var fs = require('fs-extra'); var uuid = require('uuid'); var v = uuid.v1(); var output = [ 'var CHECKSUM = {', ' build: \'' + v + '\'', '};', 'module.exports = CHECKSUM;' ]; // Should output a json file, but webpack2 json-loader is broken // at the moment, so we're outputting a js file instead fs.writeFile('./src/checksum.js', output.join('\n'), { encoding: 'utf8', flag: 'w' }, function (error) { if (error) { throw error; } else { console.log('Building #' + v); } });