747 lines
18 KiB
JavaScript
747 lines
18 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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exports.default = void 0;
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function _crypto() {
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const data = _interopRequireDefault(require('crypto'));
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_crypto = function _crypto() {
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return data;
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};
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return data;
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}
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function _path() {
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const data = _interopRequireDefault(require('path'));
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_path = function _path() {
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return data;
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};
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return data;
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}
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function _vm() {
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const data = _interopRequireDefault(require('vm'));
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_vm = function _vm() {
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return data;
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};
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return data;
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}
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function _jestUtil() {
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const data = require('jest-util');
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_jestUtil = function _jestUtil() {
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return data;
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};
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return data;
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}
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function _gracefulFs() {
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const data = _interopRequireDefault(require('graceful-fs'));
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_gracefulFs = function _gracefulFs() {
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return data;
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};
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return data;
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}
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function _core() {
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const data = require('@babel/core');
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_core = function _core() {
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return data;
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};
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return data;
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}
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function _babelPluginIstanbul() {
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const data = _interopRequireDefault(require('babel-plugin-istanbul'));
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_babelPluginIstanbul = function _babelPluginIstanbul() {
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return data;
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};
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return data;
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}
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function _convertSourceMap() {
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const data = _interopRequireDefault(require('convert-source-map'));
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_convertSourceMap = function _convertSourceMap() {
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return data;
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};
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return data;
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}
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function _jestHasteMap() {
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const data = _interopRequireDefault(require('jest-haste-map'));
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_jestHasteMap = function _jestHasteMap() {
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return data;
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};
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return data;
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}
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function _fastJsonStableStringify() {
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const data = _interopRequireDefault(require('fast-json-stable-stringify'));
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_fastJsonStableStringify = function _fastJsonStableStringify() {
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return data;
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};
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return data;
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}
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function _slash() {
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const data = _interopRequireDefault(require('slash'));
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_slash = function _slash() {
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return data;
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};
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return data;
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}
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function _writeFileAtomic() {
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const data = _interopRequireDefault(require('write-file-atomic'));
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_writeFileAtomic = function _writeFileAtomic() {
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return data;
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};
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return data;
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}
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function _realpathNative() {
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const data = require('realpath-native');
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_realpathNative = function _realpathNative() {
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return data;
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};
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return data;
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}
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var _shouldInstrument = _interopRequireDefault(require('./shouldInstrument'));
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var _enhanceUnexpectedTokenMessage = _interopRequireDefault(
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require('./enhanceUnexpectedTokenMessage')
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);
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function _interopRequireDefault(obj) {
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return obj && obj.__esModule ? obj : {default: obj};
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}
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function _defineProperty(obj, key, value) {
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if (key in obj) {
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Object.defineProperty(obj, key, {
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value: value,
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enumerable: true,
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configurable: true,
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writable: true
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});
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} else {
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obj[key] = value;
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}
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return obj;
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}
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// Use `require` to avoid TS rootDir
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const _require = require('../package.json'),
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VERSION = _require.version; // This data structure is used to avoid recalculating some data every time that
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// we need to transform a file. Since ScriptTransformer is instantiated for each
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// file we need to keep this object in the local scope of this module.
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const projectCaches = new WeakMap(); // To reset the cache for specific changesets (rather than package version).
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const CACHE_VERSION = '1';
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class ScriptTransformer {
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constructor(config) {
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_defineProperty(this, '_cache', void 0);
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_defineProperty(this, '_config', void 0);
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_defineProperty(this, '_transformCache', void 0);
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this._config = config;
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this._transformCache = new Map();
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let projectCache = projectCaches.get(config);
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if (!projectCache) {
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projectCache = {
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configString: (0, _fastJsonStableStringify().default)(this._config),
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ignorePatternsRegExp: calcIgnorePatternRegExp(this._config),
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transformRegExp: calcTransformRegExp(this._config),
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transformedFiles: new Map()
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};
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projectCaches.set(config, projectCache);
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}
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this._cache = projectCache;
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}
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_getCacheKey(fileData, filename, instrument) {
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const configString = this._cache.configString;
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const transformer = this._getTransformer(filename);
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if (transformer && typeof transformer.getCacheKey === 'function') {
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return _crypto()
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.default.createHash('md5')
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.update(
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transformer.getCacheKey(fileData, filename, configString, {
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config: this._config,
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instrument,
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rootDir: this._config.rootDir
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})
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)
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.update(CACHE_VERSION)
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.digest('hex');
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} else {
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return _crypto()
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.default.createHash('md5')
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.update(fileData)
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.update(configString)
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.update(instrument ? 'instrument' : '')
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.update(filename)
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.update(CACHE_VERSION)
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.digest('hex');
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}
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}
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_getFileCachePath(filename, content, instrument) {
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const baseCacheDir = _jestHasteMap().default.getCacheFilePath(
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this._config.cacheDirectory,
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'jest-transform-cache-' + this._config.name,
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VERSION
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);
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const cacheKey = this._getCacheKey(content, filename, instrument); // Create sub folders based on the cacheKey to avoid creating one
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// directory with many files.
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const cacheDir = _path().default.join(
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baseCacheDir,
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cacheKey[0] + cacheKey[1]
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);
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const cacheFilenamePrefix = _path()
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.default.basename(filename, _path().default.extname(filename))
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.replace(/\W/g, '');
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const cachePath = (0, _slash().default)(
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_path().default.join(cacheDir, cacheFilenamePrefix + '_' + cacheKey)
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);
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(0, _jestUtil().createDirectory)(cacheDir);
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return cachePath;
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}
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_getTransformPath(filename) {
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const transformRegExp = this._cache.transformRegExp;
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if (!transformRegExp) {
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return undefined;
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}
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for (let i = 0; i < transformRegExp.length; i++) {
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if (transformRegExp[i][0].test(filename)) {
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return transformRegExp[i][1];
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}
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}
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return undefined;
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}
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_getTransformer(filename) {
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let transform = null;
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if (!this._config.transform || !this._config.transform.length) {
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return null;
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}
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const transformPath = this._getTransformPath(filename);
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if (transformPath) {
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const transformer = this._transformCache.get(transformPath);
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if (transformer != null) {
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return transformer;
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}
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transform = require(transformPath);
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if (typeof transform.createTransformer === 'function') {
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transform = transform.createTransformer();
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}
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if (typeof transform.process !== 'function') {
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throw new TypeError(
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'Jest: a transform must export a `process` function.'
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);
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}
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this._transformCache.set(transformPath, transform);
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}
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return transform;
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}
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_instrumentFile(filename, content) {
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const result = (0, _core().transformSync)(content, {
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auxiliaryCommentBefore: ' istanbul ignore next ',
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babelrc: false,
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caller: {
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name: '@jest/transform',
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supportsStaticESM: false
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},
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configFile: false,
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filename,
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plugins: [
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[
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_babelPluginIstanbul().default,
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{
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compact: false,
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// files outside `cwd` will not be instrumented
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cwd: this._config.rootDir,
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exclude: [],
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useInlineSourceMaps: false
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}
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]
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]
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});
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if (result) {
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const code = result.code;
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if (code) {
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return code;
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}
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}
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return content;
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}
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_getRealPath(filepath) {
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try {
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return (0, _realpathNative().sync)(filepath) || filepath;
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} catch (err) {
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return filepath;
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}
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} // We don't want to expose transformers to the outside - this function is just
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// to warm up `this._transformCache`
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preloadTransformer(filepath) {
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this._getTransformer(filepath);
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}
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transformSource(filepath, content, instrument) {
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const filename = this._getRealPath(filepath);
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const transform = this._getTransformer(filename);
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const cacheFilePath = this._getFileCachePath(filename, content, instrument);
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let sourceMapPath = cacheFilePath + '.map'; // Ignore cache if `config.cache` is set (--no-cache)
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let code = this._config.cache ? readCodeCacheFile(cacheFilePath) : null;
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const shouldCallTransform = transform && this.shouldTransform(filename); // That means that the transform has a custom instrumentation
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// logic and will handle it based on `config.collectCoverage` option
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const transformWillInstrument =
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shouldCallTransform && transform && transform.canInstrument; // If we handle the coverage instrumentation, we should try to map code
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// coverage against original source with any provided source map
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const mapCoverage = instrument && !transformWillInstrument;
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if (code) {
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// This is broken: we return the code, and a path for the source map
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// directly from the cache. But, nothing ensures the source map actually
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// matches that source code. They could have gotten out-of-sync in case
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// two separate processes write concurrently to the same cache files.
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return {
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code,
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mapCoverage,
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sourceMapPath
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};
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}
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let transformed = {
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code: content,
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map: null
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};
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if (transform && shouldCallTransform) {
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const processed = transform.process(content, filename, this._config, {
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instrument
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});
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if (typeof processed === 'string') {
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transformed.code = processed;
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} else if (processed != null && typeof processed.code === 'string') {
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transformed = processed;
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} else {
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throw new TypeError(
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"Jest: a transform's `process` function must return a string, " +
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'or an object with `code` key containing this string.'
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);
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}
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}
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if (!transformed.map) {
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//Could be a potential freeze here.
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//See: https://github.com/facebook/jest/pull/5177#discussion_r158883570
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const inlineSourceMap = _convertSourceMap().default.fromSource(
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transformed.code
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);
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if (inlineSourceMap) {
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transformed.map = inlineSourceMap.toJSON();
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}
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}
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if (!transformWillInstrument && instrument) {
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code = this._instrumentFile(filename, transformed.code);
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} else {
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code = transformed.code;
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}
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if (transformed.map) {
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const sourceMapContent =
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typeof transformed.map === 'string'
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? transformed.map
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: JSON.stringify(transformed.map);
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writeCacheFile(sourceMapPath, sourceMapContent);
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} else {
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sourceMapPath = null;
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}
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writeCodeCacheFile(cacheFilePath, code);
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return {
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code,
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mapCoverage,
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sourceMapPath
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};
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}
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_transformAndBuildScript(filename, options, instrument, fileSource) {
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const isInternalModule = !!(options && options.isInternalModule);
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const isCoreModule = !!(options && options.isCoreModule);
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const content = stripShebang(
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fileSource || _gracefulFs().default.readFileSync(filename, 'utf8')
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);
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let wrappedCode;
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let sourceMapPath = null;
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let mapCoverage = false;
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const willTransform =
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!isInternalModule &&
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!isCoreModule &&
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(this.shouldTransform(filename) || instrument);
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try {
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const extraGlobals = (options && options.extraGlobals) || [];
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if (willTransform) {
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const transformedSource = this.transformSource(
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filename,
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content,
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instrument
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);
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wrappedCode = wrap(transformedSource.code, ...extraGlobals);
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sourceMapPath = transformedSource.sourceMapPath;
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mapCoverage = transformedSource.mapCoverage;
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} else {
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wrappedCode = wrap(content, ...extraGlobals);
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}
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return {
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mapCoverage,
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script: new (_vm()).default.Script(wrappedCode, {
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displayErrors: true,
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filename: isCoreModule ? 'jest-nodejs-core-' + filename : filename
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}),
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sourceMapPath
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};
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} catch (e) {
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if (e.codeFrame) {
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e.stack = e.message + '\n' + e.codeFrame;
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}
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if (
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e instanceof SyntaxError &&
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e.message.includes('Unexpected token') &&
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!e.message.includes(' expected')
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) {
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throw (0, _enhanceUnexpectedTokenMessage.default)(e);
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}
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throw e;
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}
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}
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transform(filename, options, fileSource) {
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let scriptCacheKey = undefined;
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let instrument = false;
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if (!options.isCoreModule) {
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instrument = (0, _shouldInstrument.default)(
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filename,
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options,
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this._config
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);
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scriptCacheKey = getScriptCacheKey(filename, instrument);
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const result = this._cache.transformedFiles.get(scriptCacheKey);
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if (result) {
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return result;
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}
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}
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const result = this._transformAndBuildScript(
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filename,
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options,
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instrument,
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fileSource
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);
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if (scriptCacheKey) {
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this._cache.transformedFiles.set(scriptCacheKey, result);
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}
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return result;
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}
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transformJson(filename, options, fileSource) {
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const isInternalModule = options.isInternalModule;
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const isCoreModule = options.isCoreModule;
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const willTransform =
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!isInternalModule && !isCoreModule && this.shouldTransform(filename);
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|
|
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if (willTransform) {
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const _this$transformSource = this.transformSource(
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filename,
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fileSource,
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false
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),
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transformedJsonSource = _this$transformSource.code;
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return transformedJsonSource;
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}
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return fileSource;
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}
|
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/**
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* @deprecated use `this.shouldTransform` instead
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*/
|
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// @ts-ignore: Unused and private - remove in Jest 25
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|
|
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_shouldTransform(filename) {
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return this.shouldTransform(filename);
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}
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shouldTransform(filename) {
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const ignoreRegexp = this._cache.ignorePatternsRegExp;
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const isIgnored = ignoreRegexp ? ignoreRegexp.test(filename) : false;
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return (
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!!this._config.transform && !!this._config.transform.length && !isIgnored
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);
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}
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}
|
|
|
|
exports.default = ScriptTransformer;
|
|
|
|
_defineProperty(ScriptTransformer, 'EVAL_RESULT_VARIABLE', void 0);
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|
|
const removeFile = path => {
|
|
try {
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|
_gracefulFs().default.unlinkSync(path);
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|
} catch (e) {}
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|
};
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|
|
const stripShebang = content => {
|
|
// If the file data starts with a shebang remove it. Leaves the empty line
|
|
// to keep stack trace line numbers correct.
|
|
if (content.startsWith('#!')) {
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return content.replace(/^#!.*/, '');
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} else {
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return content;
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}
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};
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/**
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|
* This is like `writeCacheFile` but with an additional sanity checksum. We
|
|
* cannot use the same technique for source maps because we expose source map
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|
* cache file paths directly to callsites, with the expectation they can read
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* it right away. This is not a great system, because source map cache file
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* could get corrupted, out-of-sync, etc.
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*/
|
|
|
|
function writeCodeCacheFile(cachePath, code) {
|
|
const checksum = _crypto()
|
|
.default.createHash('md5')
|
|
.update(code)
|
|
.digest('hex');
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|
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writeCacheFile(cachePath, checksum + '\n' + code);
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|
}
|
|
/**
|
|
* Read counterpart of `writeCodeCacheFile`. We verify that the content of the
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|
* file matches the checksum, in case some kind of corruption happened. This
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|
* could happen if an older version of `jest-runtime` writes non-atomically to
|
|
* the same cache, for example.
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|
*/
|
|
|
|
function readCodeCacheFile(cachePath) {
|
|
const content = readCacheFile(cachePath);
|
|
|
|
if (content == null) {
|
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return null;
|
|
}
|
|
|
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const code = content.substr(33);
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|
|
|
const checksum = _crypto()
|
|
.default.createHash('md5')
|
|
.update(code)
|
|
.digest('hex');
|
|
|
|
if (checksum === content.substr(0, 32)) {
|
|
return code;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
/**
|
|
* Writing to the cache atomically relies on 'rename' being atomic on most
|
|
* file systems. Doing atomic write reduces the risk of corruption by avoiding
|
|
* two processes to write to the same file at the same time. It also reduces
|
|
* the risk of reading a file that's being overwritten at the same time.
|
|
*/
|
|
|
|
const writeCacheFile = (cachePath, fileData) => {
|
|
try {
|
|
_writeFileAtomic().default.sync(cachePath, fileData, {
|
|
encoding: 'utf8'
|
|
});
|
|
} catch (e) {
|
|
if (cacheWriteErrorSafeToIgnore(e, cachePath)) {
|
|
return;
|
|
}
|
|
|
|
e.message =
|
|
'jest: failed to cache transform results in: ' +
|
|
cachePath +
|
|
'\nFailure message: ' +
|
|
e.message;
|
|
removeFile(cachePath);
|
|
throw e;
|
|
}
|
|
};
|
|
/**
|
|
* On Windows, renames are not atomic, leading to EPERM exceptions when two
|
|
* processes attempt to rename to the same target file at the same time.
|
|
* If the target file exists we can be reasonably sure another process has
|
|
* legitimately won a cache write race and ignore the error.
|
|
*/
|
|
|
|
const cacheWriteErrorSafeToIgnore = (e, cachePath) =>
|
|
process.platform === 'win32' &&
|
|
e.code === 'EPERM' &&
|
|
_gracefulFs().default.existsSync(cachePath);
|
|
|
|
const readCacheFile = cachePath => {
|
|
if (!_gracefulFs().default.existsSync(cachePath)) {
|
|
return null;
|
|
}
|
|
|
|
let fileData;
|
|
|
|
try {
|
|
fileData = _gracefulFs().default.readFileSync(cachePath, 'utf8');
|
|
} catch (e) {
|
|
e.message =
|
|
'jest: failed to read cache file: ' +
|
|
cachePath +
|
|
'\nFailure message: ' +
|
|
e.message;
|
|
removeFile(cachePath);
|
|
throw e;
|
|
}
|
|
|
|
if (fileData == null) {
|
|
// We must have somehow created the file but failed to write to it,
|
|
// let's delete it and retry.
|
|
removeFile(cachePath);
|
|
}
|
|
|
|
return fileData;
|
|
};
|
|
|
|
const getScriptCacheKey = (filename, instrument) => {
|
|
const mtime = _gracefulFs().default.statSync(filename).mtime;
|
|
|
|
return filename + '_' + mtime.getTime() + (instrument ? '_instrumented' : '');
|
|
};
|
|
|
|
const calcIgnorePatternRegExp = config => {
|
|
if (
|
|
!config.transformIgnorePatterns ||
|
|
config.transformIgnorePatterns.length === 0
|
|
) {
|
|
return;
|
|
}
|
|
|
|
return new RegExp(config.transformIgnorePatterns.join('|'));
|
|
};
|
|
|
|
const calcTransformRegExp = config => {
|
|
if (!config.transform.length) {
|
|
return;
|
|
}
|
|
|
|
const transformRegexp = [];
|
|
|
|
for (let i = 0; i < config.transform.length; i++) {
|
|
transformRegexp.push([
|
|
new RegExp(config.transform[i][0]),
|
|
config.transform[i][1]
|
|
]);
|
|
}
|
|
|
|
return transformRegexp;
|
|
};
|
|
|
|
const wrap = (content, ...extras) => {
|
|
const globals = new Set([
|
|
'module',
|
|
'exports',
|
|
'require',
|
|
'__dirname',
|
|
'__filename',
|
|
'global',
|
|
'jest',
|
|
...extras
|
|
]);
|
|
return (
|
|
'({"' +
|
|
ScriptTransformer.EVAL_RESULT_VARIABLE +
|
|
`":function(${Array.from(globals).join(',')}){` +
|
|
content +
|
|
'\n}});'
|
|
);
|
|
}; // TODO: Can this be added to the static property?
|
|
|
|
ScriptTransformer.EVAL_RESULT_VARIABLE = 'Object.<anonymous>';
|