react-native/jestSupport/preprocessor.js

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/**
* 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';
const babel = require('babel-core');
const babelRegisterOnly = require('../packager/babelRegisterOnly');
const createCacheKeyFunction = require('fbjs-scripts/jest/createCacheKeyFunction');
const path = require('path');
const transformer = require('../packager/transformer.js');
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const nodeFiles = RegExp([
'/local-cli/',
'/packager/(?!react-packager/src/Resolver/polyfills/)',
].join('|'));
const nodeOptions = babelRegisterOnly.config([nodeFiles]);
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module.exports = {
process(src, file) {
// Don't transform node_modules, except react-tools which includes the
// untransformed copy of React
if (file.match(/node_modules\/(?!react-tools\/)/)) {
return src;
} else if (nodeFiles.test(file)) { // node specific transforms only
return babel.transform(
src, Object.assign({filename: file}, nodeOptions)).code;
}
return transformer.transform(src, file, {inlineRequires: true}).code;
},
getCacheKey: createCacheKeyFunction([
__filename,
path.join(__dirname, '../packager/transformer.js'),
require.resolve('babel-core/package.json'),
]),
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};