var fs = require('fs'); function main (){ var args = process.argv.splice(2) if (args.length !== 1) { return console.log('参数请填写环境变量'); } let env = args[0]; if(args[0] == 'stable') { env = 'production'; } let configObject = { env: env }; let result = JSON.stringify(configObject); fs.writeFileSync(__dirname + '/config.json', result, 'utf8'); } main();