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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 {
JSON,
Object,
ObjectPrototype,
Reflect,
SafeMap,
StringPrototype,
} = primordials;
const { NativeModule } = require('internal/bootstrap/loaders');
const {
maybeCacheSourceMap,
rekeySourceMap
} = require('internal/source_map/source_map_cache');
const { pathToFileURL, fileURLToPath, URL } = require('internal/url');
const { deprecate } = 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 {
internalModuleReadJSON,
internalModuleStat
} = internalBinding('fs');
const { safeGetenv } = internalBinding('credentials');
const {
makeRequireFunction,
normalizeReferrerURL,
stripBOM,
loadNativeModule
} = require('internal/modules/cjs/helpers');
const { getOptionValue } = require('internal/options');
const enableSourceMaps = getOptionValue('--enable-source-maps');
const preserveSymlinks = getOptionValue('--preserve-symlinks');
const preserveSymlinksMain = getOptionValue('--preserve-symlinks-main');
const experimentalModules = getOptionValue('--experimental-modules');
const manifest = getOptionValue('--experimental-policy') ?
require('internal/process/policy').manifest :
null;
const { compileFunction } = internalBinding('contextify');
const {
ERR_INVALID_ARG_VALUE,
ERR_INVALID_OPT_VALUE,
ERR_REQUIRE_ESM
} = require('internal/errors').codes;
const { validateString } = require('internal/validators');
const {
resolveMainPath,
shouldUseESMLoader,
runMainESM
} = require('internal/bootstrap/pre_execution');
const pendingDeprecation = getOptionValue('--pending-deprecation');
module.exports = { wrapSafe, Module, toRealPath, readPackageScope };
let asyncESM, ModuleJob, ModuleWrap, kInstantiated;
const {
CHAR_FORWARD_SLASH,
CHAR_BACKWARD_SLASH,
CHAR_COLON
} = require('internal/constants');
const isWindows = process.platform === 'win32';
const relativeResolveCache = Object.create(null);
let requireDepth = 0;
let statCache = null;
function enrichCJSError(err) {
const stack = err.stack.split('\n');
const lineWithErr = stack[1];
/*
The regular expression below targets the most common import statement
usage. However, some cases are not matching, cases like import statement
after a comment block and/or after a variable definition.
*/
if (err.message.startsWith('Unexpected token \'export\'') ||
(/^\s*import(?=[ {'"*])\s*(?![ (])/).test(lineWithErr)) {
process.emitWarning(
'To load an ES module, set "type": "module" in the package.json or use ' +
'the .mjs extension.',
undefined,
undefined,
undefined,
true);
}
}
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) statCache.set(filename, result);
return result;
}
function updateChildren(parent, child, scan) {
const children = parent && parent.children;
if (children && !(scan && children.includes(child)))
children.push(child);
}
function Module(id = '', parent) {
this.id = id;
this.path = path.dirname(id);
this.exports = {};
this.parent = parent;
updateChildren(parent, this, false);
this.filename = null;
this.loaded = false;
this.children = [];
}
const builtinModules = [];
for (const [id, mod] of NativeModule.map) {
if (mod.canBeRequiredByUsers) {
builtinModules.push(id);
}
}
Object.freeze(builtinModules);
Module.builtinModules = builtinModules;
Module._cache = Object.create(null);
Module._pathCache = Object.create(null);
Module._extensions = Object.create(null);
var 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, {
set(target, property, value, receiver) {
patched = true;
return Reflect.set(target, property, value, receiver);
},
defineProperty(target, property, descriptor) {
patched = true;
return Object.defineProperty(target, property, descriptor);
}
});
Object.defineProperty(Module, 'wrap', {
get() {
return wrap;
},
set(value) {
patched = true;
wrap = value;
}
});
Object.defineProperty(Module, 'wrapper', {
get() {
return wrapperProxy;
},
set(value) {
patched = true;
wrapperProxy = value;
}
});
const debug = require('internal/util/debuglog').debuglog('module');
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 json = internalModuleReadJSON(path.toNamespacedPath(jsonPath));
if (json === undefined) {
packageJsonCache.set(jsonPath, false);
return false;
}
if (manifest) {
const jsonURL = pathToFileURL(jsonPath);
manifest.assertIntegrity(jsonURL, json);
}
try {
const parsed = JSON.parse(json);
const filtered = {
main: parsed.main,
exports: parsed.exports,
type: parsed.type
};
packageJsonCache.set(jsonPath, filtered);
return filtered;
} catch (e) {
e.path = jsonPath;
e.message = 'Error parsing ' + jsonPath + ': ' + e.message;
throw e;
}
}
function readPackageScope(checkPath) {
const rootSeparatorIndex = checkPath.indexOf(path.sep);
let separatorIndex;
while (
(separatorIndex = checkPath.lastIndexOf(path.sep)) > rootSeparatorIndex
) {
checkPath = checkPath.slice(0, separatorIndex);
if (checkPath.endsWith(path.sep + 'node_modules'))
return false;
const pjson = readPackage(checkPath);
if (pjson) return {
path: checkPath,
data: pjson
};
}
return false;
}
function readPackageMain(requestPath) {
const pkg = readPackage(requestPath);
return pkg ? pkg.main : undefined;
}
function readPackageExports(requestPath) {
const pkg = readPackage(requestPath);
return pkg ? pkg.exports : undefined;
}
function tryPackage(requestPath, exts, isMain, originalPath) {
const pkg = readPackageMain(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 '${filename}'. ` +
'Please verify that the package.json has a valid "main" entry'
);
err.code = 'MODULE_NOT_FOUND';
err.path = path.resolve(requestPath, 'package.json');
err.requestPath = originalPath;
// TODO(BridgeAR): Add the requireStack as well.
throw err;
} else if (pendingDeprecation) {
const jsonPath = path.resolve(requestPath, 'package.json');
process.emitWarning(
`Invalid 'main' field in '${jsonPath}' of '${pkg}'. ` +
'Please either fix that or report it to the module author',
'DeprecationWarning',
'DEP0128'
);
}
}
return actual;
}
// In order to minimize unnecessary lstat() calls,
// this cache is a list of known-real paths.
// Set to an empty Map to reset.
const realpathCache = new Map();
// Check if the file exists and is not a directory
// if using --preserve-symlinks and isMain is false,
// keep symlinks intact, otherwise resolve to the
// absolute realpath.
function tryFile(requestPath, isMain) {
const rc = stat(requestPath);
if (preserveSymlinks && !isMain) {
return rc === 0 && path.resolve(requestPath);
}
return rc === 0 && toRealPath(requestPath);
}
function toRealPath(requestPath) {
return fs.realpathSync(requestPath, {
[internalFS.realpathCacheKey]: realpathCache
});
}
// Given a path, check if the file exists with any of the set extensions
function tryExtensions(p, exts, isMain) {
for (var i = 0; i < exts.length; i++) {
const filename = tryFile(p + exts[i], isMain);
if (filename) {
return filename;
}
}
return false;
}
// Find the longest (possibly multi-dot) extension registered in
// Module._extensions
function findLongestRegisteredExtension(filename) {
const name = path.basename(filename);
let currentExtension;
let index;
let startIndex = 0;
while ((index = name.indexOf('.', startIndex)) !== -1) {
startIndex = index + 1;
if (index === 0) continue; // Skip dotfiles like .gitignore
currentExtension = name.slice(index);
if (Module._extensions[currentExtension]) return currentExtension;
}
return '.js';
}
// This only applies to requests of a specific form:
// 1. name/.*
// 2. @scope/name/.*
const EXPORTS_PATTERN = /^((?:@[^/\\%]+\/)?[^./\\%][^/\\%]*)(\/.*)?$/;
function resolveExports(nmPath, request, absoluteRequest) {
// The implementation's behavior is meant to mirror resolution in ESM.
if (!absoluteRequest) {
const [, name, expansion = ''] =
StringPrototype.match(request, EXPORTS_PATTERN) || [];
if (!name) {
return path.resolve(nmPath, request);
}
const basePath = path.resolve(nmPath, name);
const pkgExports = readPackageExports(basePath);
const mappingKey = `.${expansion}`;
if (typeof pkgExports === 'object' && pkgExports !== null) {
if (ObjectPrototype.hasOwnProperty(pkgExports, mappingKey)) {
const mapping = pkgExports[mappingKey];
return resolveExportsTarget(pathToFileURL(basePath + '/'), mapping, '',
basePath, mappingKey);
}
let dirMatch = '';
for (const candidateKey of Object.keys(pkgExports)) {
if (candidateKey[candidateKey.length - 1] !== '/') continue;
if (candidateKey.length > dirMatch.length &&
StringPrototype.startsWith(mappingKey, candidateKey)) {
dirMatch = candidateKey;
}
}
if (dirMatch !== '') {
const mapping = pkgExports[dirMatch];
const subpath = StringPrototype.slice(mappingKey, dirMatch.length);
return resolveExportsTarget(pathToFileURL(basePath + '/'), mapping,
subpath, basePath, mappingKey);
}
}
if (mappingKey === '.' && typeof pkgExports === 'string') {
return resolveExportsTarget(pathToFileURL(basePath + '/'), pkgExports,
'', basePath, mappingKey);
}
if (pkgExports != null) {
// eslint-disable-next-line no-restricted-syntax
const e = new Error(`Package exports for '${basePath}' do not define ` +
`a '${mappingKey}' subpath`);
e.code = 'MODULE_NOT_FOUND';
throw e;
}
}
return path.resolve(nmPath, request);
}
function resolveExportsTarget(pkgPath, target, subpath, basePath, mappingKey) {
if (typeof target === 'string') {
if (target.startsWith('./') &&
(subpath.length === 0 || target.endsWith('/'))) {
const resolvedTarget = new URL(target, pkgPath);
const pkgPathPath = pkgPath.pathname;
const resolvedTargetPath = resolvedTarget.pathname;
if (StringPrototype.startsWith(resolvedTargetPath, pkgPathPath) &&
StringPrototype.indexOf(resolvedTargetPath, '/node_modules/',
pkgPathPath.length - 1) === -1) {
const resolved = new URL(subpath, resolvedTarget);
const resolvedPath = resolved.pathname;
if (StringPrototype.startsWith(resolvedPath, resolvedTargetPath) &&
StringPrototype.indexOf(resolvedPath, '/node_modules/',
pkgPathPath.length - 1) === -1) {
return fileURLToPath(resolved);
}
}
}
} else if (Array.isArray(target)) {
for (const targetValue of target) {
if (typeof targetValue !== 'string') continue;
try {
return resolveExportsTarget(pkgPath, targetValue, subpath, basePath,
mappingKey);
} catch (e) {
if (e.code !== 'MODULE_NOT_FOUND') throw e;
}
}
}
// eslint-disable-next-line no-restricted-syntax
const e = new Error(`Package exports for '${basePath}' do not define a ` +
`valid '${mappingKey}' target${subpath ? 'for ' + subpath : ''}`);
e.code = 'MODULE_NOT_FOUND';
throw e;
}
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' +
(paths.length === 1 ? paths[0] : paths.join('\x00'));
const entry = Module._pathCache[cacheKey];
if (entry)
return entry;
var exts;
var trailingSlash = request.length > 0 &&
request.charCodeAt(request.length - 1) === CHAR_FORWARD_SLASH;
if (!trailingSlash) {
trailingSlash = /(?:^|\/)\.?\.$/.test(request);
}
// For each path
for (var 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;
var basePath = resolveExports(curPath, request, absoluteRequest);
var filename;
var 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 = Object.keys(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 = Object.keys(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 (from.charCodeAt(from.length - 1) === CHAR_BACKWARD_SLASH &&
from.charCodeAt(from.length - 2) === CHAR_COLON)
return [from + 'node_modules'];
const paths = [];
var p = 0;
var last = from.length;
for (var i = from.length - 1; i >= 0; --i) {
const code = from.charCodeAt(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)
paths.push(from.slice(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 = [];
var p = 0;
var last = from.length;
for (var i = from.length - 1; i >= 0; --i) {
const code = from.charCodeAt(i);
if (code === CHAR_FORWARD_SLASH) {
if (p !== nmLen)
paths.push(from.slice(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.
paths.push('/node_modules');
return paths;
};
}
Module._resolveLookupPaths = function(request, parent) {
if (NativeModule.canBeRequiredByUsers(request)) {
debug('looking for %j in []', request);
return null;
}
// Check for node modules paths.
if (request.charAt(0) !== '.' ||
(request.length > 1 &&
request.charAt(1) !== '.' &&
request.charAt(1) !== '/' &&
(!isWindows || request.charAt(1) !== '\\'))) {
let paths = modulePaths;
if (parent != null && parent.paths && parent.paths.length) {
paths = parent.paths.concat(paths);
}
debug('looking for %j in %j', request, paths);
return paths.length > 0 ? paths : null;
}
// With --eval, parent.id is not set and 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 with eval there is no filename
const mainPaths = ['.'].concat(Module._nodeModulePaths('.'), modulePaths);
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;
};
// 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);
return cachedModule.exports;
}
delete relativeResolveCache[relResolveCacheIdentifier];
}
}
const filename = Module._resolveFilename(request, parent, isMain);
const cachedModule = Module._cache[filename];
if (cachedModule !== undefined) {
updateChildren(parent, cachedModule, true);
return cachedModule.exports;
}
const mod = loadNativeModule(filename, request, experimentalModules);
if (mod && mod.canBeRequiredByUsers) return mod.exports;
// Don't call updateChildren(), Module constructor already does.
const module = 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 {
// Intercept exceptions that occur during the first tick and rekey them
// on error instance rather than module instance (which will immediately be
// garbage collected).
if (enableSourceMaps) {
try {
module.load(filename);
} catch (err) {
rekeySourceMap(Module._cache[filename], err);
throw err; /* node-do-not-add-exception-line */
}
} else {
module.load(filename);
}
threw = false;
} finally {
if (threw) {
delete Module._cache[filename];
if (parent !== undefined) {
delete relativeResolveCache[relResolveCacheIdentifier];
}
}
}
return module.exports;
};
Module._resolveFilename = function(request, parent, isMain, options) {
if (NativeModule.canBeRequiredByUsers(request)) {
return request;
}
var paths;
if (typeof options === 'object' && options !== null) {
if (Array.isArray(options.paths)) {
const isRelative = request.startsWith('./') ||
request.startsWith('../') ||
((isWindows && request.startsWith('.\\')) ||
request.startsWith('..\\'));
if (isRelative) {
paths = options.paths;
} else {
const fakeParent = new Module('', null);
paths = [];
for (var i = 0; i < options.paths.length; i++) {
const path = options.paths[i];
fakeParent.paths = Module._nodeModulePaths(path);
const lookupPaths = Module._resolveLookupPaths(request, fakeParent);
for (var j = 0; j < lookupPaths.length; j++) {
if (!paths.includes(lookupPaths[j]))
paths.push(lookupPaths[j]);
}
}
}
} else if (options.paths === undefined) {
paths = Module._resolveLookupPaths(request, parent);
} else {
throw new ERR_INVALID_OPT_VALUE('options.paths', options.paths);
}
} else {
paths = Module._resolveLookupPaths(request, parent);
}
// Look up the filename first, since that's the cache key.
const filename = Module._findPath(request, paths, isMain);
if (!filename) {
const requireStack = [];
for (var cursor = parent;
cursor;
cursor = cursor.parent) {
requireStack.push(cursor.filename || cursor.id);
}
let message = `Cannot find module '${request}'`;
if (requireStack.length > 0) {
message = message + '\nRequire stack:\n- ' + requireStack.join('\n- ');
}
// eslint-disable-next-line no-restricted-syntax
var err = new Error(message);
err.code = 'MODULE_NOT_FOUND';
err.requireStack = requireStack;
throw err;
}
return filename;
};
// 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 (filename.endsWith('.mjs') && !Module._extensions['.mjs']) {
throw new ERR_REQUIRE_ESM(filename);
}
Module._extensions[extension](this, filename);
this.loaded = true;
if (experimentalModules) {
const ESMLoader = asyncESM.ESMLoader;
const url = `${pathToFileURL(filename)}`;
const module = ESMLoader.moduleMap.get(url);
// Create module entry at load time to snapshot exports correctly
const exports = this.exports;
// Called from cjs translator
if (module !== undefined && module.module !== undefined) {
if (module.module.getStatus() >= kInstantiated)
module.module.setExport('default', exports);
} else {
// Preemptively cache
// We use a function to defer promise creation for async hooks.
ESMLoader.moduleMap.set(
url,
// Module job creation will start promises.
// We make it a function to lazily trigger those promises
// for async hooks compatibility.
() => new ModuleJob(ESMLoader, url, () =>
new ModuleWrap(url, undefined, ['default'], function() {
this.setExport('default', exports);
})
, false /* isMain */, false /* inspectBrk */)
);
}
}
};
// 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)
var 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: experimentalModules ? async (specifier) => {
const loader = asyncESM.ESMLoader;
return loader.import(specifier, normalizeReferrerURL(filename));
} : undefined,
});
}
let compiled;
try {
compiled = compileFunction(
content,
filename,
0,
0,
undefined,
false,
undefined,
[],
[
'exports',
'require',
'module',
'__filename',
'__dirname',
]
);
} catch (err) {
if (experimentalModules && process.mainModule === cjsModuleInstance)
enrichCJSError(err);
throw err;
}
if (experimentalModules) {
const { callbackMap } = internalBinding('module_wrap');
callbackMap.set(compiled.cacheKey, {
importModuleDynamically: async (specifier) => {
const loader = asyncESM.ESMLoader;
return loader.import(specifier, normalizeReferrerURL(filename));
}
});
}
return compiled.function;
}
// 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 (manifest) {
moduleURL = pathToFileURL(filename);
redirects = manifest.getRedirector(moduleURL);
manifest.assertIntegrity(moduleURL, content);
}
maybeCacheSourceMap(filename, content, this);
const compiledWrapper = wrapSafe(filename, content, this);
var 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]) {
resolvedArgv = Module._resolveFilename(process.argv[1], null, false);
} else {
resolvedArgv = 'repl';
}
}
// Set breakpoint on module start
if (!hasPausedEntry && filename === resolvedArgv) {
hasPausedEntry = true;
inspectorWrapper = internalBinding('inspector').callAndPauseOnStart;
}
}
const dirname = path.dirname(filename);
const require = makeRequireFunction(this, redirects);
var result;
const exports = this.exports;
const thisValue = exports;
const module = this;
if (requireDepth === 0) statCache = new Map();
if (inspectorWrapper) {
result = inspectorWrapper(compiledWrapper, thisValue, exports,
require, module, filename, dirname);
} else {
result = compiledWrapper.call(thisValue, exports, require, module,
filename, dirname);
}
if (requireDepth === 0) statCache = null;
return result;
};
// Native extension for .js
let warnRequireESM = true;
Module._extensions['.js'] = function(module, filename) {
if (filename.endsWith('.js')) {
const pkg = readPackageScope(filename);
if (pkg && pkg.data && pkg.data.type === 'module') {
if (warnRequireESM) {
const parentPath = module.parent && module.parent.filename;
const basename = parentPath &&
path.basename(filename) === path.basename(parentPath) ?
filename : path.basename(filename);
process.emitWarning(
'require() of ES modules is not supported.\nrequire() of ' +
`${filename} ${parentPath ? `from ${module.parent.filename} ` : ''}` +
'is an ES module file as it is a .js file whose nearest parent ' +
'package.json contains "type": "module" which defines all .js ' +
'files in that package scope as ES modules.\nInstead rename ' +
`${basename} to end in .cjs, change the requiring code to use ` +
'import(), or remove "type": "module" from ' +
`${path.resolve(pkg.path, 'package.json')}.`,
undefined,
undefined,
undefined,
true
);
warnRequireESM = false;
}
if (experimentalModules) {
throw new ERR_REQUIRE_ESM(filename);
}
}
}
const content = fs.readFileSync(filename, 'utf8');
module._compile(content, filename);
};
// Native extension for .json
Module._extensions['.json'] = function(module, filename) {
const content = fs.readFileSync(filename, 'utf8');
if (manifest) {
const moduleURL = pathToFileURL(filename);
manifest.assertIntegrity(moduleURL, content);
}
try {
module.exports = JSON.parse(stripBOM(content));
} catch (err) {
err.message = filename + ': ' + err.message;
throw err;
}
};
// Native extension for .node
Module._extensions['.node'] = function(module, filename) {
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));
};
// Bootstrap main module.
Module.runMain = function(main = process.argv[1]) {
const resolvedMain = resolveMainPath(main);
const useESMLoader = shouldUseESMLoader(resolvedMain);
if (useESMLoader) {
runMainESM(resolvedMain || main);
} else {
Module._load(main, null, true);
}
};
function createRequireFromPath(filename) {
// Allow a directory to be passed as the filename
const trailingSlash =
filename.endsWith('/') || (isWindows && filename.endsWith('\\'));
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);
}
Module.createRequireFromPath = deprecate(
createRequireFromPath,
'Module.createRequireFromPath() is deprecated. ' +
'Use Module.createRequire() instead.',
'DEP0130'
);
const createRequireError = 'must be a file URL object, file URL string, or ' +
'absolute path string';
function createRequire(filename) {
let filepath;
if (filename instanceof URL ||
(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() {
var homeDir;
var nodePath;
if (isWindows) {
homeDir = process.env.USERPROFILE;
nodePath = process.env.NODE_PATH;
} else {
homeDir = safeGetenv('HOME');
nodePath = safeGetenv('NODE_PATH');
}
// $PREFIX/lib/node, where $PREFIX is the root of the Node.js installation.
var prefixDir;
// process.execPath is $PREFIX/bin/node except on Windows where it is
// $PREFIX\node.exe.
if (isWindows) {
prefixDir = path.resolve(process.execPath, '..');
} else {
prefixDir = path.resolve(process.execPath, '..', '..');
}
var paths = [path.resolve(prefixDir, 'lib', 'node')];
if (homeDir) {
paths.unshift(path.resolve(homeDir, '.node_libraries'));
paths.unshift(path.resolve(homeDir, '.node_modules'));
}
if (nodePath) {
paths = nodePath.split(path.delimiter).filter(function pathsFilterCB(path) {
return !!path;
}).concat(paths);
}
modulePaths = paths;
// Clone as a shallow copy, for introspection.
Module.globalPaths = modulePaths.slice(0);
};
Module._preloadModules = function(requests) {
if (!Array.isArray(requests))
return;
// 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') {
throw e;
}
}
for (var n = 0; n < requests.length; n++)
parent.require(requests[n]);
};
Module.syncBuiltinESMExports = function syncBuiltinESMExports() {
for (const mod of NativeModule.map.values()) {
if (mod.canBeRequiredByUsers) {
mod.syncExports();
}
}
};
// Backwards compatibility
Module.Module = Module;
// We have to load the esm things after module.exports!
if (experimentalModules) {
ModuleJob = require('internal/modules/esm/module_job');
asyncESM = require('internal/process/esm_loader');
({ ModuleWrap, kInstantiated } = internalBinding('module_wrap'));
}