feat: use @babel/plugin-transform-runtime instead of regenerator-runtime

e2e/custom-resolver/__tests__/custom-resolver.test.js

@@ -10,10 +10,6 @@ test('should use the custom resolver', () => {
   require('foo');
 });
 
-test('should have regenerator injected', () => {
-  expect(global.fakeRegeneratorInjected).toEqual(true);
-});
-
 test('should work with automock', () => {
   jest.mock('foo');
 

e2e/custom-resolver/resolver.js

@@ -4,11 +4,7 @@ const {
   default: defaultResolver,
 } = require('jest-resolve/build/defaultResolver');
 
-const exportedModules = new Map([
-  ['foo', 'foo'],
-  ['bar', 'bar'],
-  ['regenerator-runtime/runtime', 'fake-regenerator'],
-]);
+const exportedModules = new Map([['foo', 'foo'], ['bar', 'bar']]);
 
 module.exports = (name, options) => {
   const resolution = exportedModules.get(name);

examples/async/.babelrc.js

@@ -1,11 +1,3 @@
 module.exports = {
-  plugins: [
-    [
-      '@babel/plugin-transform-runtime',
-      {
-        regenerator: true,
-      },
-    ],
-  ],
   presets: ['@babel/preset-env'],
 };

examples/async/package.json

@@ -3,7 +3,6 @@
   "version": "0.0.0",
   "name": "example-async",
   "devDependencies": {
-    "@babel/plugin-transform-runtime": "*",
     "@babel/preset-env": "*",
     "@babel/runtime": "*",
     "babel-jest": "*",

examples/snapshot/package.json

@@ -10,8 +10,7 @@
     "@babel/preset-react": "*",
     "babel-jest": "*",
     "jest": "*",
-    "react-test-renderer": "*",
-    "regenerator-runtime": "*"
+    "react-test-renderer": "*"
   },
   "scripts": {
     "test": "jest"

package.json

@@ -8,6 +8,7 @@
     "@babel/preset-flow": "^7.0.0",
     "@babel/preset-react": "^7.0.0",
     "@babel/register": "^7.0.0",
+    "@babel/runtime": "^7.0.0",
     "ansi-regex": "^4.0.0",
     "ansi-styles": "^3.2.0",
     "babel-eslint": "^9.0.0",
@@ -52,7 +53,6 @@
     "progress": "^2.0.0",
     "promise": "^8.0.2",
     "readable-stream": "^3.0.3",
-    "regenerator-runtime": "^0.12.1",
     "resolve": "^1.4.0",
     "rimraf": "^2.6.2",
     "rollup": "^0.66.1",

packages/babel-jest/package.json

@@ -10,7 +10,8 @@
   "main": "build/index.js",
   "dependencies": {
     "babel-plugin-istanbul": "^5.1.0",
-    "babel-preset-jest": "^23.2.0"
+    "babel-preset-jest": "^23.2.0",
+    "@babel/plugin-transform-runtime": "^7.2.0"
   },
   "devDependencies": {
     "@babel/core": "^7.1.0"

packages/babel-jest/src/index.js

@@ -23,6 +23,9 @@ import {transformSync as babelTransform, loadPartialConfig} from '@babel/core';
 const THIS_FILE = fs.readFileSync(__filename);
 const jestPresetPath = require.resolve('babel-preset-jest');
 const babelIstanbulPlugin = require.resolve('babel-plugin-istanbul');
+const babelTransformRuntimePlugin = require.resolve(
+  '@babel/plugin-transform-runtime',
+);
 const cwd = process.cwd();
 
 export const createTransformer = (options: any): Transformer => {
@@ -33,7 +36,7 @@ export const createTransformer = (options: any): Transformer => {
       supportsStaticESM: false,
     },
     compact: false,
-    plugins: (options && options.plugins) || [],
+    plugins: (options && options.plugins) || [babelTransformRuntimePlugin],
     presets: ((options && options.presets) || []).concat(jestPresetPath),
     sourceMaps: 'both',
   });

packages/jest-config/src/__tests__/normalize.test.js

@@ -738,14 +738,6 @@ describe('babel-jest', () => {
 
     expect(options.transform[0][0]).toBe(DEFAULT_JS_PATTERN);
     expect(options.transform[0][1]).toEqual(require.resolve('babel-jest'));
-    expect(options.setupFiles).toEqual([
-      path.sep +
-        'node_modules' +
-        path.sep +
-        'regenerator-runtime' +
-        path.sep +
-        'runtime',
-    ]);
   });
 
   it('uses babel-jest if babel-jest is explicitly specified in a custom transform options', () => {
@@ -762,38 +754,6 @@ describe('babel-jest', () => {
 
     expect(options.transform[0][0]).toBe(customJSPattern);
     expect(options.transform[0][1]).toEqual(require.resolve('babel-jest'));
-    expect(options.setupFiles).toEqual([
-      path.sep +
-        'node_modules' +
-        path.sep +
-        'regenerator-runtime' +
-        path.sep +
-        'runtime',
-    ]);
-  });
-
-  it('uses regenerator if babel-jest is explicitly specified', () => {
-    const ROOT_DIR = '<rootDir>' + path.sep;
-
-    const {options} = normalize(
-      {
-        rootDir: '/root',
-        transform: {
-          [DEFAULT_JS_PATTERN]:
-            ROOT_DIR + Resolver.findNodeModule('babel-jest'),
-        },
-      },
-      {},
-    );
-
-    expect(options.setupFiles).toEqual([
-      path.sep +
-        'node_modules' +
-        path.sep +
-        'regenerator-runtime' +
-        path.sep +
-        'runtime',
-    ]);
   });
 });
 
@@ -1188,12 +1148,7 @@ describe('preset without setupFiles', () => {
     );
 
     expect(options).toEqual(
-      expect.objectContaining({
-        setupFiles: [
-          '/node_modules/regenerator-runtime/runtime',
-          '/node_modules/a',
-        ],
-      }),
+      expect.objectContaining({setupFiles: ['/node_modules/a']}),
     );
   });
 });

packages/jest-config/src/normalize.js

@@ -169,8 +169,6 @@ const setupBabelJest = (options: InitialOptions) => {
       [DEFAULT_JS_PATTERN]: babelJest,
     };
   }
-
-  return babelJest;
 };
 
 const normalizeCollectCoverageOnlyFrom = (
@@ -437,7 +435,8 @@ export default function normalize(options: InitialOptions, argv: Argv) {
     options.coverageDirectory = path.resolve(options.rootDir, 'coverage');
   }
 
-  const babelJest = setupBabelJest(options);
+  setupBabelJest(options);
+
   const newOptions: $Shape<
     DefaultOptions & ProjectConfig & GlobalConfig,
   > = (Object.assign({}, DEFAULT_CONFIG): any);
@@ -758,17 +757,6 @@ export default function normalize(options: InitialOptions, argv: Argv) {
 
   newOptions.maxWorkers = getMaxWorkers(argv);
 
-  if (babelJest) {
-    const regeneratorRuntimePath = Resolver.findNodeModule(
-      'regenerator-runtime/runtime',
-      {basedir: options.rootDir, resolver: newOptions.resolver},
-    );
-
-    if (regeneratorRuntimePath) {
-      newOptions.setupFiles.unshift(regeneratorRuntimePath);
-    }
-  }
-
   if (newOptions.testRegex.length && options.testMatch) {
     throw createConfigError(
       `  Configuration options ${chalk.bold('testMatch')} and` +

yarn.lock

@@ -630,7 +630,7 @@
   dependencies:
     regenerator-transform "^0.13.3"
 
-"@babel/plugin-transform-runtime@*", "@babel/plugin-transform-runtime@^7.0.0":
+"@babel/plugin-transform-runtime@^7.0.0":
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/@babel/plugin-transform-runtime/-/plugin-transform-runtime-7.1.0.tgz#9f76920d42551bb577e2dc594df229b5f7624b63"
   integrity sha512-WFLMgzu5DLQEah0lKTJzYb14vd6UiES7PTnXcvrPZ1VrwFeJ+mTbvr65fFAsXYMt2bIoOoC0jk76zY1S7HZjUg==
@@ -640,6 +640,16 @@
     resolve "^1.8.1"
     semver "^5.5.1"
 
+"@babel/plugin-transform-runtime@^7.2.0":
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-runtime/-/plugin-transform-runtime-7.2.0.tgz#566bc43f7d0aedc880eaddbd29168d0f248966ea"
+  integrity sha512-jIgkljDdq4RYDnJyQsiWbdvGeei/0MOTtSHKO/rfbd/mXBxNpdlulMx49L0HQ4pug1fXannxoqCI+fYSle9eSw==
+  dependencies:
+    "@babel/helper-module-imports" "^7.0.0"
+    "@babel/helper-plugin-utils" "^7.0.0"
+    resolve "^1.8.1"
+    semver "^5.5.1"
+
 "@babel/plugin-transform-shorthand-properties@^7.0.0":
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/@babel/plugin-transform-shorthand-properties/-/plugin-transform-shorthand-properties-7.0.0.tgz#85f8af592dcc07647541a0350e8c95c7bf419d15"
@@ -797,9 +807,9 @@
     source-map-support "^0.5.9"
 
 "@babel/runtime@*", "@babel/runtime@^7.0.0":
-  version "7.1.2"
-  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.1.2.tgz#81c89935f4647706fc54541145e6b4ecfef4b8e3"
-  integrity sha512-Y3SCjmhSupzFB6wcv1KmmFucH6gDVnI30WjOcicV10ju0cZjak3Jcs67YLIXBrmZYw1xCrVeJPbycFwrqNyxpg==
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.2.0.tgz#b03e42eeddf5898e00646e4c840fa07ba8dcad7f"
+  integrity sha512-oouEibCbHMVdZSDlJBO6bZmID/zA/G/Qx3H1d3rSNPTD+L8UNKvCat7aKWSJ74zYbm5zWGh0GQN0hKj8zYFTCg==
   dependencies:
     regenerator-runtime "^0.12.0"
 
@@ -11299,11 +11309,6 @@ regenerate@^1.4.0:
   resolved "https://registry.yarnpkg.com/regenerate/-/regenerate-1.4.0.tgz#4a856ec4b56e4077c557589cae85e7a4c8869a11"
   integrity sha512-1G6jJVDWrt0rK99kBjvEtziZNCICAuvIPkSiUFIQxVP06RCVpq3dmDo2oi6ABpYaDYaTRr67BEhL8r1wgEZZKg==
 
-regenerator-runtime@*, regenerator-runtime@^0.12.0, regenerator-runtime@^0.12.1:
-  version "0.12.1"
-  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.12.1.tgz#fa1a71544764c036f8c49b13a08b2594c9f8a0de"
-  integrity sha512-odxIc1/vDlo4iZcfXqRYFj0vpXFNoGdKMAUieAlFYO6m/nl5e9KR/beGf41z4a1FI+aQgtjhuaSlDxQ0hmkrHg==
-
 regenerator-runtime@^0.10.0:
   version "0.10.5"
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.10.5.tgz#336c3efc1220adcedda2c9fab67b5a7955a33658"
@@ -11314,6 +11319,11 @@ regenerator-runtime@^0.11.0, regenerator-runtime@^0.11.1:
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz#be05ad7f9bf7d22e056f9726cee5017fbf19e2e9"
   integrity sha512-MguG95oij0fC3QV3URf4V2SDYGJhJnJGqvIIgdECeODCT98wSWDAJ94SSuVpYQUoTcGUIL6L4yNB7j1DFFHSBg==
 
+regenerator-runtime@^0.12.0:
+  version "0.12.1"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.12.1.tgz#fa1a71544764c036f8c49b13a08b2594c9f8a0de"
+  integrity sha512-odxIc1/vDlo4iZcfXqRYFj0vpXFNoGdKMAUieAlFYO6m/nl5e9KR/beGf41z4a1FI+aQgtjhuaSlDxQ0hmkrHg==
+
 regenerator-transform@^0.13.3:
   version "0.13.3"
   resolved "https://registry.yarnpkg.com/regenerator-transform/-/regenerator-transform-0.13.3.tgz#264bd9ff38a8ce24b06e0636496b2c856b57bcbb"