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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 11x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 116x 11x 11x 11x 11x 11x | /**
* @license Apache-2.0
*
* Copyright (c) 2019 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
/*
* WARNING: this is based an internal file within Node.js. The implementation uses private methods exposed on the `Module` object. Given that they are private, breakage is possible.
*
* [1]: https://github.com/nodejs/node/blob/0c1e93b9efadfc9fae74907a631908477c7d085e/lib/internal/modules/cjs/helpers.js#L10
*/
// MODULES //
var Module = require( 'module' );
var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
var format = require( '@stdlib/string/format' );
// VARIABLES //
/* eslint-disable no-underscore-dangle */
var resolveFilename = Module._resolveFilename;
var resolveLookupPaths = Module._resolveLookupPaths;
var extensions = Module._extensions;
var cache = Module._cache;
var main = require.main;
/* eslint-enable no-underscore-dangle */
// MAIN //
/**
* Returns a `require` function.
*
* @private
* @param {Module} module - module used as the context for `require`
* @returns {Function} require function
*/
function createRequire( module ) {
/**
* Attempts to load a module.
*
* @private
* @param {string} path - module id
* @returns {*} module
*/
function require( path ) {
return module.require( path );
}
/**
* Attempts to resolve a module.
*
* @private
* @param {string} name - module
* @param {Object} [options] - options
* @throws {TypeError} first argument must be a string
* @returns {string} module filepath
*/
function resolve( name, options ) {
if ( !isString( name ) ) {
throw new TypeError( format( 'invalid argument. First argument must be a string. Value: `%s`.', name ) );
}
return resolveFilename( name, module, false, options );
}
/**
* Attempts to resolve look-up paths.
*
* @private
* @param {string} name - module
* @throws {TypeError} must provide a string
* @returns {(StringArray|null)} resolved paths
*/
function paths( name ) {
if ( !isString( name ) ) {
throw new TypeError( format( 'invalid argument. Must provide a string. Value: `%s`.', name ) );
}
return resolveLookupPaths( name, module, true );
}
// Script entry point when Node.js process launched:
require.main = main;
// Attach method to resolve a module:
resolve.paths = paths;
require.resolve = resolve;
// Support for extra extension types:
require.extensions = extensions;
// Use the existing module cache:
require.cache = cache;
return require;
}
// EXPORTS //
module.exports = createRequire;
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