts b/packages/loaders/module/src/index.ts
index ffadf288..941fdcfb 100644
--- a/packages/loaders/module/src/index.ts
+++ b/packages/loaders/module/src/index.ts
@@ -1,5 +1,5 @@
 import { parse, isSchema } from 'graphql';
-import { UniversalLoader, fixSchemaAst, printSchemaWithDirectives } from '@graphql-toolkit/common';
+import { UniversalLoader, fixSchemaAst, printSchemaWithDirectives, SingleFileOptions } from '@graphql-toolkit/common';
 
 // module:node/module#export
 function extractData(
@@ -27,7 +27,7 @@ export class ModuleLoader implements UniversalLoader {
   async canLoad(pointer: string) {
     return typeof pointer === 'string' && pointer.toLowerCase().startsWith('module:');
   }
-  async load(pointer: string, options: any) {
+  async load(pointer: string, options: SingleFileOptions) {
     const { modulePath, exportName } = extractData(pointer);
 
     let thing: any;
diff --git a/packages/loaders/url/src/index.ts b/packages/loaders/url/src/index.ts
index 6cf7e6e8..86a99e46 100644
--- a/packages/loaders/url/src/index.ts
+++ b/packages/loaders/url/src/index.ts
@@ -1,5 +1,5 @@
 import { buildClientSchema, parse, IntrospectionQuery, print, getIntrospectionQuery } from 'graphql';
-import { SchemaPointerSingle, Source, printSchemaWithDirectives, DocumentLoader, fixSchemaAst } from '@graphql-toolkit/common';
+import { SchemaPointerSingle, Source, DocumentLoader, SingleFileOptions } from '@graphql-toolkit/common';
 import { isUri } from 'valid-url';
 import { fetch as crossFetch } from 'cross-fetch';
 import { makeRemoteExecutableSchema } from '@kamilkisiela/graphql-tools';
@@ -9,7 +9,7 @@ export type FetchFn = typeof import('cross-fetch').fetch;
 
 type Headers = Record<string, string> | Array<Record<string, string>>;
 
-export interface LoadFromUrlOptions {
+export interface LoadFromUrlOptions extends SingleFileOptions {
   headers?: Headers;
   customFetch?: FetchFn | string;
   method?: 'GET' | 'POST';
@@ -95,14 +95,10 @@ export class UrlLoader implements DocumentLoader<LoadFromUrlOptions> {
       schema: clientSchema,
       fetcher,
     });
-    const schema = fixSchemaAst(remoteExecutableSchema, options as any);
 
     return {
       location: pointer,
-      get document() {
-        return parse(printSchemaWithDirectives(schema));
-      },
-      schema,
+      schema: remoteExecutableSchema,
     };
   }
 }

From 27f81355d95794496ae027eb8b7e27a5140abf76 Mon Sep 17 00:00:00 2001
From: Arda TANRIKULU <ardatanrikulu@gmail.com>
Date: Sun, 29 Dec 2019 18:59:54 +0300
Subject: [PATCH 3/8] New implementation

---
 packages/common/src/fix-schema-ast.ts         |   38 +-
 packages/common/src/loaders.ts                |    3 -
 packages/core/src/import-parser/index.ts      |  179 +-
 packages/core/src/load-typedefs.ts            |  103 +-
 .../loaders/schema/import-schema.spec.ts      | 1572 +++++++++--------
 .../tests/load-from-code-file.spec.ts         |   18 +-
 6 files changed, 1011 insertions(+), 902 deletions(-)

diff --git a/packages/common/src/fix-schema-ast.ts b/packages/common/src/fix-schema-ast.ts
index b3107325..fcaf56c6 100644
--- a/packages/common/src/fix-schema-ast.ts
+++ b/packages/common/src/fix-schema-ast.ts
@@ -1,24 +1,24 @@
-import { GraphQLSchema, buildASTSchema, parse, BuildSchemaOptions } from 'graphql';
+import { GraphQLSchema, buildASTSchema, parse, BuildSchemaOptions, ParseOptions } from 'graphql';
 import { printSchemaWithDirectives } from '.';
 
-export function fixSchemaAst(schema: GraphQLSchema, options?: BuildSchemaOptions) {
-  if (!schema.astNode) {
-    Object.defineProperty(schema, 'astNode', {
-      get: () => {
-        return buildASTSchema(parse(printSchemaWithDirectives(schema)), {
-          commentDescriptions: true,
-          ...(options || {}),
-        }).astNode;
-      },
-    });
-    Object.defineProperty(schema, 'extensionASTNodes', {
-      get: () => {
-        return buildASTSchema(parse(printSchemaWithDirectives(schema)), {
-          commentDescriptions: true,
-          ...(options || {}),
-        }).extensionASTNodes;
-      },
-    });
+export function fixSchemaAst(schema: GraphQLSchema, options: BuildSchemaOptions) {
+  if (!schema.astNode || !schema.extensionASTNodes) {
+    const schemaWithValidAst = buildASTSchema(
+      parse(printSchemaWithDirectives(schema), {
+        noLocation: true,
+        ...(options || {}),
+      }),
+      {
+        commentDescriptions: true,
+        ...(options || {}),
+      }
+    );
+    if (!schema.astNode) {
+      schema.astNode = schemaWithValidAst.astNode;
+    }
+    if (!schema.extensionASTNodes) {
+      schema.extensionASTNodes = schemaWithValidAst.extensionASTNodes;
+    }
   }
   return schema;
 }
diff --git a/packages/common/src/loaders.ts b/packages/common/src/loaders.ts
index b5cc3933..f7e88d75 100644
--- a/packages/common/src/loaders.ts
+++ b/packages/common/src/loaders.ts
@@ -13,9 +13,6 @@ export type SingleFileOptions = ParseOptions &
   GraphQLSchemaValidationOptions &
   BuildSchemaOptions & {
     noRequire?: boolean;
-    cache?: { [key: string]: Source };
-    loaders: Loader[];
-    filterKinds?: string[];
     cwd?: string;
   };
 
diff --git a/packages/core/src/import-parser/index.ts b/packages/core/src/import-parser/index.ts
index d2870fab..01da1487 100644
--- a/packages/core/src/import-parser/index.ts
+++ b/packages/core/src/import-parser/index.ts
@@ -1,10 +1,13 @@
-import { DefinitionNode } from 'graphql';
-import { groupBy, includes } from 'lodash';
+import { DefinitionNode, parse, ObjectTypeDefinitionNode, DocumentNode, Kind } from 'graphql';
+import { groupBy, keyBy, isEqual, uniqBy } from 'lodash';
 import resolveFrom from 'resolve-from';
+import { loadSingleFile } from '../load-typedefs';
+import { LoadSchemaOptions } from '../schema';
 
-import { ValidDefinitionNode } from './definition';
-import { dirname, join } from 'path';
+import { completeDefinitionPool, ValidDefinitionNode } from './definition';
 import { realpathSync } from 'fs';
+import { join, dirname } from 'path';
+import { Source } from '@graphql-toolkit/common';
 
 /**
  * Describes the information from a single import line
@@ -15,6 +18,8 @@ export interface RawModule {
   from: string;
 }
 
+const rootFields = ['Query', 'Mutation', 'Subscription'];
+
 const gqlExt = /\.g(raph)?ql$/;
 function isGraphQLFile(f: string) {
   return gqlExt.test(f);
@@ -58,6 +63,66 @@ export function parseSDL(sdl: string): RawModule[] {
     .map(parseImportLine);
 }
 
+/**
+ * Main entry point. Recursively process all import statement in a schema
+ *
+ * @param filePath File path to the initial schema file
+ * @returns Single bundled schema with all imported types
+ */
+export async function processImportSyntax(documentSource: Source, options: LoadSchemaOptions): Promise<void> {
+  const mergeableTypes = options.mergeableTypes || [];
+  const allMergeableTypes = [...mergeableTypes, ...rootFields];
+  let document = documentSource.document;
+
+  // Recursively process the imports, starting by importing all types from the initial schema
+  await collectDefinitions(['*'], documentSource, options);
+
+  // Post processing of the final schema (missing types, unused types, etc.)
+  // Query, Mutation and Subscription should be merged
+  // And should always be in the first set, to make sure they
+  // are not filtered out.
+  const firstTypes = options.typeDefinitions.flat().filter(d => allMergeableTypes.includes(d.name.value));
+  const secondFirstTypes = options.typeDefinitions[0].filter(d => !allMergeableTypes.includes(d.name.value));
+  const otherFirstTypes = options.typeDefinitions
+    .slice(1)
+    .flat()
+    .filter(d => !allMergeableTypes.includes(d.name.value));
+
+  const firstSet = firstTypes.concat(secondFirstTypes, otherFirstTypes);
+  const processedTypeNames: string[] = [];
+  const mergedFirstTypes = [];
+  for (const type of firstSet) {
+    if (!processedTypeNames.includes(type.name.value)) {
+      processedTypeNames.push(type.name.value);
+      mergedFirstTypes.push(type);
+    } else {
+      const existingType = mergedFirstTypes.find(t => t.name.value === type.name.value) as any;
+
+      existingType.fields = uniqBy(existingType.fields.concat((type as ObjectTypeDefinitionNode).fields), 'name.value');
+    }
+  }
+
+  (document as any).definitions = completeDefinitionPool(options.allDefinitions.flat(), firstSet, options.typeDefinitions.flat());
+}
+
+/**
+ * Parses a schema into a graphql DocumentNode.
+ * If the schema is empty a DocumentNode with empty definitions will be created.
+ *
+ * @param sdl Schema to parse
+ * @returns A graphql DocumentNode with definitions of the parsed sdl.
+ */
+export function getDocumentFromSDL(sdl: string): DocumentNode {
+  if (isEmptySDL(sdl)) {
+    return {
+      kind: Kind.DOCUMENT,
+      definitions: [],
+    };
+  } else {
+    return parse(sdl, { noLocation: true });
+  }
+}
+
 /**
  * Check if a schema contains any type definitions at all.
  *
@@ -88,26 +153,7 @@ export function resolveModuleFilePath(filePath: string, importFrom: string): str
       return realpathSync(join(dirName, importFrom));
     } catch (e) {
       if (e.code === 'ENOENT') {
-        const addedExtensions = new Array<string>();
-        for (const graphqlFileExtension of ['.gql', '.gqls', '.graphql', '.graphqls']) {
-          if (!(graphqlFileExtension in require.extensions)) {
-            require.extensions[graphqlFileExtension] = () => ({});
-            addedExtensions.push(graphqlFileExtension);
-          }
-        }
-        function cleanRequireExtensions() {
-          for (const extension of addedExtensions) {
-            delete require.extensions[extension];
-          }
-        }
-        try {
-          const resolvedPath = resolveFrom(dirName, importFrom);
-          cleanRequireExtensions();
-          return resolvedPath;
-        } catch (e) {
-          cleanRequireExtensions();
-          throw e;
-        }
+        return resolveFrom(dirName, importFrom);
       }
     }
   }
@@ -115,6 +161,52 @@ export function resolveModuleFilePath(filePath: string, importFrom: string): str
   return importFrom;
 }
 
+/**
+ * Recursively process all schema files. Keeps track of both the filtered
+ * type definitions, and all type definitions, because they might be needed
+ * in post-processing (to add missing types)
+ *
+ * @param imports Types specified in the import statement
+ * @param sdl Current schema
+ * @param filePath File location for current schema
+ * @param Tracking of processed schemas (for circular dependencies)
+ * @param Tracking of imported type definitions per schema
+ * @param Tracking of all type definitions per schema
+ * @returns Both the collection of all type definitions, and the collection of imported type definitions
+ */
+export async function collectDefinitions(imports: string[], documentSource: Source, options: LoadSchemaOptions): Promise<void> {
+  // Get TypeDefinitionNodes from current schema
+  const document = documentSource.document;
+
+  // Add all definitions to running total
+  options.allDefinitions.push(filterTypeDefinitions(document.definitions));
+
+  // Filter TypeDefinitionNodes by type and defined imports
+  const currentTypeDefinitions = filterImportedDefinitions(imports, document.definitions, options.allDefinitions);
+
+  // Add typedefinitions to running total
+  options.typeDefinitions.push(currentTypeDefinitions);
+
+  // Read imports from current file
+  const rawModules = parseSDL(documentSource.rawSDL);
+
+  // Process each file (recursively)
+  await Promise.all(
+    rawModules.map(async m => {
+      // If it was not yet processed (in case of circular dependencies)
+      const moduleFilePath = resolveModuleFilePath(documentSource.location, m.from);
+
+      const processedFile = options.processedFiles.get(moduleFilePath);
+      if (!processedFile || !processedFile.find(rModule => isEqual(rModule, m))) {
+        // Mark this specific import line as processed for this file (for cicular dependency cases)
+        options.processedFiles.set(moduleFilePath, processedFile ? processedFile.concat(m) : [m]);
+        const result = await loadSingleFile(moduleFilePath, options);
+        await collectDefinitions(m.imports, result, options);
+      }
+    })
+  );
+}
+
 /**
  * Filter the types loaded from a schema, first by relevant types,
  * then by the types specified in the import statement.
@@ -123,30 +215,35 @@ export function resolveModuleFilePath(filePath: string, importFrom: string): str
  * @param typeDefinitions All definitions from a schema
  * @returns Filtered collection of type definitions
  */
-export function filterImportedDefinitions(imports: string[], typeDefinitions: ReadonlyArray<DefinitionNode>) {
+function filterImportedDefinitions(imports: string[], typeDefinitions: ReadonlyArray<DefinitionNode>, allDefinitions: ValidDefinitionNode[][] = []): ValidDefinitionNode[] {
   // This should do something smart with fields
 
-  if (includes(imports, '*')) {
-    return typeDefinitions;
+  const filteredDefinitions = filterTypeDefinitions(typeDefinitions);
+
+  if (imports.includes('*')) {
+    if (imports.length === 1 && imports[0] === '*' && allDefinitions.length > 1) {
+      const previousTypeDefinitions: { [key: string]: DefinitionNode } = keyBy(
+        allDefinitions
+          .slice(0, allDefinitions.length - 1)
+          .flat()
+          .filter(def => !rootFields.includes(def.name.value)),
+        def => def.name.value
+      );
+      return typeDefinitions.filter(typeDef => typeDef.kind === 'ObjectTypeDefinition' && previousTypeDefinitions[typeDef.name.value]) as ObjectTypeDefinitionNode[];
+    }
+    return filteredDefinitions;
   } else {
-    const result = typeDefinitions.filter(d => {
-      if ('name' in d) {
-        return includes(
-          imports.map(i => i.split('.')[0]),
-          d.name.value
-        );
-      }
-      return true;
-    });
+    const importedTypes = imports.map(i => i.split('.')[0]);
+    const result = filteredDefinitions.filter(d => importedTypes.includes(d.name.value));
     const fieldImports = imports.filter(i => i.split('.').length > 1);
     const groupedFieldImports = groupBy(fieldImports, x => x.split('.')[0]);
 
     for (const rootType in groupedFieldImports) {
       const fields = groupedFieldImports[rootType].map(x => x.split('.')[1]);
-      const objectTypeDefinition: any = typeDefinitions.find(def => 'name' in def && def.name.value === rootType);
+      const objectTypeDefinition: any = filteredDefinitions.find(def => def.name.value === rootType);
 
-      if ('fields' in objectTypeDefinition) {
-        objectTypeDefinition.fields = objectTypeDefinition.fields.filter((f: any) => includes(fields, f.name.value) || includes(fields, '*'));
+      if (objectTypeDefinition && 'fields' in objectTypeDefinition && !fields.includes('*')) {
+        objectTypeDefinition.fields = objectTypeDefinition.fields.filter((f: any) => fields.includes(f.name.value) || fields.includes('*'));
       }
     }
 
@@ -161,6 +258,6 @@ export function filterImportedDefinitions(imports: string[], typeDefinitions: Re
  * @returns Relevant type definitions
  */
 export function filterTypeDefinitions(definitions: ReadonlyArray<DefinitionNode>): ValidDefinitionNode[] {
-  const validKinds = ['DirectiveDefinition', 'ScalarTypeDefinition', 'ObjectTypeDefinition', 'ObjectTypeExtension', 'InterfaceTypeDefinition', 'EnumTypeDefinition', 'UnionTypeDefinition', 'InputObjectTypeDefinition'];
-  return definitions.filter(d => includes(validKinds, d.kind)).map(d => d as ValidDefinitionNode);
+  return definitions.filter(d => validKinds.includes(d.kind)).map(d => d as ValidDefinitionNode);
 }
+const validKinds = ['DirectiveDefinition', 'ScalarTypeDefinition', 'ObjectTypeDefinition', 'ObjectTypeExtension', 'InterfaceTypeDefinition', 'EnumTypeDefinition', 'UnionTypeDefinition', 'InputObjectTypeDefinition'];
diff --git a/packages/core/src/load-typedefs.ts b/packages/core/src/load-typedefs.ts
index 70d2d265..9dc38d00 100644
--- a/packages/core/src/load-typedefs.ts
+++ b/packages/core/src/load-typedefs.ts
@@ -1,16 +1,25 @@
-import { Source as GraphQLSource, GraphQLSchema, parse, Kind } from 'graphql';
-import { Source, asArray, isDocumentString, debugLog, fixWindowsPath, printSchemaWithDirectives, parseGraphQLSDL, fixSchemaAst, SingleFileOptions } from '@graphql-toolkit/common';
+import { GraphQLSchema, parse, Kind, Source as GraphQLSource, print } from 'graphql';
+import { Source, asArray, isDocumentString, debugLog, fixWindowsPath, printSchemaWithDirectives, parseGraphQLSDL, fixSchemaAst, SingleFileOptions, Loader } from '@graphql-toolkit/common';
 import { join } from 'path';
 import isGlob from 'is-glob';
 import globby from 'globby';
 import { filterKind } from './filter-document-kind';
-import { parseSDL, isEmptySDL, filterImportedDefinitions, resolveModuleFilePath } from './import-parser';
+import { RawModule, processImportSyntax, isEmptySDL } from './import-parser';
+import { ValidDefinitionNode } from './import-parser/definition';
 
 export type LoadTypedefsOptions<ExtraConfig = { [key: string]: any }> = SingleFileOptions &
   ExtraConfig & {
+    processedFiles?: Map<string, RawModule[]>;
+    typeDefinitions?: ValidDefinitionNode[][];
+    allDefinitions?: ValidDefinitionNode[][];
+    cache?: { [key: string]: Source };
+    loaders: Loader[];
+    filterKinds?: string[];
     ignore?: string | string[];
     preresolvedTypeDefs?: { [key: string]: string };
     sort?: boolean;
+    skipGraphQLImport?: boolean;
+    forceGraphQLImport?: boolean;
   };
 
 export type UnnormalizedTypeDefPointer = { [key: string]: any } | string;
@@ -72,18 +81,13 @@ export async function loadTypedefs<AdditionalConfig = {}>(pointerOrPointers: Unn
   options.cache = options.cache || {};
   options.cwd = options.cwd || process.cwd();
   options.sort = 'sort' in options ? options.sort : true;
+  options.processedFiles = options.processedFiles || new Map();
+  options.allDefinitions = options.allDefinitions || [];
+  options.typeDefinitions = options.typeDefinitions || [];
 
   for (const pointer in normalizedPointerOptionsMap) {
     const pointerOptions = normalizedPointerOptionsMap[pointer];
-    if (options.preresolvedTypeDefs && pointer in options.preresolvedTypeDefs) {
-      loadPromises$.push(
-        Promise.resolve().then(async () => {
-          const result = parseGraphQLSDL(pointer, options.preresolvedTypeDefs[pointer], options);
-          found.push(result);
-          options.cache[pointer] = result;
-        })
-      );
-    } else if (isDocumentString(pointer)) {
+    if (isDocumentString(pointer)) {
       loadPromises$.push(
         Promise.resolve().then(async () => {
           const result = parseGraphQLSDL(`${stringToHash(pointer)}.graphql`, pointer, options);
@@ -209,51 +213,43 @@ export async function loadTypedefs<AdditionalConfig = {}>(pointerOrPointers: Unn
 
   await Promise.all(loadPromises$);
 
-  const importsLoadPromises: Promise<void>[] = [];
-
   const foundValid: Source[] = [];
 
-  for (const partialSource of found) {
-    if (partialSource) {
-      const resultSource: Source = { ...partialSource };
-      if (resultSource.schema) {
-        resultSource.schema = fixSchemaAst(resultSource.schema, options as any);
-        resultSource.rawSDL = printSchemaWithDirectives(resultSource.schema);
-      }
-      if (resultSource.rawSDL) {
-        const imports = parseSDL(resultSource.rawSDL);
-        for (const i of imports) {
-          importsLoadPromises.push(
-            Promise.resolve().then(async () => {
-              const sources = await loadTypedefs(resolveModuleFilePath(resultSource.location, i.from), options);
-              for (const source of sources) {
-                foundValid.unshift({
-                  ...source,
-                  document: {
-                    ...source.document,
-                    definitions: filterImportedDefinitions(i.imports, source.document.definitions),
-                  },
-                });
-              }
-            })
-          );
+  await Promise.all(
+    found.map(async partialSource => {
+      if (partialSource) {
+        const resultSource: Source = { ...partialSource };
+        if (resultSource.schema) {
+          resultSource.schema = fixSchemaAst(resultSource.schema, options);
+          resultSource.rawSDL = printSchemaWithDirectives(resultSource.schema);
         }
-        if (!isEmptySDL(resultSource.rawSDL)) {
-          resultSource.document = parse(new GraphQLSource(resultSource.rawSDL, resultSource.location), options);
-        }
-      }
-      if (resultSource.document) {
-        if (options.filterKinds) {
-          resultSource.document = filterKind(resultSource.document, options.filterKinds);
+        if (resultSource.rawSDL) {
+          if (isEmptySDL(resultSource.rawSDL)) {
+            resultSource.document = {
+              kind: Kind.DOCUMENT,
+              definitions: [],
+            };
+          } else {
+            resultSource.document = parse(new GraphQLSource(resultSource.rawSDL, resultSource.location), options);
+          }
         }
-        if (resultSource.document.definitions && resultSource.document.definitions.length > 0) {
-          foundValid.push(resultSource);
+        if (resultSource.document) {
+          if (options.filterKinds) {
+            resultSource.document = filterKind(resultSource.document, options.filterKinds);
+          }
+          if (!resultSource.rawSDL) {
+            resultSource.rawSDL = print(resultSource.document);
+          }
+          if (options.forceGraphQLImport || (!options.skipGraphQLImport && /^\#.*import /i.test(resultSource.rawSDL.trimLeft()))) {
+            await processImportSyntax(resultSource, options);
+          }
+          if (resultSource.document.definitions && resultSource.document.definitions.length > 0) {
+            foundValid.push(resultSource);
+          }
         }
       }
-    }
-  }
-
-  await Promise.all(importsLoadPromises);
+    })
+  );
 
   const pointerList = Object.keys(normalizedPointerOptionsMap);
   if (pointerList.length > 0 && foundValid.length === 0) {
@@ -263,10 +259,13 @@ export async function loadTypedefs<AdditionalConfig = {}>(pointerOrPointers: Unn
   return options.sort ? foundValid.sort((left, right) => left.location.localeCompare(right.location)) : foundValid;
 }
 
-export async function loadSingleFile(pointer: string, options: SingleFileOptions): Promise<Source> {
+export async function loadSingleFile(pointer: string, options: LoadTypedefsOptions): Promise<Source> {
   if (pointer in options.cache) {
     return options.cache[pointer];
   }
+  if (options.preresolvedTypeDefs && pointer in options.preresolvedTypeDefs) {
+    return parseGraphQLSDL(pointer, options.preresolvedTypeDefs[pointer], options);
+  }
   try {
     for (const loader of options.loaders) {
       const canLoad = await loader.canLoad(pointer, options);
diff --git a/packages/core/tests/loaders/schema/import-schema.spec.ts b/packages/core/tests/loaders/schema/import-schema.spec.ts
index e4fc6d3e..2fb2abdd 100644
--- a/packages/core/tests/loaders/schema/import-schema.spec.ts
+++ b/packages/core/tests/loaders/schema/import-schema.spec.ts
@@ -1,962 +1,972 @@
 import { parseImportLine, parseSDL, loadTypedefs, LoadTypedefsOptions, OPERATION_KINDS } from '@graphql-toolkit/core';
 import * as fs from 'fs'
-import { print } from 'graphql';
+import { print, DocumentNode, Kind } from 'graphql';
 import { JsonFileLoader } from '@graphql-toolkit/json-file-loader';
 import { UrlLoader } from '@graphql-toolkit/url-loader';
 import { CodeFileLoader } from '@graphql-toolkit/code-file-loader';
 import { GraphQLFileLoader } from '@graphql-toolkit/graphql-file-loader';
 import { mergeTypeDefs } from '@graphql-toolkit/schema-merging';
+import { parse } from 'graphql';
 
 const importSchema = (
-    schema: string, schemas?: { [name: string]: string }, options?: LoadTypedefsOptions
-) => 
-    loadTypedefs(
-        schema, { 
-            loaders: [new UrlLoader(), new JsonFileLoader(), new GraphQLFileLoader(), new CodeFileLoader()],
-            filterKinds: OPERATION_KINDS,
-            preresolvedTypeDefs: schemas,
-            sort: false,
-            ...options, 
-        }).then(r => print(mergeTypeDefs(r.map(r => r.document), { useSchemaDefinition: false })));
+  schema: string, schemas?: { [name: string]: string }, options?: LoadTypedefsOptions
+) =>
+  loadTypedefs(
+    schema, {
+    loaders: [new UrlLoader(), new JsonFileLoader(), new GraphQLFileLoader(), new CodeFileLoader()],
+    filterKinds: OPERATION_KINDS,
+    preresolvedTypeDefs: schemas,
+    sort: false,
+    forceGraphQLImport: true,
+    ...options,
+  }).then(r => print(mergeTypeDefs(r.map(r => r.document), { useSchemaDefinition: false })));
 
 test('parseImportLine: parse single import', () => {
-    expect(parseImportLine(`import A from "schema.graphql"`)).toEqual({
-        imports: ['A'],
-        from: 'schema.graphql',
-    })
+  expect(parseImportLine(`import A from "schema.graphql"`)).toEqual({
+    imports: ['A'],
+    from: 'schema.graphql',
+  })
 })
 
 test('parseImportLine: optional semicolon', () => {
-    expect(parseImportLine(`import A from "schema.graphql";`)).toEqual({
-        imports: ['A'],
-        from: 'schema.graphql',
-    });
+  expect(parseImportLine(`import A from "schema.graphql";`)).toEqual({
+    imports: ['A'],
+    from: 'schema.graphql',
+  });
 })
 
 test('parseImportLine: invalid', async () => {
-    expect(() => parseImportLine(`import from "schema.graphql"`)).toThrow();
+  expect(() => parseImportLine(`import from "schema.graphql"`)).toThrow();
 })
 
 test('parseImportLine: invalid 2', async () => {
-    expect(() => parseImportLine(`import A from ""`)).toThrow();
+  expect(() => parseImportLine(`import A from ""`)).toThrow();
 })
 
 test('parseImportLine: parse multi import', async () => {
-    expect(parseImportLine(`import A, B from "schema.graphql"`)).toEqual({
-        imports: ['A', 'B'],
-        from: 'schema.graphql',
-    })
+  expect(parseImportLine(`import A, B from "schema.graphql"`)).toEqual({
+    imports: ['A', 'B'],
+    from: 'schema.graphql',
+  })
 })
 
 test('parseImportLine: parse multi import (weird spacing)', async () => {
-    expect(parseImportLine(`import  A  ,B   from "schema.graphql"`)).toEqual({
-        imports: ['A', 'B'],
-        from: 'schema.graphql',
-    })
+  expect(parseImportLine(`import  A  ,B   from "schema.graphql"`)).toEqual({
+    imports: ['A', 'B'],
+    from: 'schema.graphql',
+  })
 })
 
 test('parseImportLine: different path', async () => {
-    expect(parseImportLine(`import A from "../new/schema.graphql"`)).toEqual({
-        imports: ['A'],
-        from: '../new/schema.graphql',
-    })
+  expect(parseImportLine(`import A from "../new/schema.graphql"`)).toEqual({
+    imports: ['A'],
+    from: '../new/schema.graphql',
+  })
 })
 
 test('parseImportLine: module in node_modules', async () => {
-    expect(parseImportLine(`import A from "module-name"`)).toEqual({
-        imports: ['A'],
-        from: 'module-name',
-    })
+  expect(parseImportLine(`import A from "module-name"`)).toEqual({
+    imports: ['A'],
+    from: 'module-name',
+  })
 })
 
 test('parseSDL: non-import comment', async () => {
-    expect(parseSDL(`#importent: comment`)).toEqual([]);
+  expect(parseSDL(`#importent: comment`)).toEqual([]);
 })
 
 test('parse: multi line import', async () => {
-    const sdl = `\
-# import A from "a.graphql"
-# import * from "b.graphql"
-  `
-    expect(parseSDL(sdl)).toEqual([
-        {
-            imports: ['A'],
-            from: 'a.graphql',
-        },
-        {
-            imports: ['*'],
-            from: 'b.graphql',
-        },
-    ])
+  const sdl = `\
+        # import A from "a.graphql"
+        # import * from "b.graphql"
+          `
+  expect(parseSDL(sdl)).toEqual([
+    {
+      imports: ['A'],
+      from: 'a.graphql',
+    },
+    {
+      imports: ['*'],
+      from: 'b.graphql',
+    },
+  ])
 })
 
 test('Module in node_modules', async () => {
-    const b = `\
-# import lower from './lower.graphql'
-type B {
-  id: ID!
-  nickname: String! @lower
-}
-`
-    const lower = `\
-directive @lower on FIELD_DEFINITION
-`
-    const expectedSDL = `\
-type A {
-  id: ID!
-  author: B!
-}
-
-type B {
-  id: ID!
-  nickname: String! @lower
-}
-
-directive @lower on FIELD_DEFINITION
-`
-    const moduleDir = 'node_modules/graphql-import-test'
-    if (!fs.existsSync(moduleDir)) {
-        fs.mkdirSync(moduleDir)
-    }
+  const b = `\
+        # import lower from './lower.graphql'
+        type B {
+          id: ID!
+          nickname: String! @lower
+        }
+        `
+  const lower = `\
+        directive @lower on FIELD_DEFINITION
+        `
+  const expectedSDL = `\
+        type A {
+          id: ID!
+          author: B!
+        }
+        
+        type B {
+          id: ID!
+          nickname: String! @lower
+        }
+        
+        directive @lower on FIELD_DEFINITION
+        `
+  const moduleDir = 'node_modules/graphql-import-test'
+  if (!fs.existsSync(moduleDir)) {
+    fs.mkdirSync(moduleDir)
+  }
 
-    fs.writeFileSync(moduleDir + '/b.graphql', b)
-    fs.writeFileSync(moduleDir + '/lower.graphql', lower)
-    expect(await importSchema('tests/loaders/schema/fixtures/import-module/a.graphql')).toBe(expectedSDL)
+  fs.writeFileSync(moduleDir + '/b.graphql', b)
+  fs.writeFileSync(moduleDir + '/lower.graphql', lower)
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-module/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: imports only', async () => {
-    const expectedSDL = `\
-type Query {
-  first: String
-  second: Float
-  third: String
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/imports-only/all.graphql')).toBe(expectedSDL);
+  const expectedSDL = `\
+        type Query {
+          first: String
+          second: Float
+          third: String
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/imports-only/all.graphql'))).toBe(normalizeDocumentString(expectedSDL));
 })
 
 test('importSchema: import .gql extension', async () => {
-    const expectedSDL = `\
-type A {
-  id: ID!
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/import-gql/a.gql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          id: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-gql/a.gql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: import duplicate', async () => {
-    const expectedSDL = `\
-type Query {
-  first: String
-  second: Float
-  third: String
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/import-duplicate/all.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type Query {
+          first: String
+          second: Float
+          third: String
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-duplicate/all.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: import nested', async () => {
-    const expectedSDL = `\
-type Query {
-  first: String
-  second: Float
-  third: String
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/import-nested/all.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type Query {
+          first: String
+          second: Float
+          third: String
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-nested/all.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: field types', async () => {
-    const expectedSDL = `\
-type A {
-  first: String
-  second: Float
-  b: B
-}
-
-type B {
-  c: C
-  hello: String!
-}
-
-type C {
-  id: ID!
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/field-types/a.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          first: String
+          second: Float
+          b: B
+        }
+        
+        type B {
+          c: C
+          hello: String!
+        }
+        
+        type C {
+          id: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/field-types/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: enums', async () => {
-    const expectedSDL = `\
-type A {
-  first: String
-  second: Float
-  b: B
-}
-
-enum B {
-  B1
-  B2
-  B3
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/enums/a.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          first: String
+          second: Float
+          b: B
+        }
+        
+        enum B {
+          B1
+          B2
+          B3
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/enums/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: import all', async () => {
-    const expectedSDL = `\
-type A {
-  first: String
-  second: Float
-  b: B
-}
-
-type B {
-  hello: String!
-  c1: C1
-  c2: C2
-}
-
-type C1 {
-  id: ID!
-}
-
-type C2 {
-  id: ID!
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/import-all/a.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          first: String
+          second: Float
+          b: B
+        }
+        
+        type B {
+          hello: String!
+          c1: C1
+          c2: C2
+        }
+        
+        type C1 {
+          id: ID!
+        }
+        
+        type C2 {
+          id: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-all/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: import all from objects', async () => {
-    const schemaC = `
-    type C1 {
-      id: ID!
-    }
-
-    type C2 {
-      id: ID!
-    }
-
-    type C3 {
-      id: ID!
-    }
-`
-
-    const schemaB = `
-    # import * from 'schemaC'
-    type B {
-      hello: String!
-      c1: C1
-      c2: C2
-    }
-`
-
-    const schemaA = `
-    # import B from 'schemaB'
-    type A {
-      # test 1
-      first: String
-      second: Float
-      b: B
-    }
-`
-
-    const schemas = {
-        schemaA,
-        schemaB,
-        schemaC,
-    }
-
-    const expectedSDL = `\
-type A {
-  first: String
-  second: Float
-  b: B
-}
-
-type B {
-  hello: String!
-  c1: C1
-  c2: C2
-}
-
-type C1 {
-  id: ID!
-}
+  const schemaC = `
+            type C1 {
+              id: ID!
+            }
+        
+            type C2 {
+              id: ID!
+            }
+        
+            type C3 {
+              id: ID!
+            }
+        `
+
+  const schemaB = `
+            # import * from 'schemaC'
+            type B {
+              hello: String!
+              c1: C1
+              c2: C2
+            }
+        `
+
+  const schemaA = `
+            # import B from 'schemaB'
+            type A {
+              # test 1
+              first: String
+              second: Float
+              b: B
+            }
+        `
+
+  const schemas = {
+    schemaA,
+    schemaB,
+    schemaC,
+  }
 
-type C2 {
-  id: ID!
-}
-`
-    expect(await importSchema(schemaA, schemas)).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          first: String
+          second: Float
+          b: B
+        }
+        
+        type B {
+          hello: String!
+          c1: C1
+          c2: C2
+        }
+        
+        type C1 {
+          id: ID!
+        }
+        
+        type C2 {
+          id: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema(schemaA, schemas))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test(`importSchema: single object schema`, async () => {
-    const schemaA = `
-    type A {
-      field: String
-    }
-`
-
-    const expectedSDL = `\
-type A {
-  field: String
-}
-`
+  const schemaA = `
+            type A {
+              field: String
+            }
+        `
+
+  const expectedSDL = `\
+        type A {
+          field: String
+        }
+        `
 
-    expect(await importSchema(schemaA)).toBe(expectedSDL)
+  expect(normalizeDocumentString(await importSchema(schemaA))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test(`importSchema: import all mix 'n match`, async () => {
-    const schemaB = `
-    # import C1, C2 from 'tests/loaders/schema/fixtures/import-all/c.graphql'
-    type B {
-      hello: String!
-      c1: C1
-      c2: C2
-    }
-`
-
-    const schemaA = `
-    # import * from "schemaB"
-    type A {
-      # test 1
-      first: String
-      second: Float
-      b: B
-    }
-`
-
-    const schemas = {
-        schemaB,
-    }
-
-    const expectedSDL = `\
-type A {
-  first: String
-  second: Float
-  b: B
-}
-
-type C1 {
-  id: ID!
-}
-
-type C2 {
-  id: ID!
-}
-
-type B {
-  hello: String!
-  c1: C1
-  c2: C2
-}
-`
+  const schemaB = `
+            # import C1, C2 from 'tests/loaders/schema/fixtures/import-all/c.graphql'
+            type B {
+              hello: String!
+              c1: C1
+              c2: C2
+            }
+        `
+
+  const schemaA = `
+            # import * from "schemaB"
+            type A {
+              # test 1
+              first: String
+              second: Float
+              b: B
+            }
+        `
+
+  const schemas = {
+    schemaB,
+  }
 
-    expect(await importSchema(schemaA, schemas)).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          first: String
+          second: Float
+          b: B
+        }
+        
+        type C1 {
+          id: ID!
+        }
+        
+        type C2 {
+          id: ID!
+        }
+        
+        type B {
+          hello: String!
+          c1: C1
+          c2: C2
+        }
+        `
+
+  expect(normalizeDocumentString(await importSchema(schemaA, schemas))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test(`importSchema: import all mix 'n match 2`, async () => {
-    const schemaA = `
-    # import * from "tests/loaders/schema/fixtures/import-all/b.graphql"
-    type A {
-      # test 1
-      first: String
-      second: Float
-      b: B
-    }
-`
-
-    const expectedSDL = `\
-type A {
-  first: String
-  second: Float
-  b: B
-}
-
-type B {
-  hello: String!
-  c1: C1
-  c2: C2
-}
-
-type C1 {
-  id: ID!
-}
-
-type C2 {
-  id: ID!
-}
-`
-    expect(await importSchema(schemaA)).toBe(expectedSDL)
+  const schemaA = `
+            # import * from "tests/loaders/schema/fixtures/import-all/b.graphql"
+            type A {
+              # test 1
+              first: String
+              second: Float
+              b: B
+            }
+        `
+
+  const expectedSDL = `\
+        type A {
+          first: String
+          second: Float
+          b: B
+        }
+        
+        type B {
+          hello: String!
+          c1: C1
+          c2: C2
+        }
+        
+        type C1 {
+          id: ID!
+        }
+        
+        type C2 {
+          id: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema(schemaA))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test(`importSchema: import all - exclude Query/Mutation/Subscription type`, async () => {
-    const schemaC = `
-    type C1 {
-      id: ID!
-    }
-
-    type C2 {
-      id: ID!
-    }
-
-    type C3 {
-      id: ID!
-    }
-
-    type Query {
-      hello: String!
-    }
-
-    type Mutation {
-      hello: String!
-    }
-
-    type Subscription {
-      hello: String!
-    }
-
-    `
-
-    const schemaB = `
-    # import * from 'schemaC'
-    type B {
-      hello: String!
-      c1: C1
-      c2: C2
-    }
-`
-
-    const schemaA = `
-    # import B from 'schemaB'
-    type Query {
-      greet: String!
-    }
-
-    type A {
-      # test 1
-      first: String
-      second: Float
-      b: B
-    }
-`
-
-    const schemas = {
-        schemaA,
-        schemaB,
-        schemaC,
-    }
-
-    const expectedSDL = `\
-type Query {
-  greet: String!
-}
-
-type A {
-  first: String
-  second: Float
-  b: B
-}
-
-type B {
-  hello: String!
-  c1: C1
-  c2: C2
-}
-
-type C1 {
-  id: ID!
-}
+  const schemaC = `
+            type C1 {
+              id: ID!
+            }
+        
+            type C2 {
+              id: ID!
+            }
+        
+            type C3 {
+              id: ID!
+            }
+        
+            type Query {
+              hello: String!
+            }
+        
+            type Mutation {
+              hello: String!
+            }
+        
+            type Subscription {
+              hello: String!
+            }
+        
+            `
+
+  const schemaB = `
+            # import * from 'schemaC'
+            type B {
+              hello: String!
+              c1: C1
+              c2: C2
+            }
+        `
+
+  const schemaA = `
+            # import B from 'schemaB'
+            type Query {
+              greet: String!
+            }
+        
+            type A {
+              # test 1
+              first: String
+              second: Float
+              b: B
+            }
+        `
+
+  const schemas = {
+    schemaA,
+    schemaB,
+    schemaC,
+  }
 
-type C2 {
-  id: ID!
-}
-`
-    expect(await importSchema(schemaA, schemas)).toBe(expectedSDL)
+  const expectedSDL = `\
+        type Query {
+          greet: String!
+        }
+        
+        type A {
+          first: String
+          second: Float
+          b: B
+        }
+        
+        type B {
+          hello: String!
+          c1: C1
+          c2: C2
+        }
+        
+        type C1 {
+          id: ID!
+        }
+        
+        type C2 {
+          id: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema(schemaA, schemas))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: scalar', async () => {
-    const expectedSDL = `\
-type A {
-  b: B
-}
-
-scalar B
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/scalar/a.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          b: B
+        }
+        
+        scalar B
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/scalar/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: directive', async () => {
-    const expectedSDL = `\
-type A {
-  first: String @upper
-  second: String @withB @deprecated
-}
-
-scalar B
-
-directive @upper on FIELD_DEFINITION
-
-directive @withB(argB: B) on FIELD_DEFINITION
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/directive/a.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          first: String @upper
+          second: String @withB @deprecated
+        }
+        
+        scalar B
+        
+        directive @upper on FIELD_DEFINITION
+        
+        directive @withB(argB: B) on FIELD_DEFINITION
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: key directive', async () => {
-    const expectedSDL = `\
-scalar UPC
-
-type Product @key(fields: "upc") {
-  upc: UPC!
-  name: String
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/directive/c.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        scalar UPC
+        
+        type Product @key(fields: "upc") {
+          upc: UPC!
+          name: String
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/c.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: multiple key directive', async () => {
-    const expectedSDL = `\
-scalar UPC
-
-scalar SKU
-
-type Product @key(fields: "upc") @key(fields: "sku") {
-  upc: UPC!
-  sku: SKU!
-  name: String
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/directive/e.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        scalar UPC
+        
+        scalar SKU
+        
+        type Product @key(fields: "upc") @key(fields: "sku") {
+          upc: UPC!
+          sku: SKU!
+          name: String
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/e.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: external directive', async () => {
-    const expectedSDL = `\
-type Review @key(fields: "id") {
-  product: Product @provides(fields: "name")
-}
-
-extend type Product @key(fields: "upc") {
-  upc: String @external
-  name: String @external
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/directive/f.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type Review @key(fields: "id") {
+          product: Product @provides(fields: "name")
+        }
+        
+        extend type Product @key(fields: "upc") {
+          upc: String @external
+          name: String @external
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/f.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: requires directive', async () => {
-    const expectedSDL = `\
-type Review {
-  id: ID
-}
-
-extend type User @key(fields: "id") {
-  id: ID! @external
-  email: String @external
-  reviews: [Review] @requires(fields: "email")
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/directive/g.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type Review {
+          id: ID
+        }
+        
+        extend type User @key(fields: "id") {
+          id: ID! @external
+          email: String @external
+          reviews: [Review] @requires(fields: "email")
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/g.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: interfaces', async () => {
-    const expectedSDL = `\
-type A implements B {
-  first: String
-  second: Float
-}
-
-interface B {
-  second: Float
-  c: [C!]!
-}
-
-type C {
-  c: ID!
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/interfaces/a.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A implements B {
+          first: String
+          second: Float
+        }
+        
+        interface B {
+          second: Float
+          c: [C!]!
+        }
+        
+        type C {
+          c: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/interfaces/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: interfaces-many', async () => {
-    const expectedSDL = `\
-type A implements B {
-  first: String
-  second: Float
-}
-
-interface B {
-  second: Float
-  c: [C!]!
-}
-
-type C implements D1 & D2 {
-  c: ID!
-}
-
-interface D1 {
-  d1: ID!
-}
-
-interface D2 {
-  d2: ID!
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/interfaces-many/a.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A implements B {
+          first: String
+          second: Float
+        }
+        
+        interface B {
+          second: Float
+          c: [C!]!
+        }
+        
+        type C implements D1 & D2 {
+          c: ID!
+        }
+        
+        interface D1 {
+          d1: ID!
+        }
+        
+        interface D2 {
+          d2: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/interfaces-many/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: interfaces-implements', async () => {
-    const expectedSDL = `\
-type A implements B {
-  id: ID!
-}
-
-interface B {
-  id: ID!
-}
-
-type B1 implements B {
-  id: ID!
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/interfaces-implements/a.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A implements B {
+          id: ID!
+        }
+        
+        interface B {
+          id: ID!
+        }
+        
+        type B1 implements B {
+          id: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/interfaces-implements/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: interfaces-implements-many', async () => {
-    const expectedSDL = `\
-type A implements B {
-  id: ID!
-}
-
-interface B {
-  id: ID!
-}
-
-type B1 implements B {
-  id: ID!
-}
-
-type B2 implements B {
-  id: ID!
-}
-`
-    expect(
-        await importSchema('tests/loaders/schema/fixtures/interfaces-implements-many/a.graphql')
-    ).toBe(
-        expectedSDL,
-    )
+  const expectedSDL = `\
+        type A implements B {
+          id: ID!
+        }
+        
+        interface B {
+          id: ID!
+        }
+        
+        type B1 implements B {
+          id: ID!
+        }
+        
+        type B2 implements B {
+          id: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/interfaces-implements-many/a.graphql'))
+  ).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: input types', async () => {
-    const expectedSDL = `\
-type A {
-  first(b: B): String
-  second: Float
-}
-
-input B {
-  hello: [C!]!
-}
-
-input C {
-  id: ID!
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/input-types/a.graphql')).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          first(b: B): String
+          second: Float
+        }
+        
+        input B {
+          hello: [C!]!
+        }
+        
+        input C {
+          id: ID!
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/input-types/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: complex test', async () => {
-    expect(() => {
-        importSchema('tests/loaders/schema/fixtures/complex/a.graphql')
-    }).not.toThrow();
+  try {
+    const a = await importSchema('tests/loaders/schema/fixtures/complex/a.graphql')
+    expect(a).toBeTruthy();
+  } catch(e) {
+    expect(e).toBeFalsy();
+  }
 })
 
-test.skip('circular imports', async () => {
-    const expectedSDL = `\
-type A {
-  first: String
-  second: Float
-  b: B
-}
-
-type C1 {
-  id: ID!
-}
-
-type C2 {
-  id: ID!
-}
-
-type B {
-  hello: String!
-  c1: C1
-  c2: C2
-  a: A
-}
-`
-    const actualSDL = await importSchema('tests/loaders/schema/fixtures/circular/a.graphql')
-    expect(actualSDL).toBe(expectedSDL)
+test('circular imports', async () => {
+  const expectedSDL = `\
+        type A {
+          first: String
+          second: Float
+          b: B
+        }
+        
+        type C1 {
+          id: ID!
+        }
+        
+        type C2 {
+          id: ID!
+        }
+        
+        type B {
+          hello: String!
+          c1: C1
+          c2: C2
+          a: A
+        }
+        `
+  const actualSDL = await importSchema('tests/loaders/schema/fixtures/circular/a.graphql')
+  expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('related types', async () => {
-    const expectedSDL = `\
-type A {
-  first: String
-  second: Float
-  b: B
-}
-
-type B {
-  hello: String!
-  c1: C
-}
-
-type C {
-  field: String
-}
-`
-    const actualSDL = await importSchema('tests/loaders/schema/fixtures/related-types/a.graphql')
-    expect(actualSDL).toBe(expectedSDL)
+  const expectedSDL = `\
+        type A {
+          first: String
+          second: Float
+          b: B
+        }
+        
+        type B {
+          hello: String!
+          c1: C
+        }
+        
+        type C {
+          field: String
+        }
+        `
+  const actualSDL = await importSchema('tests/loaders/schema/fixtures/related-types/a.graphql')
+  expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('relative paths', async () => {
-    const expectedSDL = `\
-type Query {
-  feed: [Post!]!
-}
-
-type Mutation {
-  createDraft(title: String!, text: String): Post
-  publish(id: ID!): Post
-}
-
-type Post implements Node {
-  id: ID!
-  isPublished: Boolean!
-  title: String!
-  text: String!
-}
-
-interface Node {
-  id: ID!
-}
-`
-    const actualSDL = await importSchema('tests/loaders/schema/fixtures/relative-paths/src/schema.graphql')
-    expect(actualSDL).toBe(expectedSDL)
+  const expectedSDL = `\
+        type Query {
+          feed: [Post!]!
+        }
+        
+        type Mutation {
+          createDraft(title: String!, text: String): Post
+          publish(id: ID!): Post
+        }
+        
+        type Post implements Node {
+          id: ID!
+          isPublished: Boolean!
+          title: String!
+          text: String!
+        }
+        
+        interface Node {
+          id: ID!
+        }
+        `
+  const actualSDL = await importSchema('tests/loaders/schema/fixtures/relative-paths/src/schema.graphql')
+  expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('root field imports', async () => {
-    const expectedSDL = `\
-type Query {
-  posts(filter: PostFilter): [Post]
-}
-
-type Dummy {
-  field: String
-}
-
-type Post {
-  field1: String
-}
-
-input PostFilter {
-  field3: Int
-}
-`
-    const actualSDL = await importSchema('tests/loaders/schema/fixtures/root-fields/a.graphql')
-    expect(actualSDL).toBe(expectedSDL)
+  const expectedSDL = `\
+        type Query {
+          posts(filter: PostFilter): [Post]
+        }
+        
+        type Dummy {
+          field: String
+        }
+        
+        type Post {
+          field1: String
+        }
+        
+        input PostFilter {
+          field3: Int
+        }
+        `
+  const actualSDL = await importSchema('tests/loaders/schema/fixtures/root-fields/a.graphql')
+  expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('extend root field', async () => {
-    const expectedSDL = `\
-extend type Query {
-  me: User
-}
-
-type User @key(fields: "id") {
-  id: ID!
-  name: String
-}
-`
-    const actualSDL = await importSchema('tests/loaders/schema/fixtures/root-fields/c.graphql')
-    expect(actualSDL).toBe(expectedSDL)
+  const expectedSDL = `\
+        extend type Query {
+          me: User
+        }
+        
+        type User @key(fields: "id") {
+          id: ID!
+          name: String
+        }
+        `
+  const actualSDL = await importSchema('tests/loaders/schema/fixtures/root-fields/c.graphql')
+  expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('extend root field imports', async () => {
-    const expectedSDL = `\
-extend type Query {
-  me: User
-  post: Post
-}
-
-type Post {
-  id: ID!
-}
-
-type User @key(fields: "id") {
-  id: ID!
-  name: String
-}
-`
-    const actualSDL = await importSchema('tests/loaders/schema/fixtures/root-fields/d.graphql')
-    expect(actualSDL).toBe(expectedSDL)
+  const expectedSDL = `\
+        extend type Query {
+          me: User
+          post: Post
+        }
+        
+        type Post {
+          id: ID!
+        }
+        
+        type User @key(fields: "id") {
+          id: ID!
+          name: String
+        }
+        `
+  const actualSDL = await importSchema('tests/loaders/schema/fixtures/root-fields/d.graphql')
+  expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('merged root field imports', async () => {
-    const expectedSDL = `\
-type Query {
-  helloA: String
-  posts(filter: PostFilter): [Post]
-  hello: String
-}
-
-type Dummy {
-  field: String
-  field2: String
-}
-
-type Post {
-  field1: String
-}
-
-input PostFilter {
-  field3: Int
-}
-`
-    const actualSDL = await importSchema('tests/loaders/schema/fixtures/merged-root-fields/a.graphql')
-    expect(actualSDL).toBe(expectedSDL)
+  const expectedSDL = `\
+        type Query {
+          helloA: String
+          posts(filter: PostFilter): [Post]
+          hello: String
+        }
+        
+        type Dummy {
+          field: String
+          field2: String
+        }
+        
+        type Post {
+          field1: String
+        }
+        
+        input PostFilter {
+          field3: Int
+        }
+        `
+  const actualSDL = await importSchema('tests/loaders/schema/fixtures/merged-root-fields/a.graphql')
+  expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('global schema modules', async () => {
-    const shared = `
-    type Shared {
-      first: String
-    }
-
-  `
-    const expectedSDL = `\
-type A {
-  first: String
-  second: Shared
-}
-
-type Shared {
-  first: String
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/global/a.graphql', { shared } )).toBe(expectedSDL)
+  const shared = `
+            type Shared {
+              first: String
+            }
+        
+          `
+  const expectedSDL = `\
+        type A {
+          first: String
+          second: Shared
+        }
+        
+        type Shared {
+          first: String
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/global/a.graphql', { shared } ))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('missing type on type', async () => {
-    try {
-        await importSchema('tests/loaders/schema/fixtures/type-not-found/a.graphql');
-        throw new Error();
-    } catch (e) {
-        expect(e.message).toBe(`Field test: Couldn't find type Post in any of the schemas.`);
-    }
+  try {
+    await importSchema('tests/loaders/schema/fixtures/type-not-found/a.graphql');
+    throw new Error();
+  } catch (e) {
+    expect(e.message).toBe(`Field test: Couldn't find type Post in any of the schemas.`);
+  }
 
 })
 
 test('missing type on interface', async () => {
-    try {
-        await importSchema('tests/loaders/schema/fixtures/type-not-found/b.graphql');
-        throw new Error();
-    } catch (e) {
-        expect(e.message).toBe(`Field test: Couldn't find type Post in any of the schemas.`)
-    }
+  try {
+    await importSchema('tests/loaders/schema/fixtures/type-not-found/b.graphql');
+    throw new Error();
+  } catch (e) {
+    expect(e.message).toBe(`Field test: Couldn't find type Post in any of the schemas.`)
+  }
 
 })
 
 test('missing type on input type', async () => {
-    try {
-        await importSchema('tests/loaders/schema/fixtures/type-not-found/c.graphql');
-        throw new Error();
-    } catch (e) {
-        expect(e.message).toBe(`Field post: Couldn't find type Post in any of the schemas.`)
-    }
+  try {
+    await importSchema('tests/loaders/schema/fixtures/type-not-found/c.graphql');
+    throw new Error();
+  } catch (e) {
+    expect(e.message).toBe(`Field post: Couldn't find type Post in any of the schemas.`)
+  }
 
 })
 
 test('missing interface type', async () => {
 
-    try {
-        await importSchema('tests/loaders/schema/fixtures/type-not-found/d.graphql');
-        throw new Error();
-    } catch (e) {
-        expect(e.message).toBe(`Couldn't find interface MyInterface in any of the schemas.`)
-    }
+  try {
+    await importSchema('tests/loaders/schema/fixtures/type-not-found/d.graphql');
+    throw new Error();
+  } catch (e) {
+    expect(e.message).toBe(`Couldn't find interface MyInterface in any of the schemas.`)
+  }
 
 })
 
 test('missing union type', async () => {
 
-    try {
-        await importSchema('tests/loaders/schema/fixtures/type-not-found/e.graphql')
-        throw new Error();
-    } catch (e) {
-        expect(e.message).toBe(`Couldn't find type C in any of the schemas.`)
-    }
+  try {
+    await importSchema('tests/loaders/schema/fixtures/type-not-found/e.graphql')
+    throw new Error();
+  } catch (e) {
+    expect(e.message).toBe(`Couldn't find type C in any of the schemas.`)
+  }
 
 })
 
 test('missing type on input type', async () => {
 
-    try {
-        await importSchema('tests/loaders/schema/fixtures/type-not-found/f.graphql');
-        throw new Error();
-    } catch (e) {
-        expect(e.message).toBe(`Field myfield: Couldn't find type Post in any of the schemas.`)
-    }
+  try {
+    await importSchema('tests/loaders/schema/fixtures/type-not-found/f.graphql');
+    throw new Error();
+  } catch (e) {
+    expect(e.message).toBe(`Field myfield: Couldn't find type Post in any of the schemas.`)
+  }
 
 })
 
 test('missing type on directive', async () => {
 
-    try {
-        await importSchema('tests/loaders/schema/fixtures/type-not-found/g.graphql');
-        throw new Error();
-    } catch (e) {
-        expect(e.message).toBe(`Directive first: Couldn't find type first in any of the schemas.`)
-    }
+  try {
+    await importSchema('tests/loaders/schema/fixtures/type-not-found/g.graphql');
+    throw new Error();
+  } catch (e) {
+    expect(e.message).toBe(`Directive first: Couldn't find type first in any of the schemas.`)
+  }
 
 })
 
 test('import with collision', async () => {
-    // Local type gets preference over imported type
-    const expectedSDL = `\
-type User {
-  id: ID!
-  name: String!
-  intro: String
-}
-`
-    expect(await importSchema('tests/loaders/schema/fixtures/collision/a.graphql')).toBe(expectedSDL)
-})
-
-function stripWhitespaces(str: string): string {
-    return str.replace(/\s+/g, ' ').trim();
+  // Local type gets preference over imported type
+  const expectedSDL = `\
+        type User {
+          id: ID!
+          name: String!
+          intro: String
+        }
+        `
+  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/collision/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+})
+
+function normalizeDocumentString(doc: any): string {
+  if(typeof doc === 'string') {
+    doc = parse(doc.replace(/\s+/g, ' ').trim(), {noLocation: true});
+  }
+  doc.definitions = doc.definitions.sort((a,b) => {
+    const aStr = 'name' in a ? a.name.value : a.kind;
+    const bStr = 'name' in b ? b.name.value : b.kind;
+    return aStr.localeCompare(bStr);
+  })
+  return print(doc);
 }
 
 
 test('merged custom root fields imports', async () => {
-    const expectedSDL = stripWhitespaces(`\
-  type Query {
-    helloA: String
-    posts(filter: PostFilter): [Post]
-    hello: String
-  }
-  type Dummy {
-    field: String
-    field2: String
-  }
-  type Post {
-    field1: String
-  }
-  input PostFilter {
-    field3: Int
-  }
-  `);
-    const actualSDL = await importSchema('tests/loaders/schema/fixtures/merged-root-fields/a.graphql')
-    expect(stripWhitespaces(actualSDL)).toBe(stripWhitespaces(expectedSDL))
+  const expectedSDL = normalizeDocumentString(`\
+          type Query {
+            helloA: String
+            posts(filter: PostFilter): [Post]
+            hello: String
+          }
+          type Dummy {
+            field: String
+            field2: String
+          }
+          type Post {
+            field1: String
+          }
+          input PostFilter {
+            field3: Int
+          }
+          `);
+  const actualSDL = await importSchema('tests/loaders/schema/fixtures/merged-root-fields/a.graphql')
+  expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
\ No newline at end of file
diff --git a/packages/loaders/code-file/tests/load-from-code-file.spec.ts b/packages/loaders/code-file/tests/load-from-code-file.spec.ts
index 41a6abcc..469bf03e 100644
--- a/packages/loaders/code-file/tests/load-from-code-file.spec.ts
+++ b/packages/loaders/code-file/tests/load-from-code-file.spec.ts
@@ -1,26 +1,32 @@
 import { resolve } from 'path';
 import { CodeFileLoader } from '../src';
+import { parse } from 'graphql';
 
 describe('loadFromCodeFile', () => {
   const loader = new CodeFileLoader();
 
   it('Should throw an error when a document is loaded using AST and the document is not valid', async () => {
     try {
-      await loader.load('./tests/test-files/invalid-anon-doc.js', { noRequire: true });
-      expect(true).toBeFalsy();
+      const loaded = await loader.load('./tests/test-files/invalid-anon-doc.js', { noRequire: true });
+      const doc = parse(loaded.rawSDL);
+
+      expect(doc).toBeFalsy();
     } catch (e) {
       expect(e.message).toBe('Syntax Error: Unexpected Name "InvalidGetUser"');
     }
   });
 
   it('should load a vaild file', async () => {
-    const doc = await loader.load('./tests/test-files/valid-doc.js', { noRequire: true });
+    const loaded = await loader.load('./tests/test-files/valid-doc.js', { noRequire: true });
+    const doc = parse(loaded.rawSDL);
 
-    expect(doc.document.kind).toEqual('Document');
+    expect(doc.kind).toEqual('Document');
   });
 
   it('should consider options.cwd', async () => {
-    const doc = await loader.load('valid-doc.js', { noRequire: true, cwd: resolve(__dirname, 'test-files') });
-    expect(doc.document.kind).toEqual('Document');
+    const loaded = await loader.load('valid-doc.js', { noRequire: true, cwd: resolve(__dirname, 'test-files') });
+    const doc = parse(loaded.rawSDL);
+
+    expect(doc.kind).toEqual('Document');
   });
 });

From 81bb2ad08af7153342132d14d7bca5d53b78cd13 Mon Sep 17 00:00:00 2001
From: Arda TANRIKULU <ardatanrikulu@gmail.com>
Date: Sun, 29 Dec 2019 19:29:36 +0300
Subject: [PATCH 4/8] Use cache instead of preresolvedTypeDefs

---
 packages/core/src/import-parser/index.ts      |  4 +-
 packages/core/src/load-typedefs.ts            |  4 -
 .../loaders/schema/import-schema.spec.ts      | 86 ++++++++++---------
 3 files changed, 46 insertions(+), 48 deletions(-)

diff --git a/packages/core/src/import-parser/index.ts b/packages/core/src/import-parser/index.ts
index 01da1487..223e239d 100644
--- a/packages/core/src/import-parser/index.ts
+++ b/packages/core/src/import-parser/index.ts
@@ -6,7 +6,7 @@ import { LoadSchemaOptions } from '../schema';
 
 import { completeDefinitionPool, ValidDefinitionNode } from './definition';
 import { realpathSync } from 'fs';
-import { join, dirname } from 'path';
+import { join, dirname, resolve } from 'path';
 import { Source } from '@graphql-toolkit/common';
 
 /**
@@ -194,7 +194,7 @@ export async function collectDefinitions(imports: string[], documentSource: Sour
   await Promise.all(
     rawModules.map(async m => {
       // If it was not yet processed (in case of circular dependencies)
-      const moduleFilePath = resolveModuleFilePath(documentSource.location, m.from);
+      const moduleFilePath = resolveModuleFilePath(resolve(options.cwd, documentSource.location), m.from);
 
       const processedFile = options.processedFiles.get(moduleFilePath);
       if (!processedFile || !processedFile.find(rModule => isEqual(rModule, m))) {
diff --git a/packages/core/src/load-typedefs.ts b/packages/core/src/load-typedefs.ts
index 9dc38d00..585aa9e9 100644
--- a/packages/core/src/load-typedefs.ts
+++ b/packages/core/src/load-typedefs.ts
@@ -16,7 +16,6 @@ export type LoadTypedefsOptions<ExtraConfig = { [key: string]: any }> = SingleFi
     loaders: Loader[];
     filterKinds?: string[];
     ignore?: string | string[];
-    preresolvedTypeDefs?: { [key: string]: string };
     sort?: boolean;
     skipGraphQLImport?: boolean;
     forceGraphQLImport?: boolean;
@@ -263,9 +262,6 @@ export async function loadSingleFile(pointer: string, options: LoadTypedefsOptio
   if (pointer in options.cache) {
     return options.cache[pointer];
   }
-  if (options.preresolvedTypeDefs && pointer in options.preresolvedTypeDefs) {
-    return parseGraphQLSDL(pointer, options.preresolvedTypeDefs[pointer], options);
-  }
   try {
     for (const loader of options.loaders) {
       const canLoad = await loader.canLoad(pointer, options);
diff --git a/packages/core/tests/loaders/schema/import-schema.spec.ts b/packages/core/tests/loaders/schema/import-schema.spec.ts
index 2fb2abdd..b63502e4 100644
--- a/packages/core/tests/loaders/schema/import-schema.spec.ts
+++ b/packages/core/tests/loaders/schema/import-schema.spec.ts
@@ -1,12 +1,13 @@
 import { parseImportLine, parseSDL, loadTypedefs, LoadTypedefsOptions, OPERATION_KINDS } from '@graphql-toolkit/core';
 import * as fs from 'fs'
-import { print, DocumentNode, Kind } from 'graphql';
+import { print } from 'graphql';
 import { JsonFileLoader } from '@graphql-toolkit/json-file-loader';
 import { UrlLoader } from '@graphql-toolkit/url-loader';
 import { CodeFileLoader } from '@graphql-toolkit/code-file-loader';
 import { GraphQLFileLoader } from '@graphql-toolkit/graphql-file-loader';
-import { mergeTypeDefs } from '@graphql-toolkit/schema-merging';
 import { parse } from 'graphql';
+import { parseGraphQLSDL } from '@graphql-toolkit/common';
+import { mergeTypeDefs } from '@graphql-toolkit/schema-merging';
 
 const importSchema = (
   schema: string, schemas?: { [name: string]: string }, options?: LoadTypedefsOptions
@@ -15,9 +16,10 @@ const importSchema = (
     schema, {
     loaders: [new UrlLoader(), new JsonFileLoader(), new GraphQLFileLoader(), new CodeFileLoader()],
     filterKinds: OPERATION_KINDS,
-    preresolvedTypeDefs: schemas,
+    cache: schemas ? Object.keys(schemas).reduce((prev, location) => Object.assign(prev, { [location]: parseGraphQLSDL(location, schemas[location], options)}), {}) : {},
     sort: false,
     forceGraphQLImport: true,
+    cwd: __dirname,
     ...options,
   }).then(r => print(mergeTypeDefs(r.map(r => r.document), { useSchemaDefinition: false })));
 
@@ -123,7 +125,7 @@ test('Module in node_modules', async () => {
 
   fs.writeFileSync(moduleDir + '/b.graphql', b)
   fs.writeFileSync(moduleDir + '/lower.graphql', lower)
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-module/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/import-module/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: imports only', async () => {
@@ -134,7 +136,7 @@ test('importSchema: imports only', async () => {
           third: String
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/imports-only/all.graphql'))).toBe(normalizeDocumentString(expectedSDL));
+  expect(normalizeDocumentString(await importSchema('./fixtures/imports-only/all.graphql'))).toBe(normalizeDocumentString(expectedSDL));
 })
 
 test('importSchema: import .gql extension', async () => {
@@ -143,7 +145,7 @@ test('importSchema: import .gql extension', async () => {
           id: ID!
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-gql/a.gql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/import-gql/a.gql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: import duplicate', async () => {
@@ -154,7 +156,7 @@ test('importSchema: import duplicate', async () => {
           third: String
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-duplicate/all.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/import-duplicate/all.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: import nested', async () => {
@@ -165,7 +167,7 @@ test('importSchema: import nested', async () => {
           third: String
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-nested/all.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/import-nested/all.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: field types', async () => {
@@ -185,7 +187,7 @@ test('importSchema: field types', async () => {
           id: ID!
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/field-types/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/field-types/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: enums', async () => {
@@ -202,7 +204,7 @@ test('importSchema: enums', async () => {
           B3
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/enums/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/enums/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: import all', async () => {
@@ -227,7 +229,7 @@ test('importSchema: import all', async () => {
           id: ID!
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/import-all/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/import-all/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: import all from objects', async () => {
@@ -312,7 +314,7 @@ test(`importSchema: single object schema`, async () => {
 
 test(`importSchema: import all mix 'n match`, async () => {
   const schemaB = `
-            # import C1, C2 from 'tests/loaders/schema/fixtures/import-all/c.graphql'
+            # import C1, C2 from './fixtures/import-all/c.graphql'
             type B {
               hello: String!
               c1: C1
@@ -361,7 +363,7 @@ test(`importSchema: import all mix 'n match`, async () => {
 
 test(`importSchema: import all mix 'n match 2`, async () => {
   const schemaA = `
-            # import * from "tests/loaders/schema/fixtures/import-all/b.graphql"
+            # import * from "./fixtures/import-all/b.graphql"
             type A {
               # test 1
               first: String
@@ -487,7 +489,7 @@ test('importSchema: scalar', async () => {
         
         scalar B
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/scalar/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/scalar/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: directive', async () => {
@@ -503,7 +505,7 @@ test('importSchema: directive', async () => {
         
         directive @withB(argB: B) on FIELD_DEFINITION
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/directive/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: key directive', async () => {
@@ -515,7 +517,7 @@ test('importSchema: key directive', async () => {
           name: String
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/c.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/directive/c.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: multiple key directive', async () => {
@@ -530,7 +532,7 @@ test('importSchema: multiple key directive', async () => {
           name: String
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/e.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/directive/e.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: external directive', async () => {
@@ -544,7 +546,7 @@ test('importSchema: external directive', async () => {
           name: String @external
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/f.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/directive/f.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: requires directive', async () => {
@@ -559,7 +561,7 @@ test('importSchema: requires directive', async () => {
           reviews: [Review] @requires(fields: "email")
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/directive/g.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/directive/g.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: interfaces', async () => {
@@ -578,7 +580,7 @@ test('importSchema: interfaces', async () => {
           c: ID!
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/interfaces/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/interfaces/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: interfaces-many', async () => {
@@ -605,7 +607,7 @@ test('importSchema: interfaces-many', async () => {
           d2: ID!
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/interfaces-many/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/interfaces-many/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: interfaces-implements', async () => {
@@ -622,7 +624,7 @@ test('importSchema: interfaces-implements', async () => {
           id: ID!
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/interfaces-implements/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/interfaces-implements/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: interfaces-implements-many', async () => {
@@ -643,7 +645,7 @@ test('importSchema: interfaces-implements-many', async () => {
           id: ID!
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/interfaces-implements-many/a.graphql'))
+  expect(normalizeDocumentString(await importSchema('./fixtures/interfaces-implements-many/a.graphql'))
   ).toBe(normalizeDocumentString(expectedSDL))
 })
 
@@ -662,12 +664,12 @@ test('importSchema: input types', async () => {
           id: ID!
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/input-types/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/input-types/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('importSchema: complex test', async () => {
   try {
-    const a = await importSchema('tests/loaders/schema/fixtures/complex/a.graphql')
+    const a = await importSchema('./fixtures/complex/a.graphql')
     expect(a).toBeTruthy();
   } catch(e) {
     expect(e).toBeFalsy();
@@ -697,7 +699,7 @@ test('circular imports', async () => {
           a: A
         }
         `
-  const actualSDL = await importSchema('tests/loaders/schema/fixtures/circular/a.graphql')
+  const actualSDL = await importSchema('./fixtures/circular/a.graphql')
   expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
@@ -718,7 +720,7 @@ test('related types', async () => {
           field: String
         }
         `
-  const actualSDL = await importSchema('tests/loaders/schema/fixtures/related-types/a.graphql')
+  const actualSDL = await importSchema('./fixtures/related-types/a.graphql')
   expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
@@ -744,7 +746,7 @@ test('relative paths', async () => {
           id: ID!
         }
         `
-  const actualSDL = await importSchema('tests/loaders/schema/fixtures/relative-paths/src/schema.graphql')
+  const actualSDL = await importSchema('./fixtures/relative-paths/src/schema.graphql')
   expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
@@ -766,7 +768,7 @@ test('root field imports', async () => {
           field3: Int
         }
         `
-  const actualSDL = await importSchema('tests/loaders/schema/fixtures/root-fields/a.graphql')
+  const actualSDL = await importSchema('./fixtures/root-fields/a.graphql')
   expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
@@ -781,7 +783,7 @@ test('extend root field', async () => {
           name: String
         }
         `
-  const actualSDL = await importSchema('tests/loaders/schema/fixtures/root-fields/c.graphql')
+  const actualSDL = await importSchema('./fixtures/root-fields/c.graphql')
   expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
@@ -801,7 +803,7 @@ test('extend root field imports', async () => {
           name: String
         }
         `
-  const actualSDL = await importSchema('tests/loaders/schema/fixtures/root-fields/d.graphql')
+  const actualSDL = await importSchema('./fixtures/root-fields/d.graphql')
   expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
@@ -826,7 +828,7 @@ test('merged root field imports', async () => {
           field3: Int
         }
         `
-  const actualSDL = await importSchema('tests/loaders/schema/fixtures/merged-root-fields/a.graphql')
+  const actualSDL = await importSchema('./fixtures/merged-root-fields/a.graphql')
   expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
 
@@ -847,12 +849,12 @@ test('global schema modules', async () => {
           first: String
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/global/a.graphql', { shared } ))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/global/a.graphql', { shared } ))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('missing type on type', async () => {
   try {
-    await importSchema('tests/loaders/schema/fixtures/type-not-found/a.graphql');
+    await importSchema('./fixtures/type-not-found/a.graphql');
     throw new Error();
   } catch (e) {
     expect(e.message).toBe(`Field test: Couldn't find type Post in any of the schemas.`);
@@ -862,7 +864,7 @@ test('missing type on type', async () => {
 
 test('missing type on interface', async () => {
   try {
-    await importSchema('tests/loaders/schema/fixtures/type-not-found/b.graphql');
+    await importSchema('./fixtures/type-not-found/b.graphql');
     throw new Error();
   } catch (e) {
     expect(e.message).toBe(`Field test: Couldn't find type Post in any of the schemas.`)
@@ -872,7 +874,7 @@ test('missing type on interface', async () => {
 
 test('missing type on input type', async () => {
   try {
-    await importSchema('tests/loaders/schema/fixtures/type-not-found/c.graphql');
+    await importSchema('./fixtures/type-not-found/c.graphql');
     throw new Error();
   } catch (e) {
     expect(e.message).toBe(`Field post: Couldn't find type Post in any of the schemas.`)
@@ -883,7 +885,7 @@ test('missing type on input type', async () => {
 test('missing interface type', async () => {
 
   try {
-    await importSchema('tests/loaders/schema/fixtures/type-not-found/d.graphql');
+    await importSchema('./fixtures/type-not-found/d.graphql');
     throw new Error();
   } catch (e) {
     expect(e.message).toBe(`Couldn't find interface MyInterface in any of the schemas.`)
@@ -894,7 +896,7 @@ test('missing interface type', async () => {
 test('missing union type', async () => {
 
   try {
-    await importSchema('tests/loaders/schema/fixtures/type-not-found/e.graphql')
+    await importSchema('./fixtures/type-not-found/e.graphql')
     throw new Error();
   } catch (e) {
     expect(e.message).toBe(`Couldn't find type C in any of the schemas.`)
@@ -905,7 +907,7 @@ test('missing union type', async () => {
 test('missing type on input type', async () => {
 
   try {
-    await importSchema('tests/loaders/schema/fixtures/type-not-found/f.graphql');
+    await importSchema('./fixtures/type-not-found/f.graphql');
     throw new Error();
   } catch (e) {
     expect(e.message).toBe(`Field myfield: Couldn't find type Post in any of the schemas.`)
@@ -916,7 +918,7 @@ test('missing type on input type', async () => {
 test('missing type on directive', async () => {
 
   try {
-    await importSchema('tests/loaders/schema/fixtures/type-not-found/g.graphql');
+    await importSchema('./fixtures/type-not-found/g.graphql');
     throw new Error();
   } catch (e) {
     expect(e.message).toBe(`Directive first: Couldn't find type first in any of the schemas.`)
@@ -933,7 +935,7 @@ test('import with collision', async () => {
           intro: String
         }
         `
-  expect(normalizeDocumentString(await importSchema('tests/loaders/schema/fixtures/collision/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/collision/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 function normalizeDocumentString(doc: any): string {
@@ -967,6 +969,6 @@ test('merged custom root fields imports', async () => {
             field3: Int
           }
           `);
-  const actualSDL = await importSchema('tests/loaders/schema/fixtures/merged-root-fields/a.graphql')
+  const actualSDL = await importSchema('./fixtures/merged-root-fields/a.graphql')
   expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
 })
\ No newline at end of file

From a75ec2cf86f31c50da864ee0038d08a10b9c6fa9 Mon Sep 17 00:00:00 2001
From: Arda TANRIKULU <ardatanrikulu@gmail.com>
Date: Mon, 30 Dec 2019 01:18:56 +0300
Subject: [PATCH 5/8] Support schema definition

---
 packages/core/src/import-parser/definition.ts | 33 +++++++++----
 packages/core/src/import-parser/index.ts      | 39 ++++++++-------
 .../fixtures/schema-definition/a.graphql      |  7 +++
 .../fixtures/schema-definition/b.graphql      |  3 ++
 .../fixtures/schema-definition/c.graphql      |  3 ++
 .../loaders/schema/import-schema.spec.ts      | 48 +++++++++++++++----
 .../src/typedefs-mergers/comments.ts          |  4 --
 .../src/typedefs-mergers/merge-typedefs.ts    |  5 +-
 8 files changed, 98 insertions(+), 44 deletions(-)
 create mode 100644 packages/core/tests/loaders/schema/fixtures/schema-definition/a.graphql
 create mode 100644 packages/core/tests/loaders/schema/fixtures/schema-definition/b.graphql
 create mode 100644 packages/core/tests/loaders/schema/fixtures/schema-definition/c.graphql

diff --git a/packages/core/src/import-parser/definition.ts b/packages/core/src/import-parser/definition.ts
index c2fb3293..005736ae 100644
--- a/packages/core/src/import-parser/definition.ts
+++ b/packages/core/src/import-parser/definition.ts
@@ -1,11 +1,11 @@
-import { keyBy, uniqBy, includes } from 'lodash';
-import { TypeDefinitionNode, TypeNode, NamedTypeNode, DirectiveNode, DirectiveDefinitionNode, InputValueDefinitionNode, FieldDefinitionNode } from 'graphql';
+import { keyBy, uniqBy, includes, reverse } from 'lodash';
+import { TypeDefinitionNode, TypeNode, NamedTypeNode, DirectiveNode, DirectiveDefinitionNode, InputValueDefinitionNode, FieldDefinitionNode, SchemaDefinitionNode } from 'graphql';
 
 const builtinTypes = ['String', 'Float', 'Int', 'Boolean', 'ID'];
 
 const builtinDirectives = ['deprecated', 'skip', 'include', 'key', 'external', 'requires', 'provides'];
 
-export type ValidDefinitionNode = DirectiveDefinitionNode | TypeDefinitionNode;
+export type ValidDefinitionNode = DirectiveDefinitionNode | TypeDefinitionNode | SchemaDefinitionNode;
 
 export interface DefinitionMap {
   [key: string]: ValidDefinitionNode;
@@ -23,9 +23,9 @@ export interface DefinitionMap {
 export function completeDefinitionPool(allDefinitions: ValidDefinitionNode[], definitionPool: ValidDefinitionNode[], newTypeDefinitions: ValidDefinitionNode[]): ValidDefinitionNode[] {
   const visitedDefinitions: { [name: string]: boolean } = {};
   while (newTypeDefinitions.length > 0) {
-    const schemaMap: DefinitionMap = keyBy(allDefinitions, d => d.name.value);
+    const schemaMap: DefinitionMap = keyBy(reverse(allDefinitions), d => ('name' in d ? d.name.value : 'schema'));
     const newDefinition = newTypeDefinitions.shift();
-    if (visitedDefinitions[newDefinition.name.value]) {
+    if (visitedDefinitions['name' in newDefinition ? newDefinition.name.value : 'schema']) {
       continue;
     }
 
@@ -33,7 +33,7 @@ export function completeDefinitionPool(allDefinitions: ValidDefinitionNode[], de
     newTypeDefinitions.push(...collectedTypedDefinitions);
     definitionPool.push(...collectedTypedDefinitions);
 
-    visitedDefinitions[newDefinition.name.value] = true;
+    visitedDefinitions['name' in newDefinition ? newDefinition.name.value : 'schema'] = true;
   }
 
   return uniqBy(definitionPool, 'name.value');
@@ -73,7 +73,7 @@ function collectNewTypeDefinitions(allDefinitions: ValidDefinitionNode[], defini
 
   if (newDefinition.kind === 'UnionTypeDefinition') {
     newDefinition.types.forEach(type => {
-      if (!definitionPool.some(d => d.name.value === type.name.value)) {
+      if (!definitionPool.some(d => 'name' in d && d.name.value === type.name.value)) {
         const typeName = type.name.value;
         const typeMatch = schemaMap[typeName];
         if (!typeMatch) {
@@ -87,7 +87,7 @@ function collectNewTypeDefinitions(allDefinitions: ValidDefinitionNode[], defini
   if (newDefinition.kind === 'ObjectTypeDefinition') {
     // collect missing interfaces
     newDefinition.interfaces.forEach(int => {
-      if (!definitionPool.some(d => d.name.value === int.name.value)) {
+      if (!definitionPool.some(d => 'name' in d && d.name.value === int.name.value)) {
         const interfaceName = int.name.value;
         const interfaceMatch = schemaMap[interfaceName];
         if (!interfaceMatch) {
@@ -105,6 +105,19 @@ function collectNewTypeDefinitions(allDefinitions: ValidDefinitionNode[], defini
     });
   }
 
+  if (newDefinition.kind === 'SchemaDefinition') {
+    newDefinition.operationTypes.forEach(operationType => {
+      if (!definitionPool.some(d => 'name' in d && d.name.value === operationType.type.name.value)) {
+        const typeName = operationType.type.name.value;
+        const typeMatch = schemaMap[typeName];
+        if (!typeMatch) {
+          throw new Error(`Couldn't find type ${typeName} in any of the schemas.`);
+        }
+        newTypeDefinitions.push(schemaMap[operationType.type.name.value]);
+      }
+    });
+  }
+
   return newTypeDefinitions;
 
   function collectNode(node: FieldDefinitionNode | InputValueDefinitionNode) {
@@ -112,7 +125,7 @@ function collectNewTypeDefinitions(allDefinitions: ValidDefinitionNode[], defini
     const nodeTypeName = nodeType.name.value;
 
     // collect missing argument input types
-    if (!definitionPool.some(d => d.name.value === nodeTypeName) && !includes(builtinTypes, nodeTypeName)) {
+    if (!definitionPool.some(d => 'name' in d && d.name.value === nodeTypeName) && !includes(builtinTypes, nodeTypeName)) {
       const argTypeMatch = schemaMap[nodeTypeName];
       if (!argTypeMatch) {
         throw new Error(`Field ${node.name.value}: Couldn't find type ${nodeTypeName} in any of the schemas.`);
@@ -125,7 +138,7 @@ function collectNewTypeDefinitions(allDefinitions: ValidDefinitionNode[], defini
 
   function collectDirective(directive: DirectiveNode) {
     const directiveName = directive.name.value;
-    if (!definitionPool.some(d => d.name.value === directiveName) && !includes(builtinDirectives, directiveName)) {
+    if (!definitionPool.some(d => 'name' in d && d.name.value === directiveName) && !includes(builtinDirectives, directiveName)) {
       const directive = schemaMap[directiveName] as DirectiveDefinitionNode;
       if (!directive) {
         throw new Error(`Directive ${directiveName}: Couldn't find type ${directiveName} in any of the schemas.`);
diff --git a/packages/core/src/import-parser/index.ts b/packages/core/src/import-parser/index.ts
index 223e239d..1d73c833 100644
--- a/packages/core/src/import-parser/index.ts
+++ b/packages/core/src/import-parser/index.ts
@@ -70,8 +70,6 @@ export function parseSDL(sdl: string): RawModule[] {
  * @returns Single bundled schema with all imported types
  */
 export async function processImportSyntax(documentSource: Source, options: LoadSchemaOptions): Promise<void> {
-  const mergeableTypes = options.mergeableTypes || [];
-  const allMergeableTypes = [...mergeableTypes, ...rootFields];
   let document = documentSource.document;
 
   // Recursively process the imports, starting by importing all types from the initial schema
@@ -81,24 +79,25 @@ export async function processImportSyntax(documentSource: Source, options: LoadS
   // Query, Mutation and Subscription should be merged
   // And should always be in the first set, to make sure they
   // are not filtered out.
-  const firstTypes = options.typeDefinitions.flat().filter(d => allMergeableTypes.includes(d.name.value));
-  const secondFirstTypes = options.typeDefinitions[0].filter(d => !allMergeableTypes.includes(d.name.value));
-  const otherFirstTypes = options.typeDefinitions
-    .slice(1)
-    .flat()
-    .filter(d => !allMergeableTypes.includes(d.name.value));
+  const firstTypes = options.typeDefinitions.flat();
+  const secondFirstTypes = options.typeDefinitions[0];
+  const otherFirstTypes = options.typeDefinitions.slice(1).flat();
 
   const firstSet = firstTypes.concat(secondFirstTypes, otherFirstTypes);
   const processedTypeNames: string[] = [];
   const mergedFirstTypes = [];
   for (const type of firstSet) {
-    if (!processedTypeNames.includes(type.name.value)) {
-      processedTypeNames.push(type.name.value);
-      mergedFirstTypes.push(type);
-    } else {
-      const existingType = mergedFirstTypes.find(t => t.name.value === type.name.value) as any;
-
-      existingType.fields = uniqBy(existingType.fields.concat((type as ObjectTypeDefinitionNode).fields), 'name.value');
+    if ('name' in type) {
+      if (!processedTypeNames.includes(type.name.value)) {
+        processedTypeNames.push(type.name.value);
+        mergedFirstTypes.push(type);
+      } else {
+        const existingType = mergedFirstTypes.find(t => t.name.value === type.name.value);
+
+        if ('fields' in existingType) {
+          (existingType as any).fields = uniqBy((existingType.fields as any).concat((type as ObjectTypeDefinitionNode).fields), 'name.value');
+        }
+      }
     }
   }
 
@@ -226,21 +225,21 @@ function filterImportedDefinitions(imports: string[], typeDefinitions: ReadonlyA
         allDefinitions
           .slice(0, allDefinitions.length - 1)
           .flat()
-          .filter(def => !rootFields.includes(def.name.value)),
-        def => def.name.value
+          .filter(def => 'name' in def && !rootFields.includes(def.name.value)),
+        def => 'name' in def && def.name.value
       );
       return typeDefinitions.filter(typeDef => typeDef.kind === 'ObjectTypeDefinition' && previousTypeDefinitions[typeDef.name.value]) as ObjectTypeDefinitionNode[];
     }
     return filteredDefinitions;
   } else {
     const importedTypes = imports.map(i => i.split('.')[0]);
-    const result = filteredDefinitions.filter(d => importedTypes.includes(d.name.value));
+    const result = filteredDefinitions.filter(d => 'name' in d && importedTypes.includes(d.name.value));
     const fieldImports = imports.filter(i => i.split('.').length > 1);
     const groupedFieldImports = groupBy(fieldImports, x => x.split('.')[0]);
 
     for (const rootType in groupedFieldImports) {
       const fields = groupedFieldImports[rootType].map(x => x.split('.')[1]);
-      const objectTypeDefinition: any = filteredDefinitions.find(def => def.name.value === rootType);
+      const objectTypeDefinition: any = filteredDefinitions.find(def => 'name' in def && def.name.value === rootType);
 
       if (objectTypeDefinition && 'fields' in objectTypeDefinition && !fields.includes('*')) {
         objectTypeDefinition.fields = objectTypeDefinition.fields.filter((f: any) => fields.includes(f.name.value) || fields.includes('*'));
@@ -260,4 +259,4 @@ function filterImportedDefinitions(imports: string[], typeDefinitions: ReadonlyA
 export function filterTypeDefinitions(definitions: ReadonlyArray<DefinitionNode>): ValidDefinitionNode[] {
   return definitions.filter(d => validKinds.includes(d.kind)).map(d => d as ValidDefinitionNode);
 }
-const validKinds = ['DirectiveDefinition', 'ScalarTypeDefinition', 'ObjectTypeDefinition', 'ObjectTypeExtension', 'InterfaceTypeDefinition', 'EnumTypeDefinition', 'UnionTypeDefinition', 'InputObjectTypeDefinition'];
+const validKinds = ['DirectiveDefinition', 'ScalarTypeDefinition', 'ObjectTypeDefinition', 'ObjectTypeExtension', 'InterfaceTypeDefinition', 'EnumTypeDefinition', 'UnionTypeDefinition', 'InputObjectTypeDefinition', 'SchemaDefinition'];
diff --git a/packages/core/tests/loaders/schema/fixtures/schema-definition/a.graphql b/packages/core/tests/loaders/schema/fixtures/schema-definition/a.graphql
new file mode 100644
index 00000000..1cf6fc24
--- /dev/null
+++ b/packages/core/tests/loaders/schema/fixtures/schema-definition/a.graphql
@@ -0,0 +1,7 @@
+# import MyQuery from './b.graphql'
+# import MyMutation from './c.graphql'
+
+schema {
+    query: MyQuery
+    mutation: MyMutation
+}
diff --git a/packages/core/tests/loaders/schema/fixtures/schema-definition/b.graphql b/packages/core/tests/loaders/schema/fixtures/schema-definition/b.graphql
new file mode 100644
index 00000000..8464455c
--- /dev/null
+++ b/packages/core/tests/loaders/schema/fixtures/schema-definition/b.graphql
@@ -0,0 +1,3 @@
+type MyQuery {
+    b: String
+}
diff --git a/packages/core/tests/loaders/schema/fixtures/schema-definition/c.graphql b/packages/core/tests/loaders/schema/fixtures/schema-definition/c.graphql
new file mode 100644
index 00000000..550355c1
--- /dev/null
+++ b/packages/core/tests/loaders/schema/fixtures/schema-definition/c.graphql
@@ -0,0 +1,3 @@
+type MyMutation {
+    c: String
+}
diff --git a/packages/core/tests/loaders/schema/import-schema.spec.ts b/packages/core/tests/loaders/schema/import-schema.spec.ts
index b63502e4..1e21f123 100644
--- a/packages/core/tests/loaders/schema/import-schema.spec.ts
+++ b/packages/core/tests/loaders/schema/import-schema.spec.ts
@@ -10,18 +10,18 @@ import { parseGraphQLSDL } from '@graphql-toolkit/common';
 import { mergeTypeDefs } from '@graphql-toolkit/schema-merging';
 
 const importSchema = (
-  schema: string, schemas?: { [name: string]: string }, options?: LoadTypedefsOptions
+  schema: string, schemas?: { [name: string]: string }, options?: LoadTypedefsOptions & Parameters<typeof mergeTypeDefs>[1]
 ) =>
   loadTypedefs(
     schema, {
     loaders: [new UrlLoader(), new JsonFileLoader(), new GraphQLFileLoader(), new CodeFileLoader()],
     filterKinds: OPERATION_KINDS,
-    cache: schemas ? Object.keys(schemas).reduce((prev, location) => Object.assign(prev, { [location]: parseGraphQLSDL(location, schemas[location], options)}), {}) : {},
+    cache: schemas ? Object.keys(schemas).reduce((prev, location) => Object.assign(prev, { [location]: parseGraphQLSDL(location, schemas[location], options) }), {}) : {},
     sort: false,
     forceGraphQLImport: true,
     cwd: __dirname,
     ...options,
-  }).then(r => print(mergeTypeDefs(r.map(r => r.document), { useSchemaDefinition: false })));
+  }).then(r => print(mergeTypeDefs(r.map(r => r.document), { useSchemaDefinition: false, ...options })));
 
 test('parseImportLine: parse single import', () => {
   expect(parseImportLine(`import A from "schema.graphql"`)).toEqual({
@@ -671,7 +671,7 @@ test('importSchema: complex test', async () => {
   try {
     const a = await importSchema('./fixtures/complex/a.graphql')
     expect(a).toBeTruthy();
-  } catch(e) {
+  } catch (e) {
     expect(e).toBeFalsy();
   }
 })
@@ -849,7 +849,7 @@ test('global schema modules', async () => {
           first: String
         }
         `
-  expect(normalizeDocumentString(await importSchema('./fixtures/global/a.graphql', { shared } ))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/global/a.graphql', { shared }))).toBe(normalizeDocumentString(expectedSDL))
 })
 
 test('missing type on type', async () => {
@@ -939,10 +939,10 @@ test('import with collision', async () => {
 })
 
 function normalizeDocumentString(doc: any): string {
-  if(typeof doc === 'string') {
-    doc = parse(doc.replace(/\s+/g, ' ').trim(), {noLocation: true});
+  if (typeof doc === 'string') {
+    doc = parse(doc.replace(/\s+/g, ' ').trim(), { noLocation: true });
   }
-  doc.definitions = doc.definitions.sort((a,b) => {
+  doc.definitions = doc.definitions.sort((a, b) => {
     const aStr = 'name' in a ? a.name.value : a.kind;
     const bStr = 'name' in b ? b.name.value : b.kind;
     return aStr.localeCompare(bStr);
@@ -971,4 +971,36 @@ test('merged custom root fields imports', async () => {
           `);
   const actualSDL = await importSchema('./fixtures/merged-root-fields/a.graphql')
   expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL))
+})
+
+test('respect schema definition', async () => {
+  const expectedSDL = normalizeDocumentString(`\
+    schema {
+      query: MyQuery
+      mutation: MyMutation
+    }
+
+    type MyQuery {
+      b: String
+    }
+
+    type MyMutation {
+      c: String
+    }
+  `);
+  const actualSDL = await importSchema('./fixtures/schema-definition/a.graphql')
+  expect(normalizeDocumentString(actualSDL)).toBe(normalizeDocumentString(expectedSDL));
+});
+
+test('import schema with shadowed type', async () => {
+  const expectedSDL = `\
+    type Query {
+      b: B!
+    }
+    type B {
+      x: X
+    }
+    scalar X
+`
+  expect(normalizeDocumentString(await importSchema('fixtures/import-shadowed/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
\ No newline at end of file
diff --git a/packages/schema-merging/src/typedefs-mergers/comments.ts b/packages/schema-merging/src/typedefs-mergers/comments.ts
index 020d9cb7..7e09dcd8 100644
--- a/packages/schema-merging/src/typedefs-mergers/comments.ts
+++ b/packages/schema-merging/src/typedefs-mergers/comments.ts
@@ -67,10 +67,6 @@ export function printComment(comment: string): string {
   return '\n# ' + comment.replace(/\n/g, '\n # ');
 }
 
-export function printWithComments(doc: DocumentNode): string {
-  return print(doc);
-}
-
 /**
  * Copyright (c) 2015-present, Facebook, Inc.
  *
diff --git a/packages/schema-merging/src/typedefs-mergers/merge-typedefs.ts b/packages/schema-merging/src/typedefs-mergers/merge-typedefs.ts
index 4cd716f4..006512dd 100644
--- a/packages/schema-merging/src/typedefs-mergers/merge-typedefs.ts
+++ b/packages/schema-merging/src/typedefs-mergers/merge-typedefs.ts
@@ -18,7 +18,7 @@ import {
 } from 'graphql';
 import { isGraphQLSchema, isSourceTypes, isStringTypes, isSchemaDefinition } from './utils';
 import { MergedResultMap, mergeGraphQLNodes } from './merge-nodes';
-import { resetComments, printWithComments } from './comments';
+import { resetComments } from './comments';
 import { fixSchemaAst } from '@graphql-toolkit/common';
 
 type Omit<T, K extends keyof any> = Pick<T, Exclude<keyof T, K>>;
@@ -105,7 +105,7 @@ export function mergeTypeDefs(types: Array<string | Source | DocumentNode | Grap
   let result: any;
 
   if (config && config.commentDescriptions) {
-    result = printWithComments(doc);
+    result = print(doc);
   } else {
     result = doc;
   }
@@ -224,6 +224,7 @@ export function mergeGraphQLTypes(types: Array<string | Source | DocumentNode |
       subscription: null,
     }
   );
+
   const mergedNodes: MergedResultMap = mergeGraphQLNodes(allNodes, config);
   const allTypes = Object.keys(mergedNodes);
   if (config && config.sort) {

From b8d16511487feece953063eeb81eec23817201d4 Mon Sep 17 00:00:00 2001
From: Arda TANRIKULU <ardatanrikulu@gmail.com>
Date: Mon, 30 Dec 2019 01:30:03 +0300
Subject: [PATCH 6/8] Fix comments

---
 packages/schema-merging/src/typedefs-mergers/comments.ts      | 2 +-
 .../schema-merging/src/typedefs-mergers/merge-typedefs.ts     | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/schema-merging/src/typedefs-mergers/comments.ts b/packages/schema-merging/src/typedefs-mergers/comments.ts
index 7e09dcd8..753ced5f 100644
--- a/packages/schema-merging/src/typedefs-mergers/comments.ts
+++ b/packages/schema-merging/src/typedefs-mergers/comments.ts
@@ -145,7 +145,7 @@ function printBlockString(value: string, isDescription: boolean) {
  * Converts an AST into a string, using one set of reasonable
  * formatting rules.
  */
-function print(ast: ASTNode) {
+export function printWithComments(ast: ASTNode) {
   return visit(ast, {
     leave: {
       Name: node => node.value,
diff --git a/packages/schema-merging/src/typedefs-mergers/merge-typedefs.ts b/packages/schema-merging/src/typedefs-mergers/merge-typedefs.ts
index 006512dd..46aff29f 100644
--- a/packages/schema-merging/src/typedefs-mergers/merge-typedefs.ts
+++ b/packages/schema-merging/src/typedefs-mergers/merge-typedefs.ts
@@ -18,7 +18,7 @@ import {
 } from 'graphql';
 import { isGraphQLSchema, isSourceTypes, isStringTypes, isSchemaDefinition } from './utils';
 import { MergedResultMap, mergeGraphQLNodes } from './merge-nodes';
-import { resetComments } from './comments';
+import { resetComments, printWithComments } from './comments';
 import { fixSchemaAst } from '@graphql-toolkit/common';
 
 type Omit<T, K extends keyof any> = Pick<T, Exclude<keyof T, K>>;
@@ -105,7 +105,7 @@ export function mergeTypeDefs(types: Array<string | Source | DocumentNode | Grap
   let result: any;
 
   if (config && config.commentDescriptions) {
-    result = print(doc);
+    result = printWithComments(doc);
   } else {
     result = doc;
   }

From 6071fa0f7a4f87405f305a514a5e0d5566fa5975 Mon Sep 17 00:00:00 2001
From: Arda TANRIKULU <ardatanrikulu@gmail.com>
Date: Mon, 30 Dec 2019 01:38:56 +0300
Subject: [PATCH 7/8] Add tests for shadowed variable

---
 packages/core/package.json                                   | 1 -
 packages/core/src/load-typedefs.ts                           | 5 +++--
 .../tests/loaders/schema/fixtures/import-shadowed/a.graphql  | 5 +++++
 .../tests/loaders/schema/fixtures/import-shadowed/b.graphql  | 5 +++++
 .../tests/loaders/schema/fixtures/import-shadowed/c.graphql  | 4 ++++
 packages/core/tests/loaders/schema/import-schema.spec.ts     | 2 +-
 6 files changed, 18 insertions(+), 4 deletions(-)
 create mode 100644 packages/core/tests/loaders/schema/fixtures/import-shadowed/a.graphql
 create mode 100644 packages/core/tests/loaders/schema/fixtures/import-shadowed/b.graphql
 create mode 100644 packages/core/tests/loaders/schema/fixtures/import-shadowed/c.graphql

diff --git a/packages/core/package.json b/packages/core/package.json
index 59f14765..99b19102 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -46,7 +46,6 @@
     "@graphql-toolkit/schema-merging": "0.7.5",
     "aggregate-error": "3.0.1",
     "globby": "10.0.1",
-    "graphql-import": "0.7.1",
     "is-glob": "4.0.1",
     "tslib": "1.10.0",
     "valid-url": "1.0.9",
diff --git a/packages/core/src/load-typedefs.ts b/packages/core/src/load-typedefs.ts
index 585aa9e9..d80835f8 100644
--- a/packages/core/src/load-typedefs.ts
+++ b/packages/core/src/load-typedefs.ts
@@ -1,4 +1,4 @@
-import { GraphQLSchema, parse, Kind, Source as GraphQLSource, print } from 'graphql';
+import { GraphQLSchema, parse, Kind, Source as GraphQLSource } from 'graphql';
 import { Source, asArray, isDocumentString, debugLog, fixWindowsPath, printSchemaWithDirectives, parseGraphQLSDL, fixSchemaAst, SingleFileOptions, Loader } from '@graphql-toolkit/common';
 import { join } from 'path';
 import isGlob from 'is-glob';
@@ -6,6 +6,7 @@ import globby from 'globby';
 import { filterKind } from './filter-document-kind';
 import { RawModule, processImportSyntax, isEmptySDL } from './import-parser';
 import { ValidDefinitionNode } from './import-parser/definition';
+import { printWithComments } from '@graphql-toolkit/schema-merging';
 
 export type LoadTypedefsOptions<ExtraConfig = { [key: string]: any }> = SingleFileOptions &
   ExtraConfig & {
@@ -237,7 +238,7 @@ export async function loadTypedefs<AdditionalConfig = {}>(pointerOrPointers: Unn
             resultSource.document = filterKind(resultSource.document, options.filterKinds);
           }
           if (!resultSource.rawSDL) {
-            resultSource.rawSDL = print(resultSource.document);
+            resultSource.rawSDL = printWithComments(resultSource.document);
           }
           if (options.forceGraphQLImport || (!options.skipGraphQLImport && /^\#.*import /i.test(resultSource.rawSDL.trimLeft()))) {
             await processImportSyntax(resultSource, options);
diff --git a/packages/core/tests/loaders/schema/fixtures/import-shadowed/a.graphql b/packages/core/tests/loaders/schema/fixtures/import-shadowed/a.graphql
new file mode 100644
index 00000000..2112f155
--- /dev/null
+++ b/packages/core/tests/loaders/schema/fixtures/import-shadowed/a.graphql
@@ -0,0 +1,5 @@
+# import B from "b.graphql"
+
+type Query {
+    b: B!
+}
\ No newline at end of file
diff --git a/packages/core/tests/loaders/schema/fixtures/import-shadowed/b.graphql b/packages/core/tests/loaders/schema/fixtures/import-shadowed/b.graphql
new file mode 100644
index 00000000..e5cceb0b
--- /dev/null
+++ b/packages/core/tests/loaders/schema/fixtures/import-shadowed/b.graphql
@@ -0,0 +1,5 @@
+# import X from './c.graphql'
+
+type B {
+    x: X
+}
diff --git a/packages/core/tests/loaders/schema/fixtures/import-shadowed/c.graphql b/packages/core/tests/loaders/schema/fixtures/import-shadowed/c.graphql
new file mode 100644
index 00000000..cb83162e
--- /dev/null
+++ b/packages/core/tests/loaders/schema/fixtures/import-shadowed/c.graphql
@@ -0,0 +1,4 @@
+scalar X
+type B {
+  private: Int
+}
diff --git a/packages/core/tests/loaders/schema/import-schema.spec.ts b/packages/core/tests/loaders/schema/import-schema.spec.ts
index 1e21f123..f299c741 100644
--- a/packages/core/tests/loaders/schema/import-schema.spec.ts
+++ b/packages/core/tests/loaders/schema/import-schema.spec.ts
@@ -1002,5 +1002,5 @@ test('import schema with shadowed type', async () => {
     }
     scalar X
 `
-  expect(normalizeDocumentString(await importSchema('fixtures/import-shadowed/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
+  expect(normalizeDocumentString(await importSchema('./fixtures/import-shadowed/a.graphql'))).toBe(normalizeDocumentString(expectedSDL))
 })
\ No newline at end of file

From b0fd1798c396817722bd1520ea26103dd64b1b74 Mon Sep 17 00:00:00 2001
From: Arda TANRIKULU <ardatanrikulu@gmail.com>
Date: Mon, 30 Dec 2019 01:42:32 +0300
Subject: [PATCH 8/8] Use absolute: true

---
 packages/file-loading/src/file-scanner.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/file-loading/src/file-scanner.ts b/packages/file-loading/src/file-scanner.ts
index 42a73912..75fa3ce8 100644
--- a/packages/file-loading/src/file-scanner.ts
+++ b/packages/file-loading/src/file-scanner.ts
@@ -60,7 +60,9 @@ const LoadFilesDefaultOptions: LoadFilesOptions = {
   extensions: DEFAULT_EXTENSIONS,
   useRequire: false,
   requireMethod: null,
-  globOptions: {},
+  globOptions: {
+    absolute: true,
+  },
   exportNames: DEFAULT_EXPORT_NAMES,
   recursive: true,
   ignoreIndex: false,
@@ -103,7 +105,7 @@ export function loadFiles(path: string, options: LoadFilesOptions = LoadFilesDef
 }
 
 function scanForFilesAsync(globStr: string, globOptions: import('globby').GlobbyOptions = {}): Promise<string[]> {
-  return globby(globStr, { absolute: true, ...globOptions });
+  return globby(globStr, { absolute: true, ...globOptions, ignore: [] });
 }
 
 const checkExtension = (path: string, { extensions, ignoredExtensions }: { extensions?: string[]; ignoredExtensions?: string[] }) => {