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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const {
ArrayIsArray,
ArrayPrototypeConcat,
ArrayPrototypeFilter,
ArrayPrototypeIncludes,
ArrayPrototypeIndexOf,
ArrayPrototypeJoin,
ArrayPrototypePush,
ArrayPrototypeSlice,
ArrayPrototypeSplice,
ArrayPrototypeUnshift,
ArrayPrototypeUnshiftApply,
ArrayPrototypeFlatMap,
Boolean,
Error,
JSONParse,
ObjectCreate,
ObjectDefineProperty,
ObjectFreeze,
ObjectGetOwnPropertyDescriptor,
ObjectGetPrototypeOf,
ObjectKeys,
ObjectPrototype,
ObjectPrototypeHasOwnProperty,
ObjectSetPrototypeOf,
Proxy,
ReflectApply,
ReflectSet,
RegExpPrototypeExec,
SafeMap,
SafeSet,
SafeWeakMap,
String,
StringPrototypeCharAt,
StringPrototypeCharCodeAt,
StringPrototypeEndsWith,
StringPrototypeLastIndexOf,
StringPrototypeIndexOf,
StringPrototypeRepeat,
StringPrototypeSlice,
StringPrototypeSplit,
StringPrototypeStartsWith,
} = primordials;
// Map used to store CJS parsing data.
const cjsParseCache = new SafeWeakMap();
// Set first due to cycle with ESM loader functions.
module.exports = {
wrapSafe, Module, toRealPath, readPackageScope, cjsParseCache,
get hasLoadedAnyUserCJSModule() { return hasLoadedAnyUserCJSModule; }
};
const { NativeModule } = require('internal/bootstrap/loaders');
const {
maybeCacheSourceMap,
} = require('internal/source_map/source_map_cache');
const { pathToFileURL, fileURLToPath, isURLInstance } = require('internal/url');
const {
deprecate,
emitExperimentalWarning,
kEmptyObject,
filterOwnProperties,
setOwnProperty,
} = require('internal/util');
const vm = require('vm');
const assert = require('internal/assert');
const fs = require('fs');
const internalFS = require('internal/fs/utils');
const path = require('path');
const { sep } = path;
const { internalModuleStat } = internalBinding('fs');
const packageJsonReader = require('internal/modules/package_json_reader');
const { safeGetenv } = internalBinding('credentials');
const {
cjsConditions,
hasEsmSyntax,
loadNativeModule,
makeRequireFunction,
normalizeReferrerURL,
stripBOM,
} = require('internal/modules/cjs/helpers');
const { getOptionValue } = require('internal/options');
const preserveSymlinks = getOptionValue('--preserve-symlinks');
const preserveSymlinksMain = getOptionValue('--preserve-symlinks-main');
// Do not eagerly grab .manifest, it may be in TDZ
const policy = getOptionValue('--experimental-policy') ?
require('internal/process/policy') :
null;
// Whether any user-provided CJS modules had been loaded (executed).
// Used for internal assertions.
let hasLoadedAnyUserCJSModule = false;
const {
codes: {
ERR_INVALID_ARG_VALUE,
ERR_INVALID_MODULE_SPECIFIER,
ERR_REQUIRE_ESM,
ERR_UNKNOWN_BUILTIN_MODULE,
},
setArrowMessage,
} = require('internal/errors');
const { validateString } = require('internal/validators');
const pendingDeprecation = getOptionValue('--pending-deprecation');
const {
CHAR_FORWARD_SLASH,
CHAR_BACKWARD_SLASH,
CHAR_COLON
} = require('internal/constants');
const {
isProxy
} = require('internal/util/types');
const asyncESM = require('internal/process/esm_loader');
const { enrichCJSError } = require('internal/modules/esm/translators');
const { kEvaluated } = internalBinding('module_wrap');
const {
encodedSepRegEx,
packageExportsResolve,
packageImportsResolve
} = require('internal/modules/esm/resolve');
const isWindows = process.platform === 'win32';
const relativeResolveCache = ObjectCreate(null);
let requireDepth = 0;
let statCache = null;
let isPreloading = false;
function stat(filename) {
filename = path.toNamespacedPath(filename);
if (statCache !== null) {
const result = statCache.get(filename);
if (result !== undefined) return result;
}
const result = internalModuleStat(filename);
if (statCache !== null && result >= 0) {
// Only set cache when `internalModuleStat(filename)` succeeds.
statCache.set(filename, result);
}
return result;
}
let _stat = stat;
ObjectDefineProperty(Module, '_stat', {
__proto__: null,
get() { return _stat; },
set(stat) {
emitExperimentalWarning('Module._stat');
_stat = stat;
return true;
},
configurable: true,
});
function updateChildren(parent, child, scan) {
const children = parent?.children;
if (children && !(scan && ArrayPrototypeIncludes(children, child)))
ArrayPrototypePush(children, child);
}
const moduleParentCache = new SafeWeakMap();
function Module(id = '', parent) {
this.id = id;
this.path = path.dirname(id);
setOwnProperty(this, 'exports', {});
moduleParentCache.set(this, parent);
updateChildren(parent, this, false);
this.filename = null;
this.loaded = false;
this.children = [];
}
const builtinModules = [];
for (const { 0: id, 1: mod } of NativeModule.map) {
if (mod.canBeRequiredByUsers &&
NativeModule.canBeRequiredWithoutScheme(id)) {
ArrayPrototypePush(builtinModules, id);
}
}
const allBuiltins = new SafeSet(
ArrayPrototypeFlatMap(builtinModules, (bm) => [bm, `node:${bm}`])
);
NativeModule.getSchemeOnlyModuleNames().forEach((builtin) => allBuiltins.add(`node:${builtin}`));
ObjectFreeze(builtinModules);
Module.builtinModules = builtinModules;
Module._cache = ObjectCreate(null);
Module._pathCache = ObjectCreate(null);
Module._extensions = ObjectCreate(null);
let modulePaths = [];
Module.globalPaths = [];
let patched = false;
// eslint-disable-next-line func-style
let wrap = function(script) {
return Module.wrapper[0] + script + Module.wrapper[1];
};
const wrapper = [
'(function (exports, require, module, __filename, __dirname) { ',
'\n});',
];
let wrapperProxy = new Proxy(wrapper, {
__proto__: null,
set(target, property, value, receiver) {
patched = true;
return ReflectSet(target, property, value, receiver);
},
defineProperty(target, property, descriptor) {
patched = true;
return ObjectDefineProperty(target, property, descriptor);
}
});
ObjectDefineProperty(Module, 'wrap', {
__proto__: null,
get() {
return wrap;
},
set(value) {
patched = true;
wrap = value;
}
});
ObjectDefineProperty(Module, 'wrapper', {
__proto__: null,
get() {
return wrapperProxy;
},
set(value) {
patched = true;
wrapperProxy = value;
}
});
const isPreloadingDesc = { get() { return isPreloading; } };
ObjectDefineProperty(Module.prototype, 'isPreloading', isPreloadingDesc);
ObjectDefineProperty(NativeModule.prototype, 'isPreloading', isPreloadingDesc);
function getModuleParent() {
return moduleParentCache.get(this);
}
function setModuleParent(value) {
moduleParentCache.set(this, value);
}
ObjectDefineProperty(Module.prototype, 'parent', {
__proto__: null,
get: pendingDeprecation ? deprecate(
getModuleParent,
'module.parent is deprecated due to accuracy issues. Please use ' +
'require.main to find program entry point instead.',
'DEP0144'
) : getModuleParent,
set: pendingDeprecation ? deprecate(
setModuleParent,
'module.parent is deprecated due to accuracy issues. Please use ' +
'require.main to find program entry point instead.',
'DEP0144'
) : setModuleParent,
});
let debug = require('internal/util/debuglog').debuglog('module', (fn) => {
debug = fn;
});
Module._debug = deprecate(debug, 'Module._debug is deprecated.', 'DEP0077');
// Given a module name, and a list of paths to test, returns the first
// matching file in the following precedence.
//
// require("a.<ext>")
// -> a.<ext>
//
// require("a")
// -> a
// -> a.<ext>
// -> a/index.<ext>
const packageJsonCache = new SafeMap();
function readPackage(requestPath) {
const jsonPath = path.resolve(requestPath, 'package.json');
const existing = packageJsonCache.get(jsonPath);
if (existing !== undefined) return existing;
const result = packageJsonReader.read(jsonPath);
const json = result.containsKeys === false ? '{}' : result.string;
if (json === undefined) {
packageJsonCache.set(jsonPath, false);
return false;
}
try {
const filtered = filterOwnProperties(JSONParse(json), [
'name',
'main',
'exports',
'imports',
'type',
]);
packageJsonCache.set(jsonPath, filtered);
return filtered;
} catch (e) {
e.path = jsonPath;
e.message = 'Error parsing ' + jsonPath + ': ' + e.message;
throw e;
}
}
let _readPackage = readPackage;
ObjectDefineProperty(Module, '_readPackage', {
__proto__: null,
get() { return _readPackage; },
set(readPackage) {
emitExperimentalWarning('Module._readPackage');
_readPackage = readPackage;
return true;
},
configurable: true,
});
function readPackageScope(checkPath) {
const rootSeparatorIndex = StringPrototypeIndexOf(checkPath, sep);
let separatorIndex;
do {
separatorIndex = StringPrototypeLastIndexOf(checkPath, sep);
checkPath = StringPrototypeSlice(checkPath, 0, separatorIndex);
if (StringPrototypeEndsWith(checkPath, sep + 'node_modules'))
return false;
const pjson = _readPackage(checkPath + sep);
if (pjson) return {
data: pjson,
path: checkPath,
};
} while (separatorIndex > rootSeparatorIndex);
return false;
}
function tryPackage(requestPath, exts, isMain, originalPath) {
const pkg = _readPackage(requestPath)?.main;
if (!pkg) {
return tryExtensions(path.resolve(requestPath, 'index'), exts, isMain);
}
const filename = path.resolve(requestPath, pkg);
let actual = tryFile(filename, isMain) ||
tryExtensions(filename, exts, isMain) ||
tryExtensions(path.resolve(filename, 'index'), exts, isMain);
if (actual === false) {
actual = tryExtensions(path.resolve(requestPath, 'index'), exts, isMain);
if (!actual) {
// eslint-disable-next-line no-restricted-syntax
const err = new Error(
`Cannot find module '${filename}'. ` +
'Please verify that the package.json has a valid "main" entry'
);
err.code = 'MODULE_NOT_FOUND';
err.path = path.resolve(requestPath, 'package.json');
err.requestPath = originalPath;
// TODO(BridgeAR): Add the requireStack as well.
throw err;
} else {
const jsonPath = path.resolve(requestPath, 'package.json');
process.emitWarning(
`Invalid 'main' field in '${jsonPath}' of '${pkg}'. ` +
'Please either fix that or report it to the module author',
'DeprecationWarning',
'DEP0128'
);
}
}
return actual;
}
// In order to minimize unnecessary lstat() calls,
// this cache is a list of known-real paths.
// Set to an empty Map to reset.
const realpathCache = new SafeMap();
// Check if the file exists and is not a directory
// if using --preserve-symlinks and isMain is false,
// keep symlinks intact, otherwise resolve to the
// absolute realpath.
function tryFile(requestPath, isMain) {
const rc = _stat(requestPath);
if (rc !== 0) return;
if (preserveSymlinks && !isMain) {
return path.resolve(requestPath);
}
return toRealPath(requestPath);
}
function toRealPath(requestPath) {
return fs.realpathSync(requestPath, {
[internalFS.realpathCacheKey]: realpathCache
});
}
// Given a path, check if the file exists with any of the set extensions
function tryExtensions(p, exts, isMain) {
for (let i = 0; i < exts.length; i++) {
const filename = tryFile(p + exts[i], isMain);
if (filename) {
return filename;
}
}
return false;
}
// Find the longest (possibly multi-dot) extension registered in
// Module._extensions
function findLongestRegisteredExtension(filename) {
const name = path.basename(filename);
let currentExtension;
let index;
let startIndex = 0;
while ((index = StringPrototypeIndexOf(name, '.', startIndex)) !== -1) {
startIndex = index + 1;
if (index === 0) continue; // Skip dotfiles like .gitignore
currentExtension = StringPrototypeSlice(name, index);
if (Module._extensions[currentExtension]) return currentExtension;
}
return '.js';
}
function trySelfParentPath(parent) {
if (!parent) return false;
if (parent.filename) {
return parent.filename;
} else if (parent.id === '<repl>' || parent.id === 'internal/preload') {
try {
return process.cwd() + path.sep;
} catch {
return false;
}
}
}
function trySelf(parentPath, request) {
if (!parentPath) return false;
const { data: pkg, path: pkgPath } = readPackageScope(parentPath) || {};
if (!pkg || pkg.exports === undefined) return false;
if (typeof pkg.name !== 'string') return false;
let expansion;
if (request === pkg.name) {
expansion = '.';
} else if (StringPrototypeStartsWith(request, `${pkg.name}/`)) {
expansion = '.' + StringPrototypeSlice(request, pkg.name.length);
} else {
return false;
}
try {
return finalizeEsmResolution(packageExportsResolve(
pathToFileURL(pkgPath + '/package.json'), expansion, pkg,
pathToFileURL(parentPath), cjsConditions), request, parentPath, pkgPath);
} catch (e) {
if (e.code === 'ERR_MODULE_NOT_FOUND')
throw createEsmNotFoundErr(request, pkgPath + '/package.json');
throw e;
}
}
// This only applies to requests of a specific form:
// 1. name/.*
// 2. @scope/name/.*
const EXPORTS_PATTERN = /^((?:@[^/\\%]+\/)?[^./\\%][^/\\%]*)(\/.*)?$/;
function resolveExports(nmPath, request) {
// The implementation's behavior is meant to mirror resolution in ESM.
const { 1: name, 2: expansion = '' } =
RegExpPrototypeExec(EXPORTS_PATTERN, request) || kEmptyObject;
if (!name)
return;
const pkgPath = path.resolve(nmPath, name);
const pkg = _readPackage(pkgPath);
if (pkg?.exports != null) {
try {
return finalizeEsmResolution(packageExportsResolve(
pathToFileURL(pkgPath + '/package.json'), '.' + expansion, pkg, null,
cjsConditions), request, null, pkgPath);
} catch (e) {
if (e.code === 'ERR_MODULE_NOT_FOUND')
throw createEsmNotFoundErr(request, pkgPath + '/package.json');
throw e;
}
}
}
const trailingSlashRegex = /(?:^|\/)\.?\.$/;
Module._findPath = function(request, paths, isMain) {
const absoluteRequest = path.isAbsolute(request);
if (absoluteRequest) {
paths = [''];
} else if (!paths || paths.length === 0) {
return false;
}
const cacheKey = request + '\x00' + ArrayPrototypeJoin(paths, '\x00');
const entry = Module._pathCache[cacheKey];
if (entry)
return entry;
let exts;
let trailingSlash = request.length > 0 &&
StringPrototypeCharCodeAt(request, request.length - 1) ===
CHAR_FORWARD_SLASH;
if (!trailingSlash) {
trailingSlash = RegExpPrototypeExec(trailingSlashRegex, request) !== null;
}
// For each path
for (let i = 0; i < paths.length; i++) {
// Don't search further if path doesn't exist
const curPath = paths[i];
if (curPath && _stat(curPath) < 1) continue;
if (!absoluteRequest) {
const exportsResolved = resolveExports(curPath, request);
if (exportsResolved)
return exportsResolved;
}
const basePath = path.resolve(curPath, request);
let filename;
const rc = _stat(basePath);
if (!trailingSlash) {
if (rc === 0) { // File.
if (!isMain) {
if (preserveSymlinks) {
filename = path.resolve(basePath);
} else {
filename = toRealPath(basePath);
}
} else if (preserveSymlinksMain) {
// For the main module, we use the preserveSymlinksMain flag instead
// mainly for backward compatibility, as the preserveSymlinks flag
// historically has not applied to the main module. Most likely this
// was intended to keep .bin/ binaries working, as following those
// symlinks is usually required for the imports in the corresponding
// files to resolve; that said, in some use cases following symlinks
// causes bigger problems which is why the preserveSymlinksMain option
// is needed.
filename = path.resolve(basePath);
} else {
filename = toRealPath(basePath);
}
}
if (!filename) {
// Try it with each of the extensions
if (exts === undefined)
exts = ObjectKeys(Module._extensions);
filename = tryExtensions(basePath, exts, isMain);
}
}
if (!filename && rc === 1) { // Directory.
// try it with each of the extensions at "index"
if (exts === undefined)
exts = ObjectKeys(Module._extensions);
filename = tryPackage(basePath, exts, isMain, request);
}
if (filename) {
Module._pathCache[cacheKey] = filename;
return filename;
}
}
return false;
};
// 'node_modules' character codes reversed
const nmChars = [ 115, 101, 108, 117, 100, 111, 109, 95, 101, 100, 111, 110 ];
const nmLen = nmChars.length;
if (isWindows) {
// 'from' is the __dirname of the module.
Module._nodeModulePaths = function(from) {
// Guarantee that 'from' is absolute.
from = path.resolve(from);
// note: this approach *only* works when the path is guaranteed
// to be absolute. Doing a fully-edge-case-correct path.split
// that works on both Windows and Posix is non-trivial.
// return root node_modules when path is 'D:\\'.
// path.resolve will make sure from.length >=3 in Windows.
if (StringPrototypeCharCodeAt(from, from.length - 1) ===
CHAR_BACKWARD_SLASH &&
StringPrototypeCharCodeAt(from, from.length - 2) === CHAR_COLON)
return [from + 'node_modules'];
const paths = [];
for (let i = from.length - 1, p = 0, last = from.length; i >= 0; --i) {
const code = StringPrototypeCharCodeAt(from, i);
// The path segment separator check ('\' and '/') was used to get
// node_modules path for every path segment.
// Use colon as an extra condition since we can get node_modules
// path for drive root like 'C:\node_modules' and don't need to
// parse drive name.
if (code === CHAR_BACKWARD_SLASH ||
code === CHAR_FORWARD_SLASH ||
code === CHAR_COLON) {
if (p !== nmLen)
ArrayPrototypePush(
paths,
StringPrototypeSlice(from, 0, last) + '\\node_modules'
);
last = i;
p = 0;
} else if (p !== -1) {
if (nmChars[p] === code) {
++p;
} else {
p = -1;
}
}
}
return paths;
};
} else { // posix
// 'from' is the __dirname of the module.
Module._nodeModulePaths = function(from) {
// Guarantee that 'from' is absolute.
from = path.resolve(from);
// Return early not only to avoid unnecessary work, but to *avoid* returning
// an array of two items for a root: [ '//node_modules', '/node_modules' ]
if (from === '/')
return ['/node_modules'];
// note: this approach *only* works when the path is guaranteed
// to be absolute. Doing a fully-edge-case-correct path.split
// that works on both Windows and Posix is non-trivial.
const paths = [];
for (let i = from.length - 1, p = 0, last = from.length; i >= 0; --i) {
const code = StringPrototypeCharCodeAt(from, i);
if (code === CHAR_FORWARD_SLASH) {
if (p !== nmLen)
ArrayPrototypePush(
paths,
StringPrototypeSlice(from, 0, last) + '/node_modules'
);
last = i;
p = 0;
} else if (p !== -1) {
if (nmChars[p] === code) {
++p;
} else {
p = -1;
}
}
}
// Append /node_modules to handle root paths.
ArrayPrototypePush(paths, '/node_modules');
return paths;
};
}
Module._resolveLookupPaths = function(request, parent) {
if (NativeModule.canBeRequiredByUsers(request) &&
NativeModule.canBeRequiredWithoutScheme(request)) {
debug('looking for %j in []', request);
return null;
}
// Check for node modules paths.
if (StringPrototypeCharAt(request, 0) !== '.' ||
(request.length > 1 &&
StringPrototypeCharAt(request, 1) !== '.' &&
StringPrototypeCharAt(request, 1) !== '/' &&
(!isWindows || StringPrototypeCharAt(request, 1) !== '\\'))) {
let paths = modulePaths;
if (parent?.paths?.length) {
paths = ArrayPrototypeConcat(parent.paths, paths);
}
debug('looking for %j in %j', request, paths);
return paths.length > 0 ? paths : null;
}
// In REPL, parent.filename is null.
if (!parent || !parent.id || !parent.filename) {
// Make require('./path/to/foo') work - normally the path is taken
// from realpath(__filename) but in REPL there is no filename
const mainPaths = ['.'];
debug('looking for %j in %j', request, mainPaths);
return mainPaths;
}
debug('RELATIVE: requested: %s from parent.id %s', request, parent.id);
const parentDir = [path.dirname(parent.filename)];
debug('looking for %j', parentDir);
return parentDir;
};
function emitCircularRequireWarning(prop) {
process.emitWarning(
`Accessing non-existent property '${String(prop)}' of module exports ` +
'inside circular dependency'
);
}
// A Proxy that can be used as the prototype of a module.exports object and
// warns when non-existent properties are accessed.
const CircularRequirePrototypeWarningProxy = new Proxy({}, {
__proto__: null,
get(target, prop) {
// Allow __esModule access in any case because it is used in the output
// of transpiled code to determine whether something comes from an
// ES module, and is not used as a regular key of `module.exports`.
if (prop in target || prop === '__esModule') return target[prop];
emitCircularRequireWarning(prop);
return undefined;
},
getOwnPropertyDescriptor(target, prop) {
if (ObjectPrototypeHasOwnProperty(target, prop) || prop === '__esModule')
return ObjectGetOwnPropertyDescriptor(target, prop);
emitCircularRequireWarning(prop);
return undefined;
}
});
function getExportsForCircularRequire(module) {
if (module.exports &&
!isProxy(module.exports) &&
ObjectGetPrototypeOf(module.exports) === ObjectPrototype &&
// Exclude transpiled ES6 modules / TypeScript code because those may
// employ unusual patterns for accessing 'module.exports'. That should
// be okay because ES6 modules have a different approach to circular
// dependencies anyway.
!module.exports.__esModule) {
// This is later unset once the module is done loading.
ObjectSetPrototypeOf(
module.exports, CircularRequirePrototypeWarningProxy);
}
return module.exports;
}
// Check the cache for the requested file.
// 1. If a module already exists in the cache: return its exports object.
// 2. If the module is native: call
// `NativeModule.prototype.compileForPublicLoader()` and return the exports.
// 3. Otherwise, create a new module for the file and save it to the cache.
// Then have it load the file contents before returning its exports
// object.
Module._load = function(request, parent, isMain) {
let relResolveCacheIdentifier;
if (parent) {
debug('Module._load REQUEST %s parent: %s', request, parent.id);
// Fast path for (lazy loaded) modules in the same directory. The indirect
// caching is required to allow cache invalidation without changing the old
// cache key names.
relResolveCacheIdentifier = `${parent.path}\x00${request}`;
const filename = relativeResolveCache[relResolveCacheIdentifier];
if (filename !== undefined) {
const cachedModule = Module._cache[filename];
if (cachedModule !== undefined) {
updateChildren(parent, cachedModule, true);
if (!cachedModule.loaded)
return getExportsForCircularRequire(cachedModule);
return cachedModule.exports;
}
delete relativeResolveCache[relResolveCacheIdentifier];
}
}
if (StringPrototypeStartsWith(request, 'node:')) {
// Slice 'node:' prefix
const id = StringPrototypeSlice(request, 5);
const module = loadNativeModule(id, request);
if (!module?.canBeRequiredByUsers) {
throw new ERR_UNKNOWN_BUILTIN_MODULE(request);
}
return module.exports;
}
const filename = Module._resolveFilename(request, parent, isMain);
const cachedModule = Module._cache[filename];
if (cachedModule !== undefined) {
updateChildren(parent, cachedModule, true);
if (!cachedModule.loaded) {
const parseCachedModule = cjsParseCache.get(cachedModule);
if (!parseCachedModule || parseCachedModule.loaded)
return getExportsForCircularRequire(cachedModule);
parseCachedModule.loaded = true;
} else {
return cachedModule.exports;
}
}
const mod = loadNativeModule(filename, request);
if (mod?.canBeRequiredByUsers &&
NativeModule.canBeRequiredWithoutScheme(filename)) {
return mod.exports;
}
// Don't call updateChildren(), Module constructor already does.
const module = cachedModule || new Module(filename, parent);
if (isMain) {
process.mainModule = module;
module.id = '.';
}
Module._cache[filename] = module;
if (parent !== undefined) {
relativeResolveCache[relResolveCacheIdentifier] = filename;
}
let threw = true;
try {
module.load(filename);
threw = false;
} finally {
if (threw) {
delete Module._cache[filename];
if (parent !== undefined) {
delete relativeResolveCache[relResolveCacheIdentifier];
const children = parent?.children;
if (ArrayIsArray(children)) {
const index = ArrayPrototypeIndexOf(children, module);
if (index !== -1) {
ArrayPrototypeSplice(children, index, 1);
}
}
}
} else if (module.exports &&
!isProxy(module.exports) &&
ObjectGetPrototypeOf(module.exports) ===
CircularRequirePrototypeWarningProxy) {
ObjectSetPrototypeOf(module.exports, ObjectPrototype);
}
}
return module.exports;
};
Module._resolveFilename = function(request, parent, isMain, options) {
if (
(
StringPrototypeStartsWith(request, 'node:') &&
NativeModule.canBeRequiredByUsers(StringPrototypeSlice(request, 5))
) || (
NativeModule.canBeRequiredByUsers(request) &&
NativeModule.canBeRequiredWithoutScheme(request)
)
) {
return request;
}
let paths;
if (typeof options === 'object' && options !== null) {
if (ArrayIsArray(options.paths)) {
const isRelative = StringPrototypeStartsWith(request, './') ||
StringPrototypeStartsWith(request, '../') ||
((isWindows && StringPrototypeStartsWith(request, '.\\')) ||
StringPrototypeStartsWith(request, '..\\'));
if (isRelative) {
paths = options.paths;
} else {
const fakeParent = new Module('', null);
paths = [];
for (let i = 0; i < options.paths.length; i++) {
const path = options.paths[i];
fakeParent.paths = Module._nodeModulePaths(path);
const lookupPaths = Module._resolveLookupPaths(request, fakeParent);
for (let j = 0; j < lookupPaths.length; j++) {
if (!ArrayPrototypeIncludes(paths, lookupPaths[j]))
ArrayPrototypePush(paths, lookupPaths[j]);
}
}
}
} else if (options.paths === undefined) {
paths = Module._resolveLookupPaths(request, parent);
} else {
throw new ERR_INVALID_ARG_VALUE('options.paths', options.paths);
}
} else {
paths = Module._resolveLookupPaths(request, parent);
}
if (request[0] === '#' && (parent?.filename || parent?.id === '<repl>')) {
const parentPath = parent?.filename ?? process.cwd() + path.sep;
const pkg = readPackageScope(parentPath) || {};
if (pkg.data?.imports != null) {
try {
return finalizeEsmResolution(
packageImportsResolve(request, pathToFileURL(parentPath),
cjsConditions), parentPath, request,
pkg.path);
} catch (e) {
if (e.code === 'ERR_MODULE_NOT_FOUND')
throw createEsmNotFoundErr(request);
throw e;
}
}
}
// Try module self resolution first
const parentPath = trySelfParentPath(parent);
const selfResolved = trySelf(parentPath, request);
if (selfResolved) {
const cacheKey = request + '\x00' +
(paths.length === 1 ? paths[0] : ArrayPrototypeJoin(paths, '\x00'));
Module._pathCache[cacheKey] = selfResolved;
return selfResolved;
}
// Look up the filename first, since that's the cache key.
const filename = Module._findPath(request, paths, isMain, false);
if (filename) return filename;
const requireStack = [];
for (let cursor = parent;
cursor;
cursor = moduleParentCache.get(cursor)) {
ArrayPrototypePush(requireStack, cursor.filename || cursor.id);
}
let message = `Cannot find module '${request}'`;
if (requireStack.length > 0) {
message = message + '\nRequire stack:\n- ' +
ArrayPrototypeJoin(requireStack, '\n- ');
}
// eslint-disable-next-line no-restricted-syntax
const err = new Error(message);
err.code = 'MODULE_NOT_FOUND';
err.requireStack = requireStack;
throw err;
};
function finalizeEsmResolution(match, request, parentPath, pkgPath) {
const { resolved, exact } = match;
if (RegExpPrototypeExec(encodedSepRegEx, resolved) !== null)
throw new ERR_INVALID_MODULE_SPECIFIER(
resolved, 'must not include encoded "/" or "\\" characters', parentPath);
const filename = fileURLToPath(resolved);
let actual = tryFile(filename);
if (!exact && !actual) {
const exts = ObjectKeys(Module._extensions);
actual = tryExtensions(filename, exts, false) ||
tryPackage(filename, exts, false, request);
}
if (actual)
return actual;
const err = createEsmNotFoundErr(filename,
path.resolve(pkgPath, 'package.json'));
throw err;
}
function createEsmNotFoundErr(request, path) {
// eslint-disable-next-line no-restricted-syntax
const err = new Error(`Cannot find module '${request}'`);
err.code = 'MODULE_NOT_FOUND';
if (path)
err.path = path;
// TODO(BridgeAR): Add the requireStack as well.
return err;
}
// Given a file name, pass it to the proper extension handler.
Module.prototype.load = function(filename) {
debug('load %j for module %j', filename, this.id);
assert(!this.loaded);
this.filename = filename;
this.paths = Module._nodeModulePaths(path.dirname(filename));
const extension = findLongestRegisteredExtension(filename);
// allow .mjs to be overridden
if (StringPrototypeEndsWith(filename, '.mjs') && !Module._extensions['.mjs'])
throw new ERR_REQUIRE_ESM(filename, true);
Module._extensions[extension](this, filename);
this.loaded = true;
const esmLoader = asyncESM.esmLoader;
// Create module entry at load time to snapshot exports correctly
const exports = this.exports;
// Preemptively cache
if ((module?.module === undefined ||
module.module.getStatus() < kEvaluated) &&
!esmLoader.cjsCache.has(this))
esmLoader.cjsCache.set(this, exports);
};
// Loads a module at the given file path. Returns that module's
// `exports` property.
Module.prototype.require = function(id) {
validateString(id, 'id');
if (id === '') {
throw new ERR_INVALID_ARG_VALUE('id', id,
'must be a non-empty string');
}
requireDepth++;
try {
return Module._load(id, this, /* isMain */ false);
} finally {
requireDepth--;
}
};
// Resolved path to process.argv[1] will be lazily placed here
// (needed for setting breakpoint when called with --inspect-brk)
let resolvedArgv;
let hasPausedEntry = false;
function wrapSafe(filename, content, cjsModuleInstance) {
if (patched) {
const wrapper = Module.wrap(content);
return vm.runInThisContext(wrapper, {
filename,
lineOffset: 0,
displayErrors: true,
importModuleDynamically: async (specifier, _, importAssertions) => {
const loader = asyncESM.esmLoader;
return loader.import(specifier, normalizeReferrerURL(filename),
importAssertions);
},
});
}
try {
return vm.compileFunction(content, [
'exports',
'require',
'module',
'__filename',
'__dirname',
], {
filename,
importModuleDynamically(specifier, _, importAssertions) {
const loader = asyncESM.esmLoader;
return loader.import(specifier, normalizeReferrerURL(filename),
importAssertions);
},
});
} catch (err) {
if (process.mainModule === cjsModuleInstance)
enrichCJSError(err, content);
throw err;
}
}
// Run the file contents in the correct scope or sandbox. Expose
// the correct helper variables (require, module, exports) to
// the file.
// Returns exception, if any.
Module.prototype._compile = function(content, filename) {
let moduleURL;
let redirects;
if (policy?.manifest) {
moduleURL = pathToFileURL(filename);
redirects = policy.manifest.getDependencyMapper(moduleURL);
policy.manifest.assertIntegrity(moduleURL, content);
}
maybeCacheSourceMap(filename, content, this);
const compiledWrapper = wrapSafe(filename, content, this);
let inspectorWrapper = null;
if (getOptionValue('--inspect-brk') && process._eval == null) {
if (!resolvedArgv) {
// We enter the repl if we're not given a filename argument.
if (process.argv[1]) {
try {
resolvedArgv = Module._resolveFilename(process.argv[1], null, false);
} catch {
// We only expect this codepath to be reached in the case of a
// preloaded module (it will fail earlier with the main entry)
assert(ArrayIsArray(getOptionValue('--require')));
}
} else {
resolvedArgv = 'repl';
}
}
// Set breakpoint on module start
if (resolvedArgv && !hasPausedEntry && filename === resolvedArgv) {
hasPausedEntry = true;
inspectorWrapper = internalBinding('inspector').callAndPauseOnStart;
}
}
const dirname = path.dirname(filename);
const require = makeRequireFunction(this, redirects);
let result;
const exports = this.exports;
const thisValue = exports;
const module = this;
if (requireDepth === 0) statCache = new SafeMap();
if (inspectorWrapper) {
result = inspectorWrapper(compiledWrapper, thisValue, exports,
require, module, filename, dirname);
} else {
result = ReflectApply(compiledWrapper, thisValue,
[exports, require, module, filename, dirname]);
}
hasLoadedAnyUserCJSModule = true;
if (requireDepth === 0) statCache = null;
return result;
};
// Native extension for .js
Module._extensions['.js'] = function(module, filename) {
// If already analyzed the source, then it will be cached.
const cached = cjsParseCache.get(module);
let content;
if (cached?.source) {
content = cached.source;
cached.source = undefined;
} else {
content = fs.readFileSync(filename, 'utf8');
}
if (StringPrototypeEndsWith(filename, '.js')) {
const pkg = readPackageScope(filename);
// Function require shouldn't be used in ES modules.
if (pkg?.data?.type === 'module') {
const parent = moduleParentCache.get(module);
const parentPath = parent?.filename;
const packageJsonPath = path.resolve(pkg.path, 'package.json');
const usesEsm = hasEsmSyntax(content);
const err = new ERR_REQUIRE_ESM(filename, usesEsm, parentPath,
packageJsonPath);
// Attempt to reconstruct the parent require frame.
if (Module._cache[parentPath]) {
let parentSource;
try {
parentSource = fs.readFileSync(parentPath, 'utf8');
} catch {
// Continue regardless of error.
}
if (parentSource) {
const errLine = StringPrototypeSplit(
StringPrototypeSlice(err.stack, StringPrototypeIndexOf(
err.stack, ' at ')), '\n', 1)[0];
const { 1: line, 2: col } =
RegExpPrototypeExec(/(\d+):(\d+)\)/, errLine) || [];
if (line && col) {
const srcLine = StringPrototypeSplit(parentSource, '\n')[line - 1];
const frame = `${parentPath}:${line}\n${srcLine}\n${
StringPrototypeRepeat(' ', col - 1)}^\n`;
setArrowMessage(err, frame);
}
}
}
throw err;
}
}
module._compile(content, filename);
};
// Native extension for .json
Module._extensions['.json'] = function(module, filename) {
const content = fs.readFileSync(filename, 'utf8');
if (policy?.manifest) {
const moduleURL = pathToFileURL(filename);
policy.manifest.assertIntegrity(moduleURL, content);
}
try {
setOwnProperty(module, 'exports', JSONParse(stripBOM(content)));
} catch (err) {
err.message = filename + ': ' + err.message;
throw err;
}
};
// Native extension for .node
Module._extensions['.node'] = function(module, filename) {
if (policy?.manifest) {
const content = fs.readFileSync(filename);
const moduleURL = pathToFileURL(filename);
policy.manifest.assertIntegrity(moduleURL, content);
}
// Be aware this doesn't use `content`
return process.dlopen(module, path.toNamespacedPath(filename));
};
function createRequireFromPath(filename) {
// Allow a directory to be passed as the filename
const trailingSlash =
StringPrototypeEndsWith(filename, '/') ||
(isWindows && StringPrototypeEndsWith(filename, '\\'));
const proxyPath = trailingSlash ?
path.join(filename, 'noop.js') :
filename;
const m = new Module(proxyPath);
m.filename = proxyPath;
m.paths = Module._nodeModulePaths(m.path);
return makeRequireFunction(m, null);
}
const createRequireError = 'must be a file URL object, file URL string, or ' +
'absolute path string';
function createRequire(filename) {
let filepath;
if (isURLInstance(filename) ||
(typeof filename === 'string' && !path.isAbsolute(filename))) {
try {
filepath = fileURLToPath(filename);
} catch {
throw new ERR_INVALID_ARG_VALUE('filename', filename,
createRequireError);
}
} else if (typeof filename !== 'string') {
throw new ERR_INVALID_ARG_VALUE('filename', filename, createRequireError);
} else {
filepath = filename;
}
return createRequireFromPath(filepath);
}
Module.createRequire = createRequire;
Module._initPaths = function() {
const homeDir = isWindows ? process.env.USERPROFILE : safeGetenv('HOME');
const nodePath = isWindows ? process.env.NODE_PATH : safeGetenv('NODE_PATH');
// process.execPath is $PREFIX/bin/node except on Windows where it is
// $PREFIX\node.exe where $PREFIX is the root of the Node.js installation.
const prefixDir = isWindows ?
path.resolve(process.execPath, '..') :
path.resolve(process.execPath, '..', '..');
const paths = [path.resolve(prefixDir, 'lib', 'node')];
if (homeDir) {
ArrayPrototypeUnshift(paths, path.resolve(homeDir, '.node_libraries'));
ArrayPrototypeUnshift(paths, path.resolve(homeDir, '.node_modules'));
}
if (nodePath) {
ArrayPrototypeUnshiftApply(paths, ArrayPrototypeFilter(
StringPrototypeSplit(nodePath, path.delimiter),
Boolean
));
}
modulePaths = paths;
// Clone as a shallow copy, for introspection.
Module.globalPaths = ArrayPrototypeSlice(modulePaths);
};
Module._preloadModules = function(requests) {
if (!ArrayIsArray(requests))
return;
isPreloading = true;
// Preloaded modules have a dummy parent module which is deemed to exist
// in the current working directory. This seeds the search path for
// preloaded modules.
const parent = new Module('internal/preload', null);
try {
parent.paths = Module._nodeModulePaths(process.cwd());
} catch (e) {
if (e.code !== 'ENOENT') {
isPreloading = false;
throw e;
}
}
for (let n = 0; n < requests.length; n++)
parent.require(requests[n]);
isPreloading = false;
};
Module.syncBuiltinESMExports = function syncBuiltinESMExports() {
for (const mod of NativeModule.map.values()) {
if (mod.canBeRequiredByUsers &&
NativeModule.canBeRequiredWithoutScheme(mod.id)) {
mod.syncExports();
}
}
};
Module.isBuiltin = function isBuiltin(moduleName) {
return allBuiltins.has(moduleName);
};
// Backwards compatibility
Module.Module = Module;
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