'use strict';Object.defineProperty(exports, "__esModule", { value: true });var _crypto;















function _load_crypto() {return _crypto = _interopRequireDefault(require('crypto'));}var _path;
function _load_path() {return _path = _interopRequireDefault(require('path'));}var _vm;
function _load_vm() {return _vm = _interopRequireDefault(require('vm'));}var _jestUtil;
function _load_jestUtil() {return _jestUtil = require('jest-util');}var _gracefulFs;
function _load_gracefulFs() {return _gracefulFs = _interopRequireDefault(require('graceful-fs'));}var _babelCore;
function _load_babelCore() {return _babelCore = require('babel-core');}var _babelPluginIstanbul;
function _load_babelPluginIstanbul() {return _babelPluginIstanbul = _interopRequireDefault(require('babel-plugin-istanbul'));}var _convertSourceMap;
function _load_convertSourceMap() {return _convertSourceMap = _interopRequireDefault(require('convert-source-map'));}var _jestHasteMap;
function _load_jestHasteMap() {return _jestHasteMap = _interopRequireDefault(require('jest-haste-map'));}var _jsonStableStringify;
function _load_jsonStableStringify() {return _jsonStableStringify = _interopRequireDefault(require('json-stable-stringify'));}var _slash;
function _load_slash() {return _slash = _interopRequireDefault(require('slash'));}var _package;
function _load_package() {return _package = require('../package.json');}var _should_instrument;
function _load_should_instrument() {return _should_instrument = _interopRequireDefault(require('./should_instrument'));}var _writeFileAtomic;
function _load_writeFileAtomic() {return _writeFileAtomic = _interopRequireDefault(require('write-file-atomic'));}var _realpathNative;
function _load_realpathNative() {return _realpathNative = require('realpath-native');}function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}










const cache = new Map(); /**
                          * Copyright (c) 2014-present, Facebook, Inc. 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 configToJsonMap = new Map(); // Cache regular expressions to test whether the file needs to be preprocessed
const ignoreCache = new WeakMap(); // To reset the cache for specific changesets (rather than package version).
const CACHE_VERSION = '1';class ScriptTransformer {



  constructor(config) {
    this._config = config;
    this._transformCache = new Map();
  }

  _getCacheKey(
  fileData,
  filename,
  instrument,
  mapCoverage)
  {
    if (!configToJsonMap.has(this._config)) {
      // We only need this set of config options that can likely influence
      // cached output instead of all config options.
      configToJsonMap.set(this._config, (0, (_jsonStableStringify || _load_jsonStableStringify()).default)(this._config));
    }
    const configString = configToJsonMap.get(this._config) || '';
    const transformer = this._getTransformer(filename);

    if (transformer && typeof transformer.getCacheKey === 'function') {
      return (_crypto || _load_crypto()).default.
      createHash('md5').
      update(
      transformer.getCacheKey(fileData, filename, configString, {
        instrument,
        mapCoverage,
        rootDir: this._config.rootDir })).


      update(CACHE_VERSION).
      digest('hex');
    } else {
      return (_crypto || _load_crypto()).default.
      createHash('md5').
      update(fileData).
      update(configString).
      update(instrument ? 'instrument' : '').
      update(mapCoverage ? 'mapCoverage' : '').
      update(CACHE_VERSION).
      digest('hex');
    }
  }

  _getFileCachePath(
  filename,
  content,
  instrument,
  mapCoverage)
  {
    const baseCacheDir = (_jestHasteMap || _load_jestHasteMap()).default.getCacheFilePath(
    this._config.cacheDirectory,
    'jest-transform-cache-' + this._config.name, (_package || _load_package()).version);


    const cacheKey = this._getCacheKey(
    content,
    filename,
    instrument,
    mapCoverage);

    // Create sub folders based on the cacheKey to avoid creating one
    // directory with many files.
    const cacheDir = (_path || _load_path()).default.join(baseCacheDir, cacheKey[0] + cacheKey[1]);
    const cachePath = (0, (_slash || _load_slash()).default)(
    (_path || _load_path()).default.join(
    cacheDir,
    (_path || _load_path()).default.basename(filename, (_path || _load_path()).default.extname(filename)) + '_' + cacheKey));


    (0, (_jestUtil || _load_jestUtil()).createDirectory)(cacheDir);

    return cachePath;
  }

  _getTransformPath(filename) {
    for (let i = 0; i < this._config.transform.length; i++) {
      if (new RegExp(this._config.transform[i][0]).test(filename)) {
        return this._config.transform[i][1];
      }
    }
    return null;
  }

  _getTransformer(filename) {
    let transform;
    if (!this._config.transform || !this._config.transform.length) {
      return null;
    }

    const transformPath = this._getTransformPath(filename);
    if (transformPath) {
      const transformer = this._transformCache.get(transformPath);
      if (transformer != null) {
        return transformer;
      }

      // $FlowFixMe
      transform = require(transformPath);
      if (typeof transform.process !== 'function') {
        throw new TypeError(
        'Jest: a transform must export a `process` function.');

      }
      if (typeof transform.createTransformer === 'function') {
        transform = transform.createTransformer();
      }
      this._transformCache.set(transformPath, transform);
    }
    return transform;
  }

  _instrumentFile(filename, content) {
    return (0, (_babelCore || _load_babelCore()).transform)(content, {
      auxiliaryCommentBefore: ' istanbul ignore next ',
      babelrc: false,
      filename,
      plugins: [
      [(_babelPluginIstanbul || _load_babelPluginIstanbul()).default,

      {
        // files outside `cwd` will not be instrumented
        cwd: this._config.rootDir,
        exclude: [],
        useInlineSourceMaps: false }]],



      retainLines: true }).
    code;
  }

  _getRealPath(filepath) {
    try {
      return (0, (_realpathNative || _load_realpathNative()).sync)(filepath) || filepath;
    } catch (err) {
      return filepath;
    }
  }

  transformSource(
  filepath,
  content,
  instrument,
  mapCoverage)
  {
    const filename = this._getRealPath(filepath);
    const transform = this._getTransformer(filename);
    const cacheFilePath = this._getFileCachePath(
    filename,
    content,
    instrument,
    mapCoverage);

    let sourceMapPath = cacheFilePath + '.map';
    // Ignore cache if `config.cache` is set (--no-cache)
    let code = this._config.cache ? readCodeCacheFile(cacheFilePath) : null;

    if (code) {
      // This is broken: we return the code, and a path for the source map
      // directly from the cache. But, nothing ensures the source map actually
      // matches that source code. They could have gotten out-of-sync in case
      // two separate processes write concurrently to the same cache files.
      return {
        code,
        sourceMapPath };

    }

    let transformed = {
      code: content,
      map: null };


    if (transform && shouldTransform(filename, this._config)) {
      const processed = transform.process(content, filename, this._config, {
        instrument });


      if (typeof processed === 'string') {
        transformed.code = processed;
      } else if (processed != null && typeof processed.code === 'string') {
        transformed = processed;
      } else {
        throw new TypeError(
        "Jest: a transform's `process` function must return a string, " +
        'or an object with `code` key containing this string.');

      }
    }

    if (mapCoverage) {
      if (!transformed.map) {
        const inlineSourceMap = (_convertSourceMap || _load_convertSourceMap()).default.fromSource(transformed.code);
        if (inlineSourceMap) {
          transformed.map = inlineSourceMap.toJSON();
        }
      }
    }

    // That means that the transform has a custom instrumentation
    // logic and will handle it based on `config.collectCoverage` option
    const transformDidInstrument = transform && transform.canInstrument;

    if (!transformDidInstrument && instrument) {
      code = this._instrumentFile(filename, transformed.code);
    } else {
      code = transformed.code;
    }

    if (instrument && mapCoverage && transformed.map) {
      const sourceMapContent =
      typeof transformed.map === 'string' ?
      transformed.map :
      JSON.stringify(transformed.map);
      writeCacheFile(sourceMapPath, sourceMapContent);
    } else {
      sourceMapPath = null;
    }

    writeCodeCacheFile(cacheFilePath, code);

    return {
      code,
      sourceMapPath };

  }

  _transformAndBuildScript(
  filename,
  options,
  instrument,
  fileSource)
  {
    const isInternalModule = !!(options && options.isInternalModule);
    const isCoreModule = !!(options && options.isCoreModule);
    const content = stripShebang(
    fileSource || (_gracefulFs || _load_gracefulFs()).default.readFileSync(filename, 'utf8'));


    let wrappedCode;
    let sourceMapPath = null;

    const willTransform =
    !isInternalModule &&
    !isCoreModule && (
    shouldTransform(filename, this._config) || instrument);

    try {
      if (willTransform) {
        const transformedSource = this.transformSource(
        filename,
        content,
        instrument,
        !!(options && options.mapCoverage));


        wrappedCode = wrap(transformedSource.code);
        sourceMapPath = transformedSource.sourceMapPath;
      } else {
        wrappedCode = wrap(content);
      }

      return {
        script: new (_vm || _load_vm()).default.Script(wrappedCode, {
          displayErrors: true,
          filename: isCoreModule ? 'jest-nodejs-core-' + filename : filename }),

        sourceMapPath };

    } catch (e) {
      if (e.codeFrame) {
        e.stack = e.codeFrame;
      }

      throw e;
    }
  }

  transform(
  filename,
  options,
  fileSource)
  {
    let scriptCacheKey = null;
    let instrument = false;
    let result = '';

    if (!options.isCoreModule) {
      instrument = (0, (_should_instrument || _load_should_instrument()).default)(filename, options, this._config);
      scriptCacheKey = getScriptCacheKey(filename, this._config, instrument);
      result = cache.get(scriptCacheKey);
    }

    if (result) {
      return result;
    }

    result = this._transformAndBuildScript(
    filename,
    options,
    instrument,
    fileSource);


    if (scriptCacheKey) {
      cache.set(scriptCacheKey, result);
    }

    return result;
  }}exports.default = ScriptTransformer;


const removeFile = path => {
  try {
    (_gracefulFs || _load_gracefulFs()).default.unlinkSync(path);
  } catch (e) {}
};

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('#!')) {
    return content.replace(/^#!.*/, '');
  } else {
    return content;
  }
};

/**
    * This is like `writeCacheFile` but with an additional sanity checksum. We
    * cannot use the same technique for source maps because we expose source map
    * cache file paths directly to callsites, with the expectation they can read
    * it right away. This is not a great system, because source map cache file
    * could get corrupted, out-of-sync, etc.
    */
function writeCodeCacheFile(cachePath, code) {
  const checksum = (_crypto || _load_crypto()).default.
  createHash('md5').
  update(code).
  digest('hex');
  writeCacheFile(cachePath, checksum + '\n' + code);
}

/**
   * Read counterpart of `writeCodeCacheFile`. We verify that the content of the
   * file matches the checksum, in case some kind of corruption happened. This
   * could happen if an older version of `jest-runtime` writes non-atomically to
   * the same cache, for example.
   */
function readCodeCacheFile(cachePath) {
  const content = readCacheFile(cachePath);
  if (content == null) {
    return null;
  }
  const code = content.substr(33);
  const checksum = (_crypto || _load_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 || _load_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) => {
  return (
    process.platform === 'win32' &&
    e.code === 'EPERM' &&
    (_gracefulFs || _load_gracefulFs()).default.existsSync(cachePath));

};

const readCacheFile = cachePath => {
  if (!(_gracefulFs || _load_gracefulFs()).default.existsSync(cachePath)) {
    return null;
  }

  let fileData;
  try {
    fileData = (_gracefulFs || _load_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, config, instrument) => {
  const mtime = (_gracefulFs || _load_gracefulFs()).default.statSync(filename).mtime;
  return filename + '_' + mtime.getTime() + (instrument ? '_instrumented' : '');
};

const shouldTransform = (filename, config) => {
  if (!ignoreCache.has(config)) {
    if (
    !config.transformIgnorePatterns ||
    config.transformIgnorePatterns.length === 0)
    {
      ignoreCache.set(config, null);
    } else {
      ignoreCache.set(
      config,
      new RegExp(config.transformIgnorePatterns.join('|')));

    }
  }

  const ignoreRegexp = ignoreCache.get(config);
  const isIgnored = ignoreRegexp ? ignoreRegexp.test(filename) : false;
  return !!config.transform && !!config.transform.length && !isIgnored;
};

const wrap = content =>
'({"' +
ScriptTransformer.EVAL_RESULT_VARIABLE +
'":function(module,exports,require,__dirname,__filename,global,jest){' +
content +
'\n}});';

ScriptTransformer.EVAL_RESULT_VARIABLE = 'Object.<anonymous>';