142 lines
5.0 KiB
JavaScript
142 lines
5.0 KiB
JavaScript
'use strict';
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var _crypto;
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function _load_crypto() {
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return _crypto = _interopRequireDefault(require('crypto'));
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}
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var _fs;
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function _load_fs() {
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return _fs = _interopRequireDefault(require('fs'));
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}
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var _path;
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function _load_path() {
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return _path = _interopRequireDefault(require('path'));
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}
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var _babelPresetJest;
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function _load_babelPresetJest() {
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return _babelPresetJest = _interopRequireDefault(require('babel-preset-jest'));
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}
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var _babelCore;
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function _load_babelCore() {
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return _babelCore = require('babel-core');
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}
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var _babelPluginIstanbul;
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function _load_babelPluginIstanbul() {
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return _babelPluginIstanbul = _interopRequireDefault(require('babel-plugin-istanbul'));
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}
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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/**
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* Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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*
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*/
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const BABELRC_FILENAME = '.babelrc';
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const BABELRC_JS_FILENAME = '.babelrc.js';
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const BABEL_CONFIG_KEY = 'babel';
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const PACKAGE_JSON = 'package.json';
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const THIS_FILE = (_fs || _load_fs()).default.readFileSync(__filename);
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const createTransformer = options => {
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const cache = Object.create(null);
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const getBabelRC = filename => {
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const paths = [];
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let directory = filename;
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while (directory !== (directory = (_path || _load_path()).default.dirname(directory))) {
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if (cache[directory]) {
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break;
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}
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paths.push(directory);
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const configFilePath = (_path || _load_path()).default.join(directory, BABELRC_FILENAME);
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if ((_fs || _load_fs()).default.existsSync(configFilePath)) {
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cache[directory] = (_fs || _load_fs()).default.readFileSync(configFilePath, 'utf8');
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break;
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}
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const configJsFilePath = (_path || _load_path()).default.join(directory, BABELRC_JS_FILENAME);
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if ((_fs || _load_fs()).default.existsSync(configJsFilePath)) {
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// $FlowFixMe
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cache[directory] = JSON.stringify(require(configJsFilePath));
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break;
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}
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const resolvedJsonFilePath = (_path || _load_path()).default.join(directory, PACKAGE_JSON);
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const packageJsonFilePath = resolvedJsonFilePath === PACKAGE_JSON ? (_path || _load_path()).default.resolve(directory, PACKAGE_JSON) : resolvedJsonFilePath;
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if ((_fs || _load_fs()).default.existsSync(packageJsonFilePath)) {
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// $FlowFixMe
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const packageJsonFileContents = require(packageJsonFilePath);
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if (packageJsonFileContents[BABEL_CONFIG_KEY]) {
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cache[directory] = JSON.stringify(packageJsonFileContents[BABEL_CONFIG_KEY]);
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break;
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}
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}
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}
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paths.forEach(directoryPath => cache[directoryPath] = cache[directory]);
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return cache[directory] || '';
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};
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options = Object.assign({}, options, {
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plugins: options && options.plugins || [],
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presets: (options && options.presets || []).concat([(_babelPresetJest || _load_babelPresetJest()).default]),
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sourceMaps: 'both'
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});
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delete options.cacheDirectory;
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delete options.filename;
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return {
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canInstrument: true,
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getCacheKey(fileData, filename, configString, _ref) {
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let instrument = _ref.instrument,
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rootDir = _ref.rootDir;
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return (_crypto || _load_crypto()).default.createHash('md5').update(THIS_FILE).update('\0', 'utf8').update(fileData).update('\0', 'utf8').update((_path || _load_path()).default.relative(rootDir, filename)).update('\0', 'utf8').update(configString).update('\0', 'utf8').update(getBabelRC(filename)).update('\0', 'utf8').update(instrument ? 'instrument' : '').digest('hex');
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},
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process(src, filename, config, transformOptions) {
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const altExts = config.moduleFileExtensions.map(extension => '.' + extension);
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if ((_babelCore || _load_babelCore()).util && !(_babelCore || _load_babelCore()).util.canCompile(filename, altExts)) {
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return src;
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}
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const theseOptions = Object.assign({ filename }, options);
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if (transformOptions && transformOptions.instrument) {
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theseOptions.auxiliaryCommentBefore = ' istanbul ignore next ';
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// Copied from jest-runtime transform.js
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theseOptions.plugins = theseOptions.plugins.concat([[(_babelPluginIstanbul || _load_babelPluginIstanbul()).default, {
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// files outside `cwd` will not be instrumented
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cwd: config.rootDir,
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exclude: []
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}]]);
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}
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// babel v7 might return null in the case when the file has been ignored.
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const transformResult = (0, (_babelCore || _load_babelCore()).transform)(src, theseOptions);
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if (!transformResult) {
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return src;
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}
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const shouldReturnCodeOnly = transformOptions == null || transformOptions.returnSourceString == null || transformOptions.returnSourceString === true;
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return shouldReturnCodeOnly ? transformResult.code : transformResult;
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}
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};
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};
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module.exports = createTransformer();
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module.exports.createTransformer = createTransformer; |