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babel.config.js
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babel.config.js
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module.exports = function babelConfig(api) {
const babelEnv = api.env();
api.cache(true);
const presets = [
[
'@babel/preset-env',
{
targets: {
esmodules: true,
},
corejs: '3.0.0',
useBuiltIns: 'usage',
},
],
'@babel/preset-react',
];
const plugins = [
'@babel/transform-react-constant-elements',
'transform-react-remove-prop-types',
'transform-react-pure-class-to-function',
'@babel/plugin-transform-runtime',
'react-hot-loader/babel',
// Stage 2 https://github.com/babel/babel/tree/master/packages/babel-preset-stage-2
['@babel/plugin-proposal-decorators', { legacy: true }],
'@babel/plugin-proposal-function-sent',
'@babel/plugin-proposal-export-namespace-from',
'@babel/plugin-proposal-numeric-separator',
'@babel/plugin-proposal-throw-expressions',
// Stage 3
'@babel/plugin-syntax-dynamic-import',
'@babel/plugin-syntax-import-meta',
['@babel/plugin-proposal-class-properties', { loose: true }],
'@babel/plugin-proposal-json-strings',
];
if (babelEnv === 'production') {
plugins.push(['@babel/plugin-transform-react-inline-elements']);
}
return {
presets,
plugins,
};
};