metro/babelRegisterOnly.js

39 lines
998 B
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
'use strict';
Array.prototype.values || require('core-js/fn/array/values');
Object.entries || require('core-js/fn/object/entries');
Object.values || require('core-js/fn/object/values');
var _only = [];
function registerOnly(onlyList) {
require('babel-register')(config(onlyList));
}
function config(onlyList) {
_only = _only.concat(onlyList);
return {
presets: ['es2015-node'],
plugins: [
'transform-flow-strip-types',
'syntax-trailing-function-commas',
'transform-object-rest-spread',
],
only: _only,
retainLines: true,
sourceMaps: 'inline',
babelrc: false,
};
}
module.exports = exports = registerOnly;
exports.config = config;