Current File : /home/vacivi36/vittasync.vacivitta.com.br/vittasync/node/lib/internal/modules/cjs/loader.js
// 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,
ArrayPrototypeFilter,
ArrayPrototypeIncludes,
ArrayPrototypeIndexOf,
ArrayPrototypeJoin,
ArrayPrototypeMap,
ArrayPrototypePush,
ArrayPrototypePushApply,
ArrayPrototypeSlice,
ArrayPrototypeSplice,
ArrayPrototypeUnshift,
ArrayPrototypeUnshiftApply,
Boolean,
Error,
JSONParse,
ObjectDefineProperty,
ObjectFreeze,
ObjectGetOwnPropertyDescriptor,
ObjectGetPrototypeOf,
ObjectKeys,
ObjectPrototype,
ObjectPrototypeHasOwnProperty,
ObjectSetPrototypeOf,
Proxy,
ReflectApply,
ReflectSet,
RegExpPrototypeExec,
SafeMap,
SafeWeakMap,
String,
StringPrototypeCharAt,
StringPrototypeCharCodeAt,
StringPrototypeEndsWith,
StringPrototypeIndexOf,
StringPrototypeRepeat,
StringPrototypeSlice,
StringPrototypeSplit,
StringPrototypeStartsWith,
} = primordials;
// Map used to store CJS parsing data.
const cjsParseCache = new SafeWeakMap();
/**
* Map of already-loaded CJS modules to use.
*/
const cjsExportsCache = new SafeWeakMap();
// Set first due to cycle with ESM loader functions.
module.exports = {
cjsExportsCache,
cjsParseCache,
initializeCJS,
Module,
wrapSafe,
};
const { BuiltinModule } = require('internal/bootstrap/realm');
const {
maybeCacheSourceMap,
} = require('internal/source_map/source_map_cache');
const { pathToFileURL, fileURLToPath, isURL } = require('internal/url');
const {
pendingDeprecate,
emitExperimentalWarning,
kEmptyObject,
setOwnProperty,
getLazy,
} = require('internal/util');
const {
internalCompileFunction,
makeContextifyScript,
runScriptInThisContext,
} = require('internal/vm');
const { containsModuleSyntax } = internalBinding('contextify');
const assert = require('internal/assert');
const fs = require('fs');
const path = require('path');
const { internalModuleStat } = internalBinding('fs');
const { safeGetenv } = internalBinding('credentials');
const {
privateSymbols: {
require_private_symbol,
},
} = internalBinding('util');
const {
getCjsConditions,
initializeCjsConditions,
loadBuiltinModule,
makeRequireFunction,
setHasStartedUserCJSExecution,
stripBOM,
toRealPath,
} = require('internal/modules/helpers');
const packageJsonReader = require('internal/modules/package_json_reader');
const { getOptionValue, getEmbedderOptions } = require('internal/options');
const policy = getLazy(
() => (getOptionValue('--experimental-policy') ? require('internal/process/policy') : null),
);
const shouldReportRequiredModules = getLazy(() => process.env.WATCH_REPORT_DEPENDENCIES);
const permission = require('internal/process/permission');
const {
vm_dynamic_import_default_internal,
} = internalBinding('symbols');
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 {
CHAR_BACKWARD_SLASH,
CHAR_COLON,
CHAR_DOT,
CHAR_FORWARD_SLASH,
} = require('internal/constants');
const {
isProxy,
} = require('internal/util/types');
const isWindows = process.platform === 'win32';
const relativeResolveCache = { __proto__: null };
let requireDepth = 0;
let isPreloading = false;
let statCache = null;
/**
* Our internal implementation of `require`.
* @param {Module} module Parent module of what is being required
* @param {string} id Specifier of the child module being imported
*/
function internalRequire(module, 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, module, /* isMain */ false);
} finally {
requireDepth--;
}
}
/**
* Get a path's properties, using an in-memory cache to minimize lookups.
* @param {string} filename Absolute path to the file
*/
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,
});
/**
* Update the parent's children array with the child module.
* @param {Module} parent Module requiring the children
* @param {Module} child Module being required
* @param {boolean} scan Add the child to the parent's children if not already present
*/
function updateChildren(parent, child, scan) {
const children = parent?.children;
if (children && !(scan && ArrayPrototypeIncludes(children, child))) {
ArrayPrototypePush(children, child);
}
}
/**
* Tell the watch mode that a module was required.
* @param {string} filename Absolute path of the module
*/
function reportModuleToWatchMode(filename) {
if (shouldReportRequiredModules() && process.send) {
process.send({ 'watch:require': [filename] });
}
}
/**
* Tell the watch mode that a module was not found.
* @param {string} basePath The absolute path that errored
* @param {string[]} extensions The extensions that were tried
*/
function reportModuleNotFoundToWatchMode(basePath, extensions) {
if (shouldReportRequiredModules() && process.send) {
process.send({ 'watch:require': ArrayPrototypeMap(extensions, (ext) => path.resolve(`${basePath}${ext}`)) });
}
}
/** @type {Map<Module, Module>} */
const moduleParentCache = new SafeWeakMap();
/**
* Create a new module instance.
* @param {string} id
* @param {Module} parent
*/
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 = [];
let redirects;
const manifest = policy()?.manifest;
if (manifest) {
const moduleURL = pathToFileURL(id);
redirects = manifest.getDependencyMapper(moduleURL);
// TODO(rafaelgss): remove the necessity of this branch
setOwnProperty(this, 'require', makeRequireFunction(this, redirects));
// eslint-disable-next-line no-proto
setOwnProperty(this.__proto__, 'require', makeRequireFunction(this, redirects));
}
this[require_private_symbol] = internalRequire;
}
/** @type {Record<string, Module>} */
Module._cache = { __proto__: null };
/** @type {Record<string, string>} */
Module._pathCache = { __proto__: null };
/** @type {Record<string, (module: Module, filename: string) => void>} */
Module._extensions = { __proto__: null };
/** @type {string[]} */
let modulePaths = [];
/** @type {string[]} */
Module.globalPaths = [];
let patched = false;
/**
* Add the CommonJS wrapper around a module's source code.
* @param {string} script Module source code
*/
let wrap = function(script) { // eslint-disable-line func-style
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(BuiltinModule.prototype, 'isPreloading', isPreloadingDesc);
/**
* Get the parent of the current module from our cache.
*/
function getModuleParent() {
return moduleParentCache.get(this);
}
/**
* Set the parent of the current module in our cache.
* @param {Module} value
*/
function setModuleParent(value) {
moduleParentCache.set(this, value);
}
let debug = require('internal/util/debuglog').debuglog('module', (fn) => {
debug = fn;
});
ObjectDefineProperty(Module.prototype, 'parent', {
__proto__: null,
get: pendingDeprecate(
getModuleParent,
'module.parent is deprecated due to accuracy issues. Please use ' +
'require.main to find program entry point instead.',
'DEP0144',
),
set: pendingDeprecate(
setModuleParent,
'module.parent is deprecated due to accuracy issues. Please use ' +
'require.main to find program entry point instead.',
'DEP0144',
),
});
Module._debug = pendingDeprecate(debug, 'Module._debug is deprecated.', 'DEP0077');
Module.isBuiltin = BuiltinModule.isBuiltin;
/**
* Prepare to run CommonJS code.
* This function is called during pre-execution, before any user code is run.
*/
function initializeCJS() {
// This need to be done at runtime in case --expose-internals is set.
const builtinModules = BuiltinModule.getCanBeRequiredByUsersWithoutSchemeList();
Module.builtinModules = ObjectFreeze(builtinModules);
initializeCjsConditions();
if (!getEmbedderOptions().noGlobalSearchPaths) {
Module._initPaths();
}
// TODO(joyeecheung): deprecate this in favor of a proper hook?
Module.runMain =
require('internal/modules/run_main').executeUserEntryPoint;
}
// 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>
let _readPackage = packageJsonReader.readPackage;
ObjectDefineProperty(Module, '_readPackage', {
__proto__: null,
get() { return _readPackage; },
set(readPackage) {
emitExperimentalWarning('Module._readPackage');
_readPackage = readPackage;
return true;
},
configurable: true,
});
/**
* Try to load a specifier as a package.
* @param {string} requestPath The path to what we are trying to load
* @param {string[]} exts File extensions to try appending in order to resolve the file
* @param {boolean} isMain Whether the file is the main entry point of the app
* @param {string} originalPath The specifier passed to `require`
*/
function tryPackage(requestPath, exts, isMain, originalPath) {
const { main: pkg, pjsonPath } = _readPackage(requestPath);
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 '${filename}'. ` +
'Please verify that the package.json has a valid "main" entry',
);
err.code = 'MODULE_NOT_FOUND';
err.path = pjsonPath;
err.requestPath = originalPath;
// TODO(BridgeAR): Add the requireStack as well.
throw err;
} else {
process.emitWarning(
`Invalid 'main' field in '${pjsonPath}' of '${pkg}'. ` +
'Please either fix that or report it to the module author',
'DeprecationWarning',
'DEP0128',
);
}
}
return actual;
}
/**
* Check if the file exists and is not a directory if using `--preserve-symlinks` and `isMain` is false or
* `--preserve-symlinks-main` and `isMain` is true , keep symlinks intact, otherwise resolve to the absolute realpath.
* @param {string} requestPath The path to the file to load.
* @param {boolean} isMain Whether the file is the main module.
*/
function tryFile(requestPath, isMain) {
const rc = _stat(requestPath);
if (rc !== 0) { return; }
if (getOptionValue(isMain ? '--preserve-symlinks-main' : '--preserve-symlinks')) {
return path.resolve(requestPath);
}
return toRealPath(requestPath);
}
/**
* Given a path, check if the file exists with any of the set extensions.
* @param {string} basePath The path and filename without extension
* @param {string[]} exts The extensions to try
* @param {boolean} isMain Whether the module is the main module
*/
function tryExtensions(basePath, exts, isMain) {
for (let i = 0; i < exts.length; i++) {
const filename = tryFile(basePath + exts[i], isMain);
if (filename) {
return filename;
}
}
return false;
}
/**
* Find the longest (possibly multi-dot) extension registered in `Module._extensions`.
* @param {string} filename The filename to find the longest registered extension for.
*/
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';
}
/**
* Tries to get the absolute file path of the parent module.
* @param {Module} parent The parent module object.
*/
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;
}
}
}
/**
* Attempt to resolve a module request using the parent module package metadata.
* @param {string} parentPath The path of the parent module
* @param {string} request The module request to resolve
*/
function trySelf(parentPath, request) {
if (!parentPath) { return false; }
const pkg = packageJsonReader.getNearestParentPackageJSON(parentPath);
if (pkg?.data.exports === undefined || pkg.data.name === undefined) {
return false;
}
let expansion;
if (request === pkg.data.name) {
expansion = '.';
} else if (StringPrototypeStartsWith(request, `${pkg.data.name}/`)) {
expansion = '.' + StringPrototypeSlice(request, pkg.data.name.length);
} else {
return false;
}
try {
const { packageExportsResolve } = require('internal/modules/esm/resolve');
return finalizeEsmResolution(packageExportsResolve(
pathToFileURL(pkg.path + '/package.json'), expansion, pkg.data,
pathToFileURL(parentPath), getCjsConditions()), parentPath, pkg.path);
} catch (e) {
if (e.code === 'ERR_MODULE_NOT_FOUND') {
throw createEsmNotFoundErr(request, pkg.path + '/package.json');
}
throw e;
}
}
/**
* This only applies to requests of a specific form:
* 1. `name/.*`
* 2. `@scope/name/.*`
*/
const EXPORTS_PATTERN = /^((?:@[^/\\%]+\/)?[^./\\%][^/\\%]*)(\/.*)?$/;
/**
* Resolves the exports for a given module path and request.
* @param {string} nmPath The path to the module.
* @param {string} request The request for the module.
*/
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.exists && pkg.exports != null) {
try {
const { packageExportsResolve } = require('internal/modules/esm/resolve');
return finalizeEsmResolution(packageExportsResolve(
pathToFileURL(pkgPath + '/package.json'), '.' + expansion, pkg, null,
getCjsConditions()), null, pkgPath);
} catch (e) {
if (e.code === 'ERR_MODULE_NOT_FOUND') {
throw createEsmNotFoundErr(request, pkgPath + '/package.json');
}
throw e;
}
}
}
/**
* Get the absolute path to a module.
* @param {string} request Relative or absolute file path
* @param {Array<string>} paths Folders to search as file paths
* @param {boolean} isMain Whether the request is the main app entry point
* @returns {string | false}
*/
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;
const trailingSlash = request.length > 0 &&
(StringPrototypeCharCodeAt(request, request.length - 1) === CHAR_FORWARD_SLASH || (
StringPrototypeCharCodeAt(request, request.length - 1) === CHAR_DOT &&
(
request.length === 1 ||
StringPrototypeCharCodeAt(request, request.length - 2) === CHAR_FORWARD_SLASH ||
(StringPrototypeCharCodeAt(request, request.length - 2) === CHAR_DOT && (
request.length === 2 ||
StringPrototypeCharCodeAt(request, request.length - 3) === CHAR_FORWARD_SLASH
))
)
));
const isRelative = StringPrototypeCharCodeAt(request, 0) === CHAR_DOT &&
(
request.length === 1 ||
StringPrototypeCharCodeAt(request, 1) === CHAR_FORWARD_SLASH ||
(isWindows && StringPrototypeCharCodeAt(request, 1) === CHAR_BACKWARD_SLASH) ||
(StringPrototypeCharCodeAt(request, 1) === CHAR_DOT && ((
request.length === 2 ||
StringPrototypeCharCodeAt(request, 2) === CHAR_FORWARD_SLASH) ||
(isWindows && StringPrototypeCharCodeAt(request, 2) === CHAR_BACKWARD_SLASH)))
);
let insidePath = true;
if (isRelative) {
const normalizedRequest = path.normalize(request);
if (StringPrototypeStartsWith(normalizedRequest, '..')) {
insidePath = false;
}
}
// For each path
for (let i = 0; i < paths.length; i++) {
// Don't search further if path doesn't exist
// or doesn't have permission to it
const curPath = paths[i];
if (insidePath && curPath &&
((permission.isEnabled() && !permission.has('fs.read', 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 (getOptionValue('--preserve-symlinks')) {
filename = path.resolve(basePath);
} else {
filename = toRealPath(basePath);
}
} else if (getOptionValue('--preserve-symlinks-main')) {
// For the main module, we use the --preserve-symlinks-main 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 --preserve-symlinks-main 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;
}
const extensions = [''];
if (exts !== undefined) {
ArrayPrototypePushApply(extensions, exts);
}
reportModuleNotFoundToWatchMode(basePath, extensions);
}
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) {
/**
* Get the paths to the `node_modules` folder for a given path.
* @param {string} from `__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'];
}
/** @type {string[]} */
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
/**
* Get the paths to the `node_modules` folder for a given path.
* @param {string} from `__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.
/** @type {string[]} */
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;
};
}
/**
* Get the paths for module resolution.
* @param {string} request
* @param {Module} parent
*/
Module._resolveLookupPaths = function(request, parent) {
if (BuiltinModule.normalizeRequirableId(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) !== '\\'))) {
/** @type {string[]} */
let paths;
if (parent?.paths?.length) {
paths = ArrayPrototypeSlice(modulePaths);
ArrayPrototypeUnshiftApply(paths, parent.paths);
} else {
paths = modulePaths;
}
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;
};
/**
* Emits a warning when a non-existent property of module exports is accessed inside a circular dependency.
* @param {string} prop The name of the non-existent property.
*/
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;
},
});
/**
* Returns the exports object for a module that has a circular `require`.
* If the exports object is a plain object, it is wrapped in a proxy that warns
* about circular dependencies.
* @param {Module} module The module instance
*/
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;
}
/**
* Load a module from cache if it exists, otherwise create a new module instance.
* 1. If a module already exists in the cache: return its exports object.
* 2. If the module is native: call
* `BuiltinModule.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.
* @param {string} request Specifier of module to load via `require`
* @param {string} parent Absolute path of the module importing the child
* @param {boolean} isMain Whether the module is the main entry point
*/
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];
reportModuleToWatchMode(filename);
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);
if (!BuiltinModule.canBeRequiredByUsers(id)) {
throw new ERR_UNKNOWN_BUILTIN_MODULE(request);
}
const module = loadBuiltinModule(id, 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;
}
}
if (BuiltinModule.canBeRequiredWithoutScheme(filename)) {
const mod = loadBuiltinModule(filename, request);
return mod.exports;
}
// Don't call updateChildren(), Module constructor already does.
const module = cachedModule || new Module(filename, parent);
if (isMain) {
setOwnProperty(process, 'mainModule', module);
setOwnProperty(module.require, 'main', process.mainModule);
module.id = '.';
}
reportModuleToWatchMode(filename);
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;
};
/**
* Given a `require` string and its context, get its absolute file path.
* @param {string} request The specifier to resolve
* @param {Module} parent The module containing the `require` call
* @param {boolean} isMain Whether the module is the main entry point
* @param {ResolveFilenameOptions} options Options object
* @typedef {object} ResolveFilenameOptions
* @property {string[]} paths Paths to search for modules in
*/
Module._resolveFilename = function(request, parent, isMain, options) {
if (BuiltinModule.normalizeRequirableId(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 = packageJsonReader.getNearestParentPackageJSON(parentPath) || { __proto__: null };
if (pkg.data?.imports != null) {
try {
const { packageImportsResolve } = require('internal/modules/esm/resolve');
return finalizeEsmResolution(
packageImportsResolve(request, pathToFileURL(parentPath),
getCjsConditions()), parentPath,
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);
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 '${request}'`;
if (requireStack.length > 0) {
message = message + '\nRequire stack:\n- ' +
ArrayPrototypeJoin(requireStack, '\n- ');
}
// eslint-disable-next-line no-restricted-syntax
const err = new Error(message);
err.code = 'MODULE_NOT_FOUND';
err.requireStack = requireStack;
throw err;
};
/**
* Finishes resolving an ES module specifier into an absolute file path.
* @param {string} resolved The resolved module specifier
* @param {string} parentPath The path of the parent module
* @param {string} pkgPath The path of the package.json file
* @throws {ERR_INVALID_MODULE_SPECIFIER} If the resolved module specifier contains encoded `/` or `\\` characters
* @throws {Error} If the module cannot be found
*/
function finalizeEsmResolution(resolved, parentPath, pkgPath) {
const { encodedSepRegEx } = require('internal/modules/esm/resolve');
if (RegExpPrototypeExec(encodedSepRegEx, resolved) !== null) {
throw new ERR_INVALID_MODULE_SPECIFIER(
resolved, 'must not include encoded "/" or "\\" characters', parentPath);
}
const filename = fileURLToPath(resolved);
const actual = tryFile(filename);
if (actual) {
return actual;
}
const err = createEsmNotFoundErr(filename,
path.resolve(pkgPath, 'package.json'));
throw err;
}
/**
* Creates an error object for when a requested ES module cannot be found.
* @param {string} request The name of the requested module
* @param {string} [path] The path to the requested module
*/
function createEsmNotFoundErr(request, path) {
// eslint-disable-next-line no-restricted-syntax
const err = new Error(`Cannot find module '${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.
* @param {string} filename The `require` specifier
*/
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;
// Create module entry at load time to snapshot exports correctly
const exports = this.exports;
// Preemptively cache for ESM loader.
if (!cjsExportsCache.has(this)) {
cjsExportsCache.set(this, exports);
}
};
/**
* Loads a module at the given file path. Returns that module's `exports` property.
* Note: when using the experimental policy mechanism this function is overridden.
* @param {string} id
* @throws {ERR_INVALID_ARG_TYPE} When `id` is not a string
*/
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`).
* @type {string | undefined}
*/
let resolvedArgv;
let hasPausedEntry = false;
/** @type {import('vm').Script} */
/**
* Wraps the given content in a script and runs it in a new context.
* @param {string} filename The name of the file being loaded
* @param {string} content The content of the file being loaded
* @param {Module} cjsModuleInstance The CommonJS loader instance
* @param {object} codeCache The SEA code cache
*/
function wrapSafe(filename, content, cjsModuleInstance, codeCache) {
const hostDefinedOptionId = vm_dynamic_import_default_internal;
const importModuleDynamically = vm_dynamic_import_default_internal;
if (patched) {
const wrapped = Module.wrap(content);
const script = makeContextifyScript(
wrapped, // code
filename, // filename
0, // lineOffset
0, // columnOffset
undefined, // cachedData
false, // produceCachedData
undefined, // parsingContext
hostDefinedOptionId, // hostDefinedOptionId
importModuleDynamically, // importModuleDynamically
);
// Cache the source map for the module if present.
if (script.sourceMapURL) {
maybeCacheSourceMap(filename, content, this, false, undefined, script.sourceMapURL);
}
return runScriptInThisContext(script, true, false);
}
const params = [ 'exports', 'require', 'module', '__filename', '__dirname' ];
try {
const result = internalCompileFunction(
content, // code,
filename, // filename
0, // lineOffset
0, // columnOffset,
codeCache, // cachedData
false, // produceCachedData
undefined, // parsingContext
undefined, // contextExtensions
params, // params
hostDefinedOptionId, // hostDefinedOptionId
importModuleDynamically, // importModuleDynamically
);
// The code cache is used for SEAs only.
if (codeCache &&
result.cachedDataRejected !== false &&
internalBinding('sea').isSea()) {
process.emitWarning('Code cache data rejected.');
}
// Cache the source map for the module if present.
if (result.sourceMapURL) {
maybeCacheSourceMap(filename, content, this, false, undefined, result.sourceMapURL);
}
return result.function;
} catch (err) {
if (process.mainModule === cjsModuleInstance) {
const { enrichCJSError } = require('internal/modules/esm/translators');
enrichCJSError(err, content, filename);
}
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.
* @param {string} content The source code of the module
* @param {string} filename The file path of the module
*/
Module.prototype._compile = function(content, filename) {
let moduleURL;
let redirects;
const manifest = policy()?.manifest;
if (manifest) {
moduleURL = pathToFileURL(filename);
redirects = manifest.getDependencyMapper(moduleURL);
manifest.assertIntegrity(moduleURL, content);
}
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(); }
setHasStartedUserCJSExecution();
if (inspectorWrapper) {
result = inspectorWrapper(compiledWrapper, thisValue, exports,
require, module, filename, dirname);
} else {
result = ReflectApply(compiledWrapper, thisValue,
[exports, require, module, filename, dirname]);
}
if (requireDepth === 0) { statCache = null; }
return result;
};
/**
* Native handler for `.js` files.
* @param {Module} module The module to compile
* @param {string} filename The file path of the module
*/
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 = packageJsonReader.getNearestParentPackageJSON(filename);
// Function require shouldn't be used in ES modules.
if (pkg?.data.type === 'module') {
// This is an error path because `require` of a `.js` file in a `"type": "module"` scope is not allowed.
const parent = moduleParentCache.get(module);
const parentPath = parent?.filename;
const packageJsonPath = path.resolve(pkg.path, 'package.json');
const usesEsm = containsModuleSyntax(content, filename);
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 handler for `.json` files.
* @param {Module} module The module to compile
* @param {string} filename The file path of the module
*/
Module._extensions['.json'] = function(module, filename) {
const content = fs.readFileSync(filename, 'utf8');
const manifest = policy()?.manifest;
if (manifest) {
const moduleURL = pathToFileURL(filename);
manifest.assertIntegrity(moduleURL, content);
}
try {
setOwnProperty(module, 'exports', JSONParse(stripBOM(content)));
} catch (err) {
err.message = filename + ': ' + err.message;
throw err;
}
};
/**
* Native handler for `.node` files.
* @param {Module} module The module to compile
* @param {string} filename The file path of the module
*/
Module._extensions['.node'] = function(module, filename) {
const manifest = policy()?.manifest;
if (manifest) {
const content = fs.readFileSync(filename);
const moduleURL = pathToFileURL(filename);
manifest.assertIntegrity(moduleURL, content);
}
// Be aware this doesn't use `content`
return process.dlopen(module, path.toNamespacedPath(filename));
};
/**
* Creates a `require` function that can be used to load modules from the specified path.
* @param {string} filename The path to the module
*/
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';
/**
* Creates a new `require` function that can be used to load modules.
* @param {string | URL} filename The path or URL to the module context for this `require`
* @throws {ERR_INVALID_ARG_VALUE} If `filename` is not a string or URL, or if it is a relative path that cannot be
* resolved to an absolute path.
*/
function createRequire(filename) {
let filepath;
if (isURL(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;
/**
* Define the paths to use for resolving a module.
*/
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);
};
/**
* Handle modules loaded via `--require`.
* @param {string[]} requests The values of `--require`
*/
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++) {
internalRequire(parent, requests[n]);
}
isPreloading = false;
};
/**
* If the user has overridden an export from a builtin module, this function can ensure that the override is used in
* both CommonJS and ES module contexts.
*/
Module.syncBuiltinESMExports = function syncBuiltinESMExports() {
for (const mod of BuiltinModule.map.values()) {
if (BuiltinModule.canBeRequiredWithoutScheme(mod.id)) {
mod.syncExports();
}
}
};
ObjectDefineProperty(Module.prototype, 'constructor', {
__proto__: null,
get: function() {
return policy() ? undefined : Module;
},
configurable: false,
enumerable: false,
});
// Backwards compatibility
Module.Module = Module;
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