setup-python/node_modules/jest-resolve/build/nodeModulesPaths.js
Danny McCormick 39c08a0eaa Initial pass
2019-06-26 21:12:00 -04:00

93 lines
2.3 KiB
JavaScript

'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.default = nodeModulesPaths;
function _path() {
const data = _interopRequireDefault(require('path'));
_path = function _path() {
return data;
};
return data;
}
function _realpathNative() {
const data = require('realpath-native');
_realpathNative = function _realpathNative() {
return data;
};
return data;
}
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {default: obj};
}
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* Adapted from: https://github.com/substack/node-resolve
*/
function nodeModulesPaths(basedir, options) {
const modules =
options && options.moduleDirectory
? Array.from(options.moduleDirectory)
: ['node_modules']; // ensure that `basedir` is an absolute path at this point,
// resolving against the process' current working directory
const basedirAbs = _path().default.resolve(basedir);
let prefix = '/';
if (/^([A-Za-z]:)/.test(basedirAbs)) {
prefix = '';
} else if (/^\\\\/.test(basedirAbs)) {
prefix = '\\\\';
} // The node resolution algorithm (as implemented by NodeJS and TypeScript)
// traverses parents of the physical path, not the symlinked path
let physicalBasedir;
try {
physicalBasedir = (0, _realpathNative().sync)(basedirAbs);
} catch (err) {
// realpath can throw, e.g. on mapped drives
physicalBasedir = basedirAbs;
}
const paths = [physicalBasedir];
let parsed = _path().default.parse(physicalBasedir);
while (parsed.dir !== paths[paths.length - 1]) {
paths.push(parsed.dir);
parsed = _path().default.parse(parsed.dir);
}
const dirs = paths
.reduce(
(dirs, aPath) =>
dirs.concat(
modules.map(moduleDir =>
_path().default.isAbsolute(moduleDir)
? aPath === basedirAbs
? moduleDir
: ''
: _path().default.join(prefix, aPath, moduleDir)
)
),
[]
)
.filter(dir => dir !== '');
return options.paths ? dirs.concat(options.paths) : dirs;
}