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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.createScriptTransformer = createScriptTransformer;
exports.createTranspilingRequire = createTranspilingRequire;
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 _babelPluginIstanbul() {
const data = _interopRequireDefault(require('babel-plugin-istanbul'));
_babelPluginIstanbul = function () {
return data;
};
return data;
}
function _convertSourceMap() {
const data = require('convert-source-map');
_convertSourceMap = function () {
return data;
};
return data;
}
function _fastJsonStableStringify() {
const data = _interopRequireDefault(require('fast-json-stable-stringify'));
_fastJsonStableStringify = function () {
return data;
};
return data;
}
function fs() {
const data = _interopRequireWildcard(require('graceful-fs'));
fs = function () {
return data;
};
return data;
}
function _pirates() {
const data = require('pirates');
_pirates = function () {
return data;
};
return data;
}
function _slash() {
const data = _interopRequireDefault(require('slash'));
_slash = function () {
return data;
};
return data;
}
function _writeFileAtomic() {
const data = require('write-file-atomic');
_writeFileAtomic = function () {
return data;
};
return data;
}
function _jestHasteMap() {
const data = _interopRequireDefault(require('jest-haste-map'));
_jestHasteMap = function () {
return data;
};
return data;
}
function _jestUtil() {
const data = require('jest-util');
_jestUtil = function () {
return data;
};
return data;
}
var _enhanceUnexpectedTokenMessage = _interopRequireDefault(
require('./enhanceUnexpectedTokenMessage')
);
var _runtimeErrorsAndWarnings = require('./runtimeErrorsAndWarnings');
var _shouldInstrument = _interopRequireDefault(require('./shouldInstrument'));
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {default: obj};
}
function _getRequireWildcardCache(nodeInterop) {
if (typeof WeakMap !== 'function') return null;
var cacheBabelInterop = new WeakMap();
var cacheNodeInterop = new WeakMap();
return (_getRequireWildcardCache = function (nodeInterop) {
return nodeInterop ? cacheNodeInterop : cacheBabelInterop;
})(nodeInterop);
}
function _interopRequireWildcard(obj, nodeInterop) {
if (!nodeInterop && obj && obj.__esModule) {
return obj;
}
if (obj === null || (typeof obj !== 'object' && typeof obj !== 'function')) {
return {default: obj};
}
var cache = _getRequireWildcardCache(nodeInterop);
if (cache && cache.has(obj)) {
return cache.get(obj);
}
var newObj = {};
var hasPropertyDescriptor =
Object.defineProperty && Object.getOwnPropertyDescriptor;
for (var key in obj) {
if (key !== 'default' && 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) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
// @ts-expect-error: should just be `require.resolve`, but the tests mess that up
// Use `require` to avoid TS rootDir
const {version: VERSION} = require('../package.json');
// This data structure is used to avoid recalculating some data every time that
// we need to transform a file. Since ScriptTransformer is instantiated for each
// file we need to keep this object in the local scope of this module.
const projectCaches = new Map();
// To reset the cache for specific changesets (rather than package version).
const CACHE_VERSION = '1';
async function waitForPromiseWithCleanup(promise, cleanup) {
try {
await promise;
} finally {
cleanup();
}
}
// type predicate
function isTransformerFactory(t) {
return typeof t.createTransformer === 'function';
}
class ScriptTransformer {
_cache;
_transformCache = new Map();
_transformsAreLoaded = false;
constructor(_config, _cacheFS) {
this._config = _config;
this._cacheFS = _cacheFS;
const configString = (0, _fastJsonStableStringify().default)(this._config);
let projectCache = projectCaches.get(configString);
if (!projectCache) {
projectCache = {
configString,
ignorePatternsRegExp: calcIgnorePatternRegExp(this._config),
transformRegExp: calcTransformRegExp(this._config),
transformedFiles: new Map()
};
projectCaches.set(configString, projectCache);
}
this._cache = projectCache;
}
_buildCacheKeyFromFileInfo(
fileData,
filename,
transformOptions,
transformerCacheKey
) {
if (transformerCacheKey != null) {
return (0, _crypto().createHash)('sha1')
.update(transformerCacheKey)
.update(CACHE_VERSION)
.digest('hex')
.substring(0, 32);
}
return (0, _crypto().createHash)('sha1')
.update(fileData)
.update(transformOptions.configString)
.update(transformOptions.instrument ? 'instrument' : '')
.update(filename)
.update(CACHE_VERSION)
.digest('hex')
.substring(0, 32);
}
_buildTransformCacheKey(pattern, filepath) {
return pattern + filepath;
}
_getCacheKey(fileData, filename, options) {
const configString = this._cache.configString;
const {transformer, transformerConfig = {}} =
this._getTransformer(filename) ?? {};
let transformerCacheKey = undefined;
const transformOptions = {
...options,
cacheFS: this._cacheFS,
config: this._config,
configString,
transformerConfig
};
if (typeof transformer?.getCacheKey === 'function') {
transformerCacheKey = transformer.getCacheKey(
fileData,
filename,
transformOptions
);
}
return this._buildCacheKeyFromFileInfo(
fileData,
filename,
transformOptions,
transformerCacheKey
);
}
async _getCacheKeyAsync(fileData, filename, options) {
const configString = this._cache.configString;
const {transformer, transformerConfig = {}} =
this._getTransformer(filename) ?? {};
let transformerCacheKey = undefined;
const transformOptions = {
...options,
cacheFS: this._cacheFS,
config: this._config,
configString,
transformerConfig
};
if (transformer) {
const getCacheKey =
transformer.getCacheKeyAsync ?? transformer.getCacheKey;
if (typeof getCacheKey === 'function') {
transformerCacheKey = await getCacheKey(
fileData,
filename,
transformOptions
);
}
}
return this._buildCacheKeyFromFileInfo(
fileData,
filename,
transformOptions,
transformerCacheKey
);
}
_createCachedFilename(filename, cacheKey) {
const HasteMapClass = _jestHasteMap().default.getStatic(this._config);
const baseCacheDir = HasteMapClass.getCacheFilePath(
this._config.cacheDirectory,
`jest-transform-cache-${this._config.id}`,
VERSION
);
// Create sub folders based on the cacheKey to avoid creating one
// directory with many files.
const cacheDir = path().join(baseCacheDir, cacheKey[0] + cacheKey[1]);
const cacheFilenamePrefix = path()
.basename(filename, path().extname(filename))
.replace(/\W/g, '');
return (0, _slash().default)(
path().join(cacheDir, `${cacheFilenamePrefix}_${cacheKey}`)
);
}
_getFileCachePath(filename, content, options) {
const cacheKey = this._getCacheKey(content, filename, options);
return this._createCachedFilename(filename, cacheKey);
}
async _getFileCachePathAsync(filename, content, options) {
const cacheKey = await this._getCacheKeyAsync(content, filename, options);
return this._createCachedFilename(filename, cacheKey);
}
_getTransformPatternAndPath(filename) {
const transformEntry = this._cache.transformRegExp;
if (transformEntry == null) {
return undefined;
}
for (let i = 0; i < transformEntry.length; i++) {
const [transformRegExp, transformPath] = transformEntry[i];
if (transformRegExp.test(filename)) {
return [transformRegExp.source, transformPath];
}
}
return undefined;
}
_getTransformPath(filename) {
const transformInfo = this._getTransformPatternAndPath(filename);
if (!Array.isArray(transformInfo)) {
return undefined;
}
return transformInfo[1];
}
async loadTransformers() {
await Promise.all(
this._config.transform.map(
async ([transformPattern, transformPath, transformerConfig], i) => {
let transformer = await (0, _jestUtil().requireOrImportModule)(
transformPath
);
if (transformer == null) {
throw new Error(
(0, _runtimeErrorsAndWarnings.makeInvalidTransformerError)(
transformPath
)
);
}
if (isTransformerFactory(transformer)) {
transformer = await transformer.createTransformer(
transformerConfig
);
}
if (
typeof transformer.process !== 'function' &&
typeof transformer.processAsync !== 'function'
) {
throw new Error(
(0, _runtimeErrorsAndWarnings.makeInvalidTransformerError)(
transformPath
)
);
}
const res = {
transformer,
transformerConfig
};
const transformCacheKey = this._buildTransformCacheKey(
this._cache.transformRegExp?.[i]?.[0].source ??
new RegExp(transformPattern).source,
transformPath
);
this._transformCache.set(transformCacheKey, res);
}
)
);
this._transformsAreLoaded = true;
}
_getTransformer(filename) {
if (!this._transformsAreLoaded) {
throw new Error(
'Jest: Transformers have not been loaded yet - make sure to run `loadTransformers` and wait for it to complete before starting to transform files'
);
}
if (this._config.transform.length === 0) {
return null;
}
const transformPatternAndPath = this._getTransformPatternAndPath(filename);
if (!Array.isArray(transformPatternAndPath)) {
return null;
}
const [transformPattern, transformPath] = transformPatternAndPath;
const transformCacheKey = this._buildTransformCacheKey(
transformPattern,
transformPath
);
const transformer = this._transformCache.get(transformCacheKey);
if (transformer !== undefined) {
return transformer;
}
throw new Error(
`Jest was unable to load the transformer defined for ${filename}. This is a bug in Jest, please open up an issue`
);
}
_instrumentFile(filename, input, canMapToInput, options) {
const inputCode = typeof input === 'string' ? input : input.code;
const inputMap = typeof input === 'string' ? null : input.map;
const result = (0, _core().transformSync)(inputCode, {
auxiliaryCommentBefore: ' istanbul ignore next ',
babelrc: false,
caller: {
name: '@jest/transform',
supportsDynamicImport: options.supportsDynamicImport,
supportsExportNamespaceFrom: options.supportsExportNamespaceFrom,
supportsStaticESM: options.supportsStaticESM,
supportsTopLevelAwait: options.supportsTopLevelAwait
},
configFile: false,
filename,
plugins: [
[
_babelPluginIstanbul().default,
{
compact: false,
// files outside `cwd` will not be instrumented
cwd: this._config.rootDir,
exclude: [],
extension: false,
inputSourceMap: inputMap,
useInlineSourceMaps: false
}
]
],
sourceMaps: canMapToInput ? 'both' : false
});
if (result?.code != null) {
return result;
}
return input;
}
_buildTransformResult(
filename,
cacheFilePath,
content,
transformer,
shouldCallTransform,
options,
processed,
sourceMapPath
) {
let transformed = {
code: content,
map: null
};
if (transformer && shouldCallTransform) {
if (processed != null && typeof processed.code === 'string') {
transformed = processed;
} else {
const transformPath = this._getTransformPath(filename);
(0, _jestUtil().invariant)(transformPath);
throw new Error(
(0, _runtimeErrorsAndWarnings.makeInvalidReturnValueError)(
transformPath
)
);
}
}
if (transformed.map == null || transformed.map === '') {
try {
//Could be a potential freeze here.
//See: https://github.com/jestjs/jest/pull/5177#discussion_r158883570
const inlineSourceMap = (0, _convertSourceMap().fromSource)(
transformed.code
);
if (inlineSourceMap) {
transformed.map = inlineSourceMap.toObject();
}
} catch {
const transformPath = this._getTransformPath(filename);
(0, _jestUtil().invariant)(transformPath);
console.warn(
(0, _runtimeErrorsAndWarnings.makeInvalidSourceMapWarning)(
filename,
transformPath
)
);
}
}
// That means that the transform has a custom instrumentation
// logic and will handle it based on `config.collectCoverage` option
const transformWillInstrument =
shouldCallTransform && transformer && transformer.canInstrument;
// Apply instrumentation to the code if necessary, keeping the instrumented code and new map
let map = transformed.map;
let code;
if (transformWillInstrument !== true && options.instrument) {
/**
* We can map the original source code to the instrumented code ONLY if
* - the process of transforming the code produced a source map e.g. ts-jest
* - we did not transform the source code
*
* Otherwise we cannot make any statements about how the instrumented code corresponds to the original code,
* and we should NOT emit any source maps
*
*/
const shouldEmitSourceMaps =
(transformer != null && map != null) || transformer == null;
const instrumented = this._instrumentFile(
filename,
transformed,
shouldEmitSourceMaps,
options
);
code =
typeof instrumented === 'string' ? instrumented : instrumented.code;
map = typeof instrumented === 'string' ? null : instrumented.map;
} else {
code = transformed.code;
}
if (map != null) {
const sourceMapContent =
typeof map === 'string' ? map : JSON.stringify(map);
(0, _jestUtil().invariant)(
sourceMapPath,
'We should always have default sourceMapPath'
);
writeCacheFile(sourceMapPath, sourceMapContent);
} else {
sourceMapPath = null;
}
writeCodeCacheFile(cacheFilePath, code);
return {
code,
originalCode: content,
sourceMapPath
};
}
transformSource(filepath, content, options) {
const filename = (0, _jestUtil().tryRealpath)(filepath);
const {transformer, transformerConfig = {}} =
this._getTransformer(filename) ?? {};
const cacheFilePath = this._getFileCachePath(filename, content, options);
const sourceMapPath = `${cacheFilePath}.map`;
// Ignore cache if `config.cache` is set (--no-cache)
const code = this._config.cache ? readCodeCacheFile(cacheFilePath) : null;
if (code != null) {
// 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,
originalCode: content,
sourceMapPath
};
}
let processed = null;
let shouldCallTransform = false;
if (transformer && this.shouldTransform(filename)) {
shouldCallTransform = true;
assertSyncTransformer(transformer, this._getTransformPath(filename));
processed = transformer.process(content, filename, {
...options,
cacheFS: this._cacheFS,
config: this._config,
configString: this._cache.configString,
transformerConfig
});
}
(0, _jestUtil().createDirectory)(path().dirname(cacheFilePath));
return this._buildTransformResult(
filename,
cacheFilePath,
content,
transformer,
shouldCallTransform,
options,
processed,
sourceMapPath
);
}
async transformSourceAsync(filepath, content, options) {
const filename = (0, _jestUtil().tryRealpath)(filepath);
const {transformer, transformerConfig = {}} =
this._getTransformer(filename) ?? {};
const cacheFilePath = await this._getFileCachePathAsync(
filename,
content,
options
);
const sourceMapPath = `${cacheFilePath}.map`;
// Ignore cache if `config.cache` is set (--no-cache)
const code = this._config.cache ? readCodeCacheFile(cacheFilePath) : null;
if (code != null) {
// 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,
originalCode: content,
sourceMapPath
};
}
let processed = null;
let shouldCallTransform = false;
if (transformer && this.shouldTransform(filename)) {
shouldCallTransform = true;
const process = transformer.processAsync ?? transformer.process;
// This is probably dead code since `_getTransformerAsync` already asserts this
(0, _jestUtil().invariant)(
typeof process === 'function',
'A transformer must always export either a `process` or `processAsync`'
);
processed = await process(content, filename, {
...options,
cacheFS: this._cacheFS,
config: this._config,
configString: this._cache.configString,
transformerConfig
});
}
(0, _jestUtil().createDirectory)(path().dirname(cacheFilePath));
return this._buildTransformResult(
filename,
cacheFilePath,
content,
transformer,
shouldCallTransform,
options,
processed,
sourceMapPath
);
}
async _transformAndBuildScriptAsync(
filename,
options,
transformOptions,
fileSource
) {
const {isInternalModule} = options;
let fileContent = fileSource ?? this._cacheFS.get(filename);
if (fileContent == null) {
fileContent = fs().readFileSync(filename, 'utf8');
this._cacheFS.set(filename, fileContent);
}
const content = stripShebang(fileContent);
let code = content;
let sourceMapPath = null;
const willTransform =
isInternalModule !== true &&
(transformOptions.instrument || this.shouldTransform(filename));
try {
if (willTransform) {
const transformedSource = await this.transformSourceAsync(
filename,
content,
transformOptions
);
code = transformedSource.code;
sourceMapPath = transformedSource.sourceMapPath;
}
return {
code,
originalCode: content,
sourceMapPath
};
} catch (e) {
if (!(e instanceof Error)) {
throw e;
}
throw (0, _enhanceUnexpectedTokenMessage.default)(e);
}
}
_transformAndBuildScript(filename, options, transformOptions, fileSource) {
const {isInternalModule} = options;
let fileContent = fileSource ?? this._cacheFS.get(filename);
if (fileContent == null) {
fileContent = fs().readFileSync(filename, 'utf8');
this._cacheFS.set(filename, fileContent);
}
const content = stripShebang(fileContent);
let code = content;
let sourceMapPath = null;
const willTransform =
isInternalModule !== true &&
(transformOptions.instrument || this.shouldTransform(filename));
try {
if (willTransform) {
const transformedSource = this.transformSource(
filename,
content,
transformOptions
);
code = transformedSource.code;
sourceMapPath = transformedSource.sourceMapPath;
}
return {
code,
originalCode: content,
sourceMapPath
};
} catch (e) {
if (!(e instanceof Error)) {
throw e;
}
throw (0, _enhanceUnexpectedTokenMessage.default)(e);
}
}
async transformAsync(filename, options, fileSource) {
const instrument =
options.coverageProvider === 'babel' &&
(0, _shouldInstrument.default)(filename, options, this._config);
const scriptCacheKey = getScriptCacheKey(filename, instrument);
let result = this._cache.transformedFiles.get(scriptCacheKey);
if (result) {
return result;
}
result = await this._transformAndBuildScriptAsync(
filename,
options,
{
...options,
instrument
},
fileSource
);
if (scriptCacheKey) {
this._cache.transformedFiles.set(scriptCacheKey, result);
}
return result;
}
transform(filename, options, fileSource) {
const instrument =
options.coverageProvider === 'babel' &&
(0, _shouldInstrument.default)(filename, options, this._config);
const scriptCacheKey = getScriptCacheKey(filename, instrument);
let result = this._cache.transformedFiles.get(scriptCacheKey);
if (result) {
return result;
}
result = this._transformAndBuildScript(
filename,
options,
{
...options,
instrument
},
fileSource
);
if (scriptCacheKey) {
this._cache.transformedFiles.set(scriptCacheKey, result);
}
return result;
}
transformJson(filename, options, fileSource) {
const {isInternalModule} = options;
const willTransform =
isInternalModule !== true && this.shouldTransform(filename);
if (willTransform) {
const {code: transformedJsonSource} = this.transformSource(
filename,
fileSource,
{
...options,
instrument: false
}
);
return transformedJsonSource;
}
return fileSource;
}
async requireAndTranspileModule(
moduleName,
callback,
options = {
applyInteropRequireDefault: true,
instrument: false,
supportsDynamicImport: false,
supportsExportNamespaceFrom: false,
supportsStaticESM: false,
supportsTopLevelAwait: false
}
) {
let transforming = false;
const {applyInteropRequireDefault, ...transformOptions} = options;
const revertHook = (0, _pirates().addHook)(
(code, filename) => {
try {
transforming = true;
return (
this.transformSource(filename, code, transformOptions).code || code
);
} finally {
transforming = false;
}
},
{
// Exclude `mjs` extension when addHook because pirates don't support hijack es module
exts: this._config.moduleFileExtensions
.filter(ext => ext !== 'mjs')
.map(ext => `.${ext}`),
ignoreNodeModules: false,
matcher: filename => {
if (transforming) {
// Don't transform any dependency required by the transformer itself
return false;
}
return this.shouldTransform(filename);
}
}
);
try {
const module = await (0, _jestUtil().requireOrImportModule)(
moduleName,
applyInteropRequireDefault
);
if (!callback) {
revertHook();
return module;
}
const cbResult = callback(module);
if ((0, _jestUtil().isPromise)(cbResult)) {
return await waitForPromiseWithCleanup(cbResult, revertHook).then(
() => module
);
}
return module;
} finally {
revertHook();
}
}
shouldTransform(filename) {
const ignoreRegexp = this._cache.ignorePatternsRegExp;
const isIgnored = ignoreRegexp ? ignoreRegexp.test(filename) : false;
return this._config.transform.length !== 0 && !isIgnored;
}
}
// TODO: do we need to define the generics twice?
async function createTranspilingRequire(config) {
const transformer = await createScriptTransformer(config);
return async function requireAndTranspileModule(
resolverPath,
applyInteropRequireDefault = false
) {
const transpiledModule = await transformer.requireAndTranspileModule(
resolverPath,
// eslint-disable-next-line @typescript-eslint/no-empty-function
() => {},
{
applyInteropRequireDefault,
instrument: false,
supportsDynamicImport: false,
// this might be true, depending on node version.
supportsExportNamespaceFrom: false,
supportsStaticESM: false,
supportsTopLevelAwait: false
}
);
return transpiledModule;
};
}
const removeFile = path => {
try {
fs().unlinkSync(path);
} catch {}
};
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 = (0, _crypto().createHash)('sha1')
.update(code)
.digest('hex')
.substring(0, 32);
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.substring(33);
const checksum = (0, _crypto().createHash)('sha1')
.update(code)
.digest('hex')
.substring(0, 32);
if (checksum === content.substring(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 {
(0, _writeFileAtomic().sync)(cachePath, fileData, {
encoding: 'utf8',
fsync: false
});
} catch (e) {
if (!(e instanceof Error)) {
throw 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' &&
fs().existsSync(cachePath);
const readCacheFile = cachePath => {
if (!fs().existsSync(cachePath)) {
return null;
}
let fileData;
try {
fileData = fs().readFileSync(cachePath, 'utf8');
} catch (e) {
if (!(e instanceof Error)) {
throw e;
}
// on windows write-file-atomic is not atomic which can
// result in this error
if (e.code === 'ENOENT' && process.platform === 'win32') {
return null;
}
e.message = `jest: failed to read cache file: ${cachePath}\nFailure message: ${e.message}`;
removeFile(cachePath);
throw e;
}
if (fileData == null) {
// We must have somehow created the file but failed to write to it,
// let's delete it and retry.
removeFile(cachePath);
}
return fileData;
};
const getScriptCacheKey = (filename, instrument) => {
const mtime = fs().statSync(filename).mtime;
return `${filename}_${mtime.getTime()}${instrument ? '_instrumented' : ''}`;
};
const calcIgnorePatternRegExp = config => {
if (
config.transformIgnorePatterns == null ||
config.transformIgnorePatterns.length === 0
) {
return undefined;
}
return new RegExp(config.transformIgnorePatterns.join('|'));
};
const calcTransformRegExp = config => {
if (!config.transform.length) {
return undefined;
}
const transformRegexp = [];
for (let i = 0; i < config.transform.length; i++) {
transformRegexp.push([
new RegExp(config.transform[i][0]),
config.transform[i][1],
config.transform[i][2]
]);
}
return transformRegexp;
};
function assertSyncTransformer(transformer, name) {
(0, _jestUtil().invariant)(name);
(0, _jestUtil().invariant)(
typeof transformer.process === 'function',
(0, _runtimeErrorsAndWarnings.makeInvalidSyncTransformerError)(name)
);
}
async function createScriptTransformer(config, cacheFS = new Map()) {
const transformer = new ScriptTransformer(config, cacheFS);
await transformer.loadTransformers();
return transformer;
}