| 1 | /**
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| 2 | * ref:
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| 3 | * https://github.com/facebook/create-react-app/blob/master/packages/babel-preset-react-app/webpack-overrides.js
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| 4 | */
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| 5 | import crypto from 'crypto';
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| 6 |
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| 7 | const macroCheck = new RegExp('[./]macro');
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| 8 |
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| 9 | export default function() {
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| 10 | return {
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| 11 | // This function transforms the Babel configuration on a per-file basis
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| 12 | config(config, { source }) {
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| 13 | // Babel Macros are notoriously hard to cache, so they shouldn't be
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| 14 | // https://github.com/babel/babel/issues/8497
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| 15 | // We naively detect macros using their package suffix and add a random token
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| 16 | // to the caller, a valid option accepted by Babel, to compose a one-time
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| 17 | // cacheIdentifier for the file. We cannot tune the loader options on a per
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| 18 | // file basis.
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| 19 | if (macroCheck.test(source)) {
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| 20 | return Object.assign({}, config.options, {
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| 21 | caller: Object.assign({}, config.options.caller, {
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| 22 | craInvalidationToken: crypto.randomBytes(32).toString('hex'),
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| 23 | }),
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| 24 | });
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| 25 | }
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| 26 | return config.options;
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| 27 | },
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| 28 | };
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| 29 | }
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