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babel.config.js
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babel.config.js
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// @ts-check
/**
* @typedef {import('@babel/core')} babel
*/
const productionPlugins = [
['babel-plugin-react-remove-properties', { properties: ['data-mui-test'] }],
];
/** @type {babel.ConfigFunction} */
module.exports = function getBabelConfig(api) {
const useESModules = !api.env(['node']);
const presets = [
[
'@babel/preset-env',
{
bugfixes: true,
browserslistEnv: process.env.BABEL_ENV || process.env.NODE_ENV,
debug: process.env.MUI_BUILD_VERBOSE === 'true',
modules: useESModules ? false : 'commonjs',
},
],
[
'@babel/preset-react',
{
runtime: 'automatic',
},
],
'@babel/preset-typescript',
];
const outFileExtension = '.js';
/** @type {babel.PluginItem[]} */
const plugins = [
[
'@babel/plugin-transform-runtime',
{
useESModules,
// any package needs to declare 7.4.4 as a runtime dependency. default is ^7.0.0
version: '^7.4.4',
},
],
[
'babel-plugin-transform-react-remove-prop-types',
{
mode: 'unsafe-wrap',
},
],
];
if (process.env.NODE_ENV === 'production') {
plugins.push(...productionPlugins);
}
if (useESModules) {
plugins.push([
'@mui/internal-babel-plugin-resolve-imports',
{
// Don't replace the extension when we're using aliases.
// Essentially only replace in production builds.
outExtension: outFileExtension,
},
]);
}
return {
assumptions: {
noDocumentAll: true,
},
presets,
plugins,
ignore: [/@babel[\\|/]runtime/], // Fix a Windows issue.
overrides: [
{
exclude: /\.test\.(js|ts|tsx)$/,
plugins: ['@babel/plugin-transform-react-constant-elements'],
},
],
};
};