| 1 | module.exports = (api) => {
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| 2 | api.cache.using(() => process.env.NODE_ENV);
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| 3 |
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| 4 | return {
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| 5 | presets: [
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| 6 | [
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| 7 | require.resolve('@babel/preset-env'),
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| 8 | {
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| 9 | modules: api.env('test') ? 'commonjs' : false,
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| 10 | useBuiltIns: 'usage',
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| 11 | corejs: { version: '3.12', proposals: true }
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| 12 | }
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| 13 | ],
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| 14 | require.resolve('@babel/preset-react')
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| 15 | ],
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| 16 | plugins: [
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| 17 | require.resolve('@babel/plugin-syntax-dynamic-import'),
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| 18 | [require.resolve('@babel/plugin-proposal-decorators'), { legacy: true }]
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| 19 | ].filter(Boolean)
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| 20 | };
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| 21 | }
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