34 lines
1.1 KiB
JavaScript
34 lines
1.1 KiB
JavaScript
|
/**
|
||
|
|
* Copyright (c) 2015-present, Facebook, Inc.
|
||
|
|
*
|
||
|
|
* This source code is licensed under the MIT license found in the
|
||
|
|
* LICENSE file in the root directory of this source tree.
|
||
|
|
*/
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
const crypto = require('crypto');
|
||
|
|
|
||
|
|
const macroCheck = new RegExp('[./]macro');
|
||
|
|
|
||
|
|
module.exports = function () {
|
||
|
|
return {
|
||
|
|
// This function transforms the Babel configuration on a per-file basis
|
||
|
|
config(config, { source }) {
|
||
|
|
// Babel Macros are notoriously hard to cache, so they shouldn't be
|
||
|
|
// https://github.com/babel/babel/issues/8497
|
||
|
|
// We naively detect macros using their package suffix and add a random token
|
||
|
|
// to the caller, a valid option accepted by Babel, to compose a one-time
|
||
|
|
// cacheIdentifier for the file. We cannot tune the loader options on a per
|
||
|
|
// file basis.
|
||
|
|
if (macroCheck.test(source)) {
|
||
|
|
return Object.assign({}, config.options, {
|
||
|
|
caller: Object.assign({}, config.options.caller, {
|
||
|
|
craInvalidationToken: crypto.randomBytes(32).toString('hex'),
|
||
|
|
}),
|
||
|
|
});
|
||
|
|
}
|
||
|
|
return config.options;
|
||
|
|
},
|
||
|
|
};
|
||
|
|
};
|