40 lines
987 B
JavaScript
40 lines
987 B
JavaScript
'use strict';
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const presets = [
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[
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'@babel/preset-env',
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{
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modules: false,
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// see also zloirock/core-js https://bit.ly/2JLnrgw
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useBuiltIns: 'usage',
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corejs: 3,
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// new in babel 7.9.0 https://babeljs.io/blog/2020/03/16/7.9.0
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bugfixes: true
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}
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],
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'@babel/preset-react',
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'@babel/preset-flow'
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];
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module.exports = api => {
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// https://babeljs.io/docs/en/config-files#apicache
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api.cache.using(() => process.env.NODE_ENV);
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// https://babeljs.io/docs/en/config-files#apienv
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const isDev = api.env('development');
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const plugins = [
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[
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'@babel/plugin-transform-runtime',
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{
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corejs: false,
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helpers: true,
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regenerator: true,
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useESModules: true
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}
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],
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'@babel/plugin-syntax-dynamic-import',
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'@babel/plugin-proposal-class-properties',
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'@babel/plugin-proposal-do-expressions',
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isDev ? 'react-refresh/babel' : false
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].filter(Boolean);
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return { presets, plugins };
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};
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