workaround: add build files

.gitignore

@@ -16,7 +16,6 @@
 
 /node_modules
 
-/packages/*/build/
 /packages/*/coverage/
 /packages/*/node_modules/
 

package.json

@@ -2,6 +2,11 @@
   "name": "@jest/monorepo",
   "private": true,
   "version": "0.0.0",
+  "files": [
+    "packages/babel-preset-jest/index.js",
+    "**/bin",
+    "**/build"
+  ],
   "devDependencies": {
     "@babel/core": "^7.3.4",
     "@babel/plugin-proposal-class-properties": "^7.3.4",
@@ -154,5 +159,8 @@
     "jest": "workspace:*",
     "jest-environment-node": "workspace:*",
     "react-native": "patch:react-native@0.63.2#./patches/react-native.patch"
+  },
+  "dependencies": {
+    "module-alias": "^2.2.2"
   }
 }

packages/babel-jest/build/index.d.ts

@@ -0,0 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import { TransformOptions } from '@babel/core';
+import type { Transformer } from '@jest/transform';
+declare const transformer: Transformer<TransformOptions>;
+export = transformer;

packages/babel-jest/build/index.js

@@ -0,0 +1,292 @@
+'use strict';
+
+function _crypto() {
+  const data = require('crypto');
+
+  _crypto = function () {
+    return data;
+  };
+
+  return data;
+}
+
+function path() {
+  const data = _interopRequireWildcard(require('path'));
+
+  path = function () {
+    return data;
+  };
+
+  return data;
+}
+
+function _core() {
+  const data = require('@babel/core');
+
+  _core = function () {
+    return data;
+  };
+
+  return data;
+}
+
+function _chalk() {
+  const data = _interopRequireDefault(require('chalk'));
+
+  _chalk = function () {
+    return data;
+  };
+
+  return data;
+}
+
+function fs() {
+  const data = _interopRequireWildcard(require('graceful-fs'));
+
+  fs = function () {
+    return data;
+  };
+
+  return data;
+}
+
+function _slash() {
+  const data = _interopRequireDefault(require('slash'));
+
+  _slash = function () {
+    return data;
+  };
+
+  return data;
+}
+
+var _loadBabelConfig = require('./loadBabelConfig');
+
+function _interopRequireDefault(obj) {
+  return obj && obj.__esModule ? obj : {default: obj};
+}
+
+function _getRequireWildcardCache() {
+  if (typeof WeakMap !== 'function') return null;
+  var cache = new WeakMap();
+  _getRequireWildcardCache = function () {
+    return cache;
+  };
+  return cache;
+}
+
+function _interopRequireWildcard(obj) {
+  if (obj && obj.__esModule) {
+    return obj;
+  }
+  if (obj === null || (typeof obj !== 'object' && typeof obj !== 'function')) {
+    return {default: obj};
+  }
+  var cache = _getRequireWildcardCache();
+  if (cache && cache.has(obj)) {
+    return cache.get(obj);
+  }
+  var newObj = {};
+  var hasPropertyDescriptor =
+    Object.defineProperty && Object.getOwnPropertyDescriptor;
+  for (var key in obj) {
+    if (Object.prototype.hasOwnProperty.call(obj, key)) {
+      var desc = hasPropertyDescriptor
+        ? Object.getOwnPropertyDescriptor(obj, key)
+        : null;
+      if (desc && (desc.get || desc.set)) {
+        Object.defineProperty(newObj, key, desc);
+      } else {
+        newObj[key] = obj[key];
+      }
+    }
+  }
+  newObj.default = obj;
+  if (cache) {
+    cache.set(obj, newObj);
+  }
+  return newObj;
+}
+
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+const THIS_FILE = fs().readFileSync(__filename);
+
+const jestPresetPath = require.resolve('babel-preset-jest');
+
+const babelIstanbulPlugin = require.resolve('babel-plugin-istanbul');
+
+const createTransformer = userOptions => {
+  var _inputOptions$plugins, _inputOptions$presets;
+
+  const inputOptions =
+    userOptions !== null && userOptions !== void 0 ? userOptions : {};
+  const options = {
+    ...inputOptions,
+    caller: {
+      name: 'babel-jest',
+      supportsDynamicImport: false,
+      supportsExportNamespaceFrom: false,
+      supportsStaticESM: false,
+      supportsTopLevelAwait: false,
+      ...inputOptions.caller
+    },
+    compact: false,
+    plugins:
+      (_inputOptions$plugins = inputOptions.plugins) !== null &&
+      _inputOptions$plugins !== void 0
+        ? _inputOptions$plugins
+        : [],
+    presets: ((_inputOptions$presets = inputOptions.presets) !== null &&
+    _inputOptions$presets !== void 0
+      ? _inputOptions$presets
+      : []
+    ).concat(jestPresetPath),
+    sourceMaps: 'both'
+  };
+
+  function loadBabelConfig(cwd, filename, transformOptions) {
+    var _transformOptions$sup,
+      _transformOptions$sup2,
+      _transformOptions$sup3,
+      _transformOptions$sup4;
+
+    // `cwd` first to allow incoming options to override it
+    const babelConfig = (0, _loadBabelConfig.loadPartialConfig)({
+      cwd,
+      ...options,
+      caller: {
+        ...options.caller,
+        supportsDynamicImport:
+          (_transformOptions$sup = transformOptions.supportsDynamicImport) !==
+            null && _transformOptions$sup !== void 0
+            ? _transformOptions$sup
+            : options.caller.supportsDynamicImport,
+        supportsExportNamespaceFrom:
+          (_transformOptions$sup2 =
+            transformOptions.supportsExportNamespaceFrom) !== null &&
+          _transformOptions$sup2 !== void 0
+            ? _transformOptions$sup2
+            : options.caller.supportsExportNamespaceFrom,
+        supportsStaticESM:
+          (_transformOptions$sup3 = transformOptions.supportsStaticESM) !==
+            null && _transformOptions$sup3 !== void 0
+            ? _transformOptions$sup3
+            : options.caller.supportsStaticESM,
+        supportsTopLevelAwait:
+          (_transformOptions$sup4 = transformOptions.supportsTopLevelAwait) !==
+            null && _transformOptions$sup4 !== void 0
+            ? _transformOptions$sup4
+            : options.caller.supportsTopLevelAwait
+      },
+      filename
+    });
+
+    if (!babelConfig) {
+      throw new Error(
+        `babel-jest: Babel ignores ${_chalk().default.bold(
+          (0, _slash().default)(path().relative(cwd, filename))
+        )} - make sure to include the file in Jest's ${_chalk().default.bold(
+          'transformIgnorePatterns'
+        )} as well.`
+      );
+    }
+
+    return babelConfig;
+  }
+
+  return {
+    canInstrument: true,
+
+    getCacheKey(sourceText, sourcePath, transformOptions) {
+      const {config, configString, instrument} = transformOptions;
+      const babelOptions = loadBabelConfig(
+        config.cwd,
+        sourcePath,
+        transformOptions
+      );
+      const configPath = [
+        babelOptions.config || '',
+        babelOptions.babelrc || ''
+      ];
+      return (0, _crypto().createHash)('md5')
+        .update(THIS_FILE)
+        .update('\0', 'utf8')
+        .update(JSON.stringify(babelOptions.options))
+        .update('\0', 'utf8')
+        .update(sourceText)
+        .update('\0', 'utf8')
+        .update(path().relative(config.rootDir, sourcePath))
+        .update('\0', 'utf8')
+        .update(configString)
+        .update('\0', 'utf8')
+        .update(configPath.join(''))
+        .update('\0', 'utf8')
+        .update(instrument ? 'instrument' : '')
+        .update('\0', 'utf8')
+        .update(process.env.NODE_ENV || '')
+        .update('\0', 'utf8')
+        .update(process.env.BABEL_ENV || '')
+        .digest('hex');
+    },
+
+    process(sourceText, sourcePath, transformOptions) {
+      const babelOptions = {
+        ...loadBabelConfig(
+          transformOptions.config.cwd,
+          sourcePath,
+          transformOptions
+        ).options
+      };
+
+      if (
+        transformOptions !== null &&
+        transformOptions !== void 0 &&
+        transformOptions.instrument
+      ) {
+        babelOptions.auxiliaryCommentBefore = ' istanbul ignore next '; // Copied from jest-runtime transform.js
+
+        babelOptions.plugins = (babelOptions.plugins || []).concat([
+          [
+            babelIstanbulPlugin,
+            {
+              // files outside `cwd` will not be instrumented
+              cwd: transformOptions.config.rootDir,
+              exclude: []
+            }
+          ]
+        ]);
+      }
+
+      const transformResult = (0, _core().transformSync)(
+        sourceText,
+        babelOptions
+      );
+
+      if (transformResult) {
+        const {code, map} = transformResult;
+
+        if (typeof code === 'string') {
+          return {
+            code,
+            map
+          };
+        }
+      }
+
+      return sourceText;
+    }
+  };
+};
+
+const transformer = {
+  ...createTransformer(),
+  // Assigned here so only the exported transformer has `createTransformer`,
+  // instead of all created transformers by the function
+  createTransformer
+};
+module.exports = transformer;

packages/babel-jest/build/loadBabelConfig.d.ts

@@ -0,0 +1,7 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+export { loadPartialConfig } from '@babel/core';

packages/babel-jest/build/loadBabelConfig.js

@@ -0,0 +1,21 @@
+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+  value: true
+});
+Object.defineProperty(exports, 'loadPartialConfig', {
+  enumerable: true,
+  get: function () {
+    return _core().loadPartialConfig;
+  }
+});
+
+function _core() {
+  const data = require('@babel/core');
+
+  _core = function () {
+    return data;
+  };
+
+  return data;
+}

packages/babel-plugin-jest-hoist/build/index.d.ts

@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ */
+import type { PluginObj } from '@babel/core';
+import { Identifier } from '@babel/types';
+declare const _default: () => PluginObj<{
+    declareJestObjGetterIdentifier: () => Identifier;
+    jestObjGetterIdentifier?: Identifier;
+}>;
+export default _default;