react-native/local-cli/core/windows/findPackageClassName.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 fs = require('fs');
const glob = require('glob');
const path = require('path');
/**
* Gets package's class name (class that implements IReactPackage)
* by searching for its declaration in all C# files present in the folder
*
* @param {String} folder Folder to find C# files
*/
module.exports = function getPackageClassName(folder) {
const files = glob.sync('**/*.cs', { cwd: folder });
const packages = files
.map(filePath => fs.readFileSync(path.join(folder, filePath), 'utf8'))
.map(file => file.match(/class (.*) : IReactPackage/))
.filter(match => match);
return packages.length ? packages[0][1] : null;
};