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