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https://github.com/zhigang1992/create-react-app.git
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11737bc786
* Add new overrides option * Add file to package.json * Create our own loader * Remove overrides * We have to use a real babel option * Add comments
33 lines
1.0 KiB
JavaScript
33 lines
1.0 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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const crypto = require('crypto');
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module.exports = {
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// This function transforms the Babel configuration on a per-file basis
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config(config, { source }) {
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// Babel Macros are notoriously hard to cache, so they shouldn't be
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// https://github.com/babel/babel/issues/8497
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// We naively detect macros using their package suffix and insert a random
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// caller name, a valid option accepted by Babel, to compose a one-time
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// cacheIdentifier for the file. We cannot tune the loader options on a per
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// file basis.
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if (source.indexOf('.macro') !== -1 || source.indexOf('/macro') !== -1) {
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return {
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...config.options,
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caller: {
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name: `babel-preset-react-app:${crypto
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.randomBytes(32)
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.toString('hex')}`,
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},
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};
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}
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return config.options;
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},
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};
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