text: #!/usr/bin/env node
  const program = require('commander');
  const chalk = require('chalk');
  const command = require('../command');
  
  program.version(require('../package').version).usage(chalk.green('<command> [options]'));  //定义版本、指令样式
  program.command('server').description(chalk.green('run service')).action(function () { command.server(program.args); }); //运行WEB服务
  program.command('build').description(chalk.green('build Web')).action(function () { command.build(program.args); }); //打包WEB应用
  program.command('lint').description(chalk.green('lint style')).action(function () { command.lint(program.args); }); //格式化样式
  
  program.parse(process.argv); //解析参数
  
  //未带参数，直接显示帮助信息
  if(!program.args.length) {
      return program.help();
  }