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2 years ago
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.default = defaultResolver;
function _path() {
const data = require('path');
_path = function () {
return data;
};
return data;
}
function _jestPnpResolver() {
const data = _interopRequireDefault(require('jest-pnp-resolver'));
_jestPnpResolver = function () {
return data;
};
return data;
}
function _resolve() {
const data = require('resolve');
_resolve = function () {
return data;
};
return data;
}
var _resolve2 = require('resolve.exports');
var _fileWalkers = require('./fileWalkers');
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.
*/
function defaultResolver(path, options) {
// Yarn 2 adds support to `resolve` automatically so the pnpResolver is only
// needed for Yarn 1 which implements version 1 of the pnp spec
if (process.versions.pnp === '1') {
return (0, _jestPnpResolver().default)(path, options);
}
const result = (0, _resolve().sync)(path, {
...options,
isDirectory: _fileWalkers.isDirectory,
isFile: _fileWalkers.isFile,
packageFilter: createPackageFilter(
options.conditions,
options.packageFilter
),
preserveSymlinks: false,
readPackageSync,
realpathSync: _fileWalkers.realpathSync
}); // Dereference symlinks to ensure we don't create a separate
// module instance depending on how it was referenced.
return (0, _fileWalkers.realpathSync)(result);
}
/*
* helper functions
*/
function readPackageSync(_, file) {
return (0, _fileWalkers.readPackageCached)(file);
}
function createPackageFilter(conditions, userFilter) {
function attemptExportsFallback(pkg) {
const options = conditions
? {
conditions,
unsafe: true
} // no conditions were passed - let's assume this is Jest internal and it should be `require`
: {
browser: false,
require: true
};
try {
return (0, _resolve2.resolve)(pkg, '.', options);
} catch {
return undefined;
}
}
return function packageFilter(pkg, packageDir) {
let filteredPkg = pkg;
if (userFilter) {
filteredPkg = userFilter(filteredPkg, packageDir);
}
if (filteredPkg.main != null) {
return filteredPkg;
}
const indexInRoot = (0, _path().resolve)(packageDir, './index.js'); // if the module contains an `index.js` file in root, `resolve` will request
// that if there is no `main`. Since we don't wanna break that, add this
// check
if ((0, _fileWalkers.isFile)(indexInRoot)) {
return filteredPkg;
}
return {...filteredPkg, main: attemptExportsFallback(filteredPkg)};
};
}