Reduce Nexus example to define extension inline

examples/extend-graphql-schema-graphql-tools/schema.graphql

@@ -234,8 +234,8 @@ type Query {
   authorsCount(where: AuthorWhereInput! = {}): Int
   keystone: KeystoneMeta!
 
-  """ Return all posts for a user from the last <days> days """
-  recentPosts(id: ID!, days: Int! = 7): [Post]
+  """ Return all posts for a user from the last <seconds> seconds """
+  recentPosts(id: ID!, seconds: Int! = 600): [Post]
 
   """ Compute statistics for a user """
   stats(id: ID!): Statistics

examples/extend-graphql-schema-graphql-tools/schema.ts

@@ -32,9 +32,9 @@ export const lists: Lists = {
   }),
 };
 
-export const extendGraphqlSchema = (schema: GraphQLSchema) =>
-  mergeSchemas({
-    schemas: [schema],
+export function extendGraphqlSchema(baseSchema: GraphQLSchema) {
+  return mergeSchemas({
+    schemas: [baseSchema],
     typeDefs: `
     type Mutation {
       """ Publish a post """
@@ -45,8 +45,8 @@ export const extendGraphqlSchema = (schema: GraphQLSchema) =>
     }
 
     type Query {
-      """ Return all posts for a user from the last <days> days """
-      recentPosts(id: ID!, days: Int! = 7): [Post]
+      """ Return all posts for a user from the last <seconds> seconds """
+      recentPosts(id: ID!, seconds: Int! = 600): [Post]
 
       """ Compute statistics for a user """
       stats(id: ID!): Statistics
@@ -87,11 +87,8 @@ export const extendGraphqlSchema = (schema: GraphQLSchema) =>
         },
       },
       Query: {
-        recentPosts: (root, { id, days }, context: Context) => {
-          // Create a date string <days> in the past from now()
-          const cutoff = new Date(
-            new Date().setUTCDate(new Date().getUTCDate() - days)
-          ).toUTCString();
+        recentPosts: (root, { id, seconds }, context: Context) => {
+          const cutoff = new Date(Date.now() - seconds * 1000);
 
           // Note we use `context.db.Post` here as we have a return type
           // of [Post], and this API provides results in the correct format.
@@ -132,3 +129,4 @@ export const extendGraphqlSchema = (schema: GraphQLSchema) =>
       },
     },
   });
+}

examples/extend-graphql-schema-graphql-ts/schema.graphql

@@ -229,7 +229,7 @@ type Query {
   author(where: AuthorWhereUniqueInput!): Author
   authorsCount(where: AuthorWhereInput! = {}): Int
   keystone: KeystoneMeta!
-  recentPosts(id: ID!, days: Int! = 7): [Post!]
+  recentPosts(id: ID!, seconds: Int! = 600): [Post!]
   stats(id: ID!): Statistics
 }
 

examples/extend-graphql-schema-graphql-ts/schema.ts

@@ -105,13 +105,10 @@ export const extendGraphqlSchema = graphql.extend(base => {
         type: graphql.list(graphql.nonNull(base.object('Post'))),
         args: {
           id: graphql.arg({ type: graphql.nonNull(graphql.ID) }),
-          days: graphql.arg({ type: graphql.nonNull(graphql.Int), defaultValue: 7 }),
+          seconds: graphql.arg({ type: graphql.nonNull(graphql.Int), defaultValue: 600 }),
         },
-        resolve(source, { id, days }, context: Context) {
-          // Create a date string <days> in the past from now()
-          const cutoff = new Date(
-            new Date().setUTCDate(new Date().getUTCDate() - days)
-          ).toISOString();
+        resolve(source, { id, seconds }, context: Context) {
+          const cutoff = new Date(Date.now() - seconds * 1000);
 
           // Note we use `context.db.Post` here as we have a return type
           // of [Post], and this API provides results in the correct format.

examples/extend-graphql-schema-nexus/.gitignore

@@ -1 +1 @@
-nexus/nexus-typegen.ts
+nexus-types.ts

examples/extend-graphql-schema-nexus/keystone.ts

@@ -1,8 +1,6 @@
 import { config } from '@keystone-6/core';
-import { mergeSchemas } from '@graphql-tools/schema';
 import { fixPrismaPath } from '../example-utils';
-import { lists } from './schema';
-import { nexusSchema } from './nexus';
+import { lists, extendGraphqlSchema } from './schema';
 
 export default config({
   db: {
@@ -13,5 +11,5 @@ export default config({
     ...fixPrismaPath,
   },
   lists,
-  extendGraphqlSchema: keystoneSchema => mergeSchemas({ schemas: [keystoneSchema, nexusSchema] }),
+  extendGraphqlSchema,
 });

examples/extend-graphql-schema-nexus/package.json

@@ -12,7 +12,7 @@
     "@graphql-tools/schema": "^9.0.0",
     "@keystone-6/core": "^5.0.0",
     "graphql": "^16.6.0",
-    "nexus": "1.3.0"
+    "nexus": "^1.3.0"
   },
   "repository": "https://github.com/keystonejs/keystone/tree/main/examples/extend-graphql-schema-nexus"
 }

examples/extend-graphql-schema-nexus/schema.graphql

@@ -227,8 +227,8 @@ type Query {
   author(where: AuthorWhereUniqueInput!): Author
   authorsCount(where: AuthorWhereInput! = {}): Int
   keystone: KeystoneMeta!
-  nexusPosts(authorId: String, days: Int! = 7): [NexusPost]!
-  things: [Thing]!
+  nexusPosts(id: String!, seconds: Int! = 600): [Post]!
+  things: [NexusThing]!
 }
 
 type KeystoneMeta {
@@ -338,14 +338,7 @@ enum KeystoneAdminUISortDirection {
   DESC
 }
 
-type NexusPost {
-  id: String
-  title: String
-  status: String
-  content: String
-}
-
-type Thing {
+type NexusThing {
   id: Int
   title: String
 }

examples/extend-graphql-schema-nexus/schema.ts

@@ -1,8 +1,12 @@
+import path from 'path';
+import type { GraphQLSchema } from 'graphql';
 import { list } from '@keystone-6/core';
 import { allowAll } from '@keystone-6/core/access';
 import { select, relationship, text, timestamp } from '@keystone-6/core/fields';
+import * as nexus from 'nexus';
+import type { Lists } from '.keystone/types';
 
-export const lists = {
+export const lists: Lists = {
   Post: list({
     access: allowAll,
     fields: {
@@ -28,3 +32,72 @@ export const lists = {
     },
   }),
 };
+
+export function extendGraphqlSchema(baseSchema: GraphQLSchema) {
+  const NexusPostQuery = nexus.extendType({
+    type: 'Query',
+    definition(t) {
+      t.field('nexusPosts', {
+        type: nexus.nonNull(nexus.list('Post')),
+        args: {
+          id: nexus.nonNull(nexus.stringArg()),
+          seconds: nexus.nonNull(nexus.intArg({ default: 600 })),
+        },
+
+        async resolve(root, { id, seconds }, context) {
+          const cutoff = new Date(Date.now() - seconds * 1000);
+
+          // Note we use `context.db.Post` here as we have a return type
+          // of [Post], and this API provides results in the correct format.
+          // If you accidentally use `context.query.Post` here you can expect problems
+          // when accessing the fields in your GraphQL client.
+          return context.db.Post.findMany({
+            where: { author: { id: { equals: id } }, publishDate: { gt: cutoff } },
+          }) as Promise<Lists.Post.Item[]>; // TODO: nexus doesn't like <readonly Post[]>
+        },
+      });
+    },
+  });
+
+  const NexusThing = nexus.objectType({
+    name: 'NexusThing',
+    definition(t) {
+      t.int('id');
+      t.string('title');
+    },
+  });
+
+  const NexusThingQuery = nexus.extendType({
+    type: 'Query',
+    definition(t) {
+      t.nonNull.list.field('things', {
+        type: NexusThing,
+        resolve() {
+          return [
+            { id: 1, title: 'Keystone' },
+            { id: 2, title: 'Prisma' },
+            { id: 3, title: 'Nexus' },
+          ];
+        },
+      });
+    },
+  });
+
+  return nexus.makeSchema({
+    mergeSchema: {
+      schema: baseSchema,
+    },
+    outputs: {
+      typegen: path.join(process.cwd(), 'nexus-types.ts'),
+    },
+    contextType: {
+      module: path.join(process.cwd(), 'node_modules', '.keystone', 'types.d.ts'),
+      export: 'Context',
+    },
+    types: {
+      NexusThing,
+      NexusPostQuery,
+      NexusThingQuery,
+    },
+  });
+}

yarn.lock

@@ -11174,7 +11174,7 @@ next@^13.0.3:
     "@next/swc-win32-ia32-msvc" "13.1.1"
     "@next/swc-win32-x64-msvc" "13.1.1"
 
-nexus@1.3.0:
+nexus@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/nexus/-/nexus-1.3.0.tgz#d7e2671d48bf887e30e2815f509bbf4b0ee2a02b"
   integrity sha512-w/s19OiNOs0LrtP7pBmD9/FqJHvZLmCipVRt6v1PM8cRUYIbhEswyNKGHVoC4eHZGPSnD+bOf5A3+gnbt0A5/A==