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babel.config.js
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babel.config.js
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/* eslint-disable import/no-extraneous-dependencies */
const reactPreset = require('@babel/preset-react').default;
const typescriptPreset = require('@babel/preset-typescript').default;
const envPreset = require('@babel/preset-env').default;
const classPropertiesPlugin = require('@babel/plugin-proposal-class-properties')
.default;
const objectSpreadTransformation = require('@babel/plugin-proposal-object-rest-spread')
.default;
const dynamicImportSyntaxPlugin = require('@babel/plugin-syntax-dynamic-import')
.default;
const runtimeTransformPlugin = require('@babel/plugin-transform-runtime')
.default;
const reactHotLoaderPlugin = require('react-hot-loader/babel');
const dynamicImportForNodePlugin = require('babel-plugin-dynamic-import-node');
module.exports = api => {
api.cache(() => process.env.NODE_ENV);
const isDev = process.env.NODE_ENV === 'development';
const isTest = process.env.NODE_ENV === 'test';
const isProd = process.env.NODE_ENV === 'production';
return {
presets: [
!isDev && [
envPreset,
{
modules: isTest ? 'commonjs' : false,
targets: {
browsers: ['>0.25%'],
},
},
],
[reactPreset, { useBuiltIns: true, development: !isProd }],
typescriptPreset,
].filter(Boolean),
plugins: [
isDev && reactHotLoaderPlugin,
[classPropertiesPlugin, { loose: true }],
[objectSpreadTransformation, { useBuiltIns: true }],
isTest ? dynamicImportForNodePlugin : dynamicImportSyntaxPlugin,
isProd && [
runtimeTransformPlugin,
{ useESModules: true, regenerator: false, corejs: false },
],
].filter(Boolean),
};
};