Remote config fetching

.changeset/grumpy-swans-think.md

@@ -0,0 +1,5 @@
+---
+'@codeshift/validator': minor
+---
+
+Fundamentally simplifies and improves on how validation works.

.changeset/silly-icons-whisper.md

@@ -0,0 +1,5 @@
+---
+'@codeshift/types': patch
+---
+
+Initial release

.changeset/slimy-foxes-train.md

@@ -0,0 +1,5 @@
+---
+'@codeshift/cli': minor
+---
+
+Codemods can now be sourced from standalone npm packages such as react as long as they provide a codeshift.config.js. This allows for greater flexibility for where codemods may be distributed

packages/cli/package.json

@@ -22,6 +22,7 @@
     "fs-extra": "^9.1.0",
     "jscodeshift": "^0.12.0",
     "live-plugin-manager": "^0.15.1",
+    "lodash": "^4.17.21",
     "semver": "^7.3.5",
     "ts-node": "^9.1.1"
   }

packages/cli/src/main.spec.ts

@@ -6,29 +6,12 @@ jest.mock('jscodeshift/src/Runner', () => ({
 // @ts-ignore
 import * as jscodeshift from 'jscodeshift/src/Runner';
 import { PluginManager } from 'live-plugin-manager';
+
 import main from './main';
 
 const mockPath = 'src/pages/home-page/';
 
 describe('main', () => {
-  beforeEach(() => {
-    (PluginManager as jest.Mock).mockReturnValue({
-      install: () => Promise.resolve(undefined),
-      require: (codemodName: string) => ({
-        transforms: {
-          '18.0.0': `${codemodName}/path/to/18.js`,
-          '19.0.0': `${codemodName}/path/to/19.js`,
-          '20.0.0': `${codemodName}/path/to/20.js`,
-        },
-        presets: {
-          'update-formatting': `${codemodName}/path/to/update-formatting.js`,
-          'update-imports': `${codemodName}/path/to/update-imports.js`,
-        },
-      }),
-      uninstallAll: () => Promise.resolve(),
-    });
-  });
-
   afterEach(() => {
     jest.resetAllMocks();
   });
@@ -134,6 +117,26 @@ describe('main', () => {
   });
 
   describe('when running transforms with the -p flag', () => {
+    beforeEach(() => {
+      (PluginManager as jest.Mock).mockImplementation(() => ({
+        install: jest.fn().mockResolvedValue(undefined),
+        require: jest.fn().mockImplementation((codemodName: string) => {
+          if (!codemodName.startsWith('@codeshift')) {
+            throw new Error('Attempted to fetch codemod from npm');
+          }
+
+          return {
+            transforms: {
+              '18.0.0': `${codemodName}/path/to/18.js`,
+              '19.0.0': `${codemodName}/path/to/19.js`,
+              '20.0.0': `${codemodName}/path/to/20.js`,
+            },
+          };
+        }),
+        uninstallAll: jest.fn().mockResolvedValue(undefined),
+      }));
+    });
+
     it('should run package transform for single version', async () => {
       await main([mockPath], {
         packages: 'mylib@18.0.0',
@@ -234,6 +237,7 @@ describe('main', () => {
         expect.any(Object),
       );
     });
+
     it('should run multiple transforms of the same package', async () => {
       await main([mockPath], {
         packages: '@myscope/mylib@20.0.0@19.0.0',
@@ -374,6 +378,25 @@ describe('main', () => {
   });
 
   describe('when running presets with the -p flag', () => {
+    beforeEach(() => {
+      (PluginManager as jest.Mock).mockImplementation(() => ({
+        install: jest.fn().mockResolvedValue(undefined),
+        require: jest.fn().mockImplementation((codemodName: string) => {
+          if (!codemodName.startsWith('@codeshift')) {
+            throw new Error('Attempted to fetch codemod from npm');
+          }
+
+          return {
+            presets: {
+              'update-formatting': `${codemodName}/path/to/update-formatting.js`,
+              'update-imports': `${codemodName}/path/to/update-imports.js`,
+            },
+          };
+        }),
+        uninstallAll: jest.fn().mockResolvedValue(undefined),
+      }));
+    });
+
     it('should run single preset', async () => {
       await main([mockPath], {
         packages: 'mylib#update-formatting',
@@ -508,18 +531,71 @@ describe('main', () => {
     });
   });
 
+  describe('when running transforms from NPM with the -p flag', () => {
+    beforeEach(() => {
+      (PluginManager as jest.Mock).mockImplementation(() => ({
+        install: jest.fn().mockResolvedValue(undefined),
+        require: jest.fn().mockImplementation((codemodName: string) => {
+          if (codemodName.startsWith('@codeshift')) {
+            throw new Error('Attempted to fetch codemod from community folder');
+          }
+
+          return {
+            transforms: {
+              '18.0.0': `${codemodName}/path/to/18.js`,
+            },
+            presets: {
+              'update-formatting': `${codemodName}/path/to/update-formatting.js`,
+            },
+          };
+        }),
+        uninstallAll: jest.fn().mockResolvedValue(undefined),
+      }));
+    });
+
+    it('should run package transform for single version', async () => {
+      await main([mockPath], {
+        packages: 'mylib@18.0.0',
+        parser: 'babel',
+        extensions: 'js',
+      });
+
+      expect(jscodeshift.run).toHaveBeenCalledTimes(1);
+      expect(jscodeshift.run).toHaveBeenCalledWith(
+        'mylib/path/to/18.js',
+        expect.arrayContaining([mockPath]),
+        expect.anything(),
+      );
+    });
+
+    it('should run single preset', async () => {
+      await main([mockPath], {
+        packages: 'mylib#update-formatting',
+        parser: 'babel',
+        extensions: 'js',
+      });
+
+      expect(jscodeshift.run).toHaveBeenCalledTimes(1);
+      expect(jscodeshift.run).toHaveBeenCalledWith(
+        'mylib/path/to/update-formatting.js',
+        expect.arrayContaining([mockPath]),
+        expect.anything(),
+      );
+    });
+  });
+
   describe('when reading configs using non-cjs exports', () => {
     it('should read configs exported with export default', async () => {
       (PluginManager as jest.Mock).mockReturnValue({
         install: () => Promise.resolve(undefined),
         // @ts-ignore
-        require: (codemodName: string) => ({
+        require: jest.fn().mockImplementationOnce((codemodName: string) => ({
           default: {
             transforms: {
               '18.0.0': `${codemodName}/path/to/18.js`,
             },
           },
-        }),
+        })),
         uninstallAll: () => Promise.resolve(),
       });
 

packages/cli/src/main.ts

@@ -1,13 +1,84 @@
 import semver from 'semver';
 import chalk from 'chalk';
+import path from 'path';
 import { PluginManager } from 'live-plugin-manager';
+import merge from 'lodash/merge';
 // @ts-ignore Run transform(s) on path https://github.com/facebook/jscodeshift/issues/398
 import * as jscodeshift from 'jscodeshift/src/Runner';
+import { isValidConfig } from '@codeshift/validator';
+import { CodeshiftConfig } from '@codeshift/types';
 
 import { Flags } from './types';
 import { InvalidUserInputError } from './errors';
 
+async function fetchCommunityPackageConfig(
+  packageName: string,
+  packageManager: PluginManager,
+) {
+  const pkgName = packageName.replace('@', '').replace('/', '__');
+  const commPackageName = `@codeshift/mod-${pkgName}`;
+
+  await packageManager.install(commPackageName);
+  const pkg = packageManager.require(commPackageName);
+  const config: CodeshiftConfig = pkg.default ? pkg.default : pkg;
+
+  if (!isValidConfig(config)) {
+    throw new Error(`Invalid config found in module ${commPackageName}`);
+  }
+
+  return config;
+}
+
+async function fetchRemotePackageConfig(
+  packageName: string,
+  packageManager: PluginManager,
+) {
+  await packageManager.install(packageName);
+  const pkg = packageManager.require(packageName);
+
+  if (pkg) {
+    const config: CodeshiftConfig = pkg.default ? pkg.default : pkg;
+
+    if (config && isValidConfig(config)) {
+      // Found a config at the main entry-point
+      return config;
+    }
+  }
+
+  const info = packageManager.getInfo(packageName);
+
+  if (info) {
+    let config: CodeshiftConfig | undefined;
+
+    [
+      path.join(info?.location, 'codeshift.config.js'),
+      path.join(info?.location, 'codeshift.config.ts'),
+      path.join(info?.location, 'src', 'codeshift.config.js'),
+      path.join(info?.location, 'src', 'codeshift.config.ts'),
+      path.join(info?.location, 'codemods', 'codeshift.config.js'),
+      path.join(info?.location, 'codemods', 'codeshift.config.ts'),
+    ].forEach(searchPath => {
+      try {
+        // eslint-disable-next-line @typescript-eslint/no-var-requires
+        const pkg = require(searchPath);
+        const searchConfig: CodeshiftConfig = pkg.default ? pkg.default : pkg;
+
+        if (isValidConfig(searchConfig)) {
+          config = searchConfig;
+        }
+      } catch (e) {}
+    });
+
+    if (config) return config;
+  }
+
+  throw new Error(
+    `Unable to locate a valid codeshift.config in package ${packageName}`,
+  );
+}
+
 export default async function main(paths: string[], flags: Flags) {
+  const packageManager = new PluginManager();
   let transforms: string[] = [];
 
   if (!flags.transform && !flags.packages) {
@@ -26,24 +97,36 @@ export default async function main(paths: string[], flags: Flags) {
     transforms.push(flags.transform);
   }
 
-  const packageManager = new PluginManager();
-
   if (flags.packages) {
     const pkgs = flags.packages.split(',').filter(pkg => !!pkg);
 
     for (const pkg of pkgs) {
-      const pkgName = pkg
-        .split(/[@#]/)
-        .filter(str => !!str)[0]
-        .replace('/', '__');
-      const packageName = `@codeshift/mod-${pkgName}`;
-
-      await packageManager.install(packageName);
-      const codeshiftPackage = packageManager.require(packageName);
-
-      const config = codeshiftPackage.default
-        ? codeshiftPackage.default
-        : codeshiftPackage;
+      const shouldPrependAtSymbol = pkg.startsWith('@') ? '@' : '';
+      const pkgName =
+        shouldPrependAtSymbol + pkg.split(/[@#]/).filter(str => !!str)[0];
+
+      let communityConfig;
+      let remoteConfig;
+
+      try {
+        communityConfig = await fetchCommunityPackageConfig(
+          pkgName,
+          packageManager,
+        );
+      } catch (error) {}
+
+      try {
+        remoteConfig = await fetchRemotePackageConfig(pkgName, packageManager);
+      } catch (error) {}
+
+      if (!communityConfig && !remoteConfig) {
+        throw new Error(
+          `Unable to locate package from the codeshift-community packages or as a standalone NPM package.
+Make sure the package name ${pkgName} has been spelled correctly and exists before trying again.`,
+        );
+      }
+
+      const config: CodeshiftConfig = merge({}, communityConfig, remoteConfig);
 
       const rawTransformIds = pkg.split(/(?=[@#])/).filter(str => !!str);
       rawTransformIds.shift();

packages/cli/src/validate.ts

@@ -1,8 +1,8 @@
-import { isValidConfig, isValidPackageJson } from '@codeshift/validator';
+import { isValidConfigAtPath, isValidPackageJson } from '@codeshift/validator';
 
 export default async function validate(targetPath: string = '.') {
   try {
-    await isValidConfig(targetPath);
+    await isValidConfigAtPath(targetPath);
     await isValidPackageJson(targetPath);
   } catch (error) {
     console.warn(error);

packages/types/README.md

@@ -0,0 +1 @@
+# @codeshift/types

packages/types/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "@codeshift/types",
+  "version": "0.0.1",
+  "main": "dist/codeshift-types.cjs.js",
+  "module": "dist/codeshift-types.esm.js",
+  "types": "dist/codeshift-types.cjs.d.ts",
+  "license": "MIT",
+  "repository": "https://github.com/CodeshiftCommunity/CodeshiftCommunity/tree/master/packages/types"
+}

packages/types/src/index.ts

@@ -0,0 +1,7 @@
+export interface CodeshiftConfig {
+  target?: string[];
+  maintainers?: string[];
+  description?: string;
+  transforms?: Record<string, string>;
+  presets?: Record<string, string>;
+}

packages/validator/package.json

@@ -6,9 +6,14 @@
   "license": "MIT",
   "repository": "https://github.com/CodeshiftCommunity/CodeshiftCommunity/tree/master/packages/validator",
   "dependencies": {
+    "@codeshift/types": "^0.0.1",
     "fs-extra": "^9.1.0",
+    "lodash": "^4.17.21",
     "recast": "^0.20.4",
     "semver": "^7.3.5",
     "ts-node": "^9.1.1"
+  },
+  "devDependencies": {
+    "@types/lodash": "^4.14.176"
   }
 }