File size: 1,704 Bytes
1e92f2d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | // @babel/preset-env modules option. `false` for ECMAScript modules.
function modulesOption( opts ) {
if ( opts && opts.modules !== undefined ) {
return opts.modules;
}
if ( typeof process.env.MODULES !== 'undefined' ) {
return process.env.MODULES === 'esm' ? false : process.env.MODULES;
}
return false; // Default
}
module.exports = ( api, opts ) => ( {
presets: [
[
require.resolve( '@babel/preset-env' ),
{
corejs: opts.corejs ? opts.corejs : 3.6,
debug: opts.debug ? opts.debug : false,
bugfixes: opts.bugfixes ? opts.bugfixes : false,
modules: modulesOption( opts ),
useBuiltIns: opts.useBuiltIns ? opts.useBuiltIns : 'entry',
// Exclude transforms that make all code slower, see https://github.com/facebook/create-react-app/pull/5278
exclude: [ 'transform-typeof-symbol' ],
},
],
[
require.resolve( '@babel/preset-react' ),
{
runtime: 'automatic',
importSource: opts.importSource ?? process.env.IMPORT_SOURCE,
},
],
[ require.resolve( '@babel/preset-typescript' ), { allowDeclareFields: true } ],
],
plugins: [
require.resolve( '@babel/plugin-proposal-class-properties' ),
[
require.resolve( '@babel/plugin-transform-runtime' ),
{
corejs: false, // we polyfill so we don't need core-js
helpers: true,
regenerator: false,
useESModules: false,
// Needed so that helpers aren't duplicated.
// This will need to be kept up to date while https://github.com/babel/babel/issues/10261 is unresolved.
version: require( '@babel/helpers/package.json' ).version,
},
],
require.resolve( '@automattic/babel-plugin-preserve-i18n' ),
require.resolve( '@emotion/babel-plugin' ),
],
} );
|