重写js文件

'use strict';
/**
 * 动态设置环境host.js的地址
 * hostUrl => host.js路径
 * process.env.npm_config_argv => 返回 {"remain":[],"cooked":["run","dev"],"original":["run","dev"]} | {"remain":[],"cooked":["run","build"],"original":["run","build"]}
 * runType => 执行哪个环境
 */
const fs = require('fs');
const path = require('path');
let hostUrl = path.resolve(__dirname, './../request/host.js');
let configArgv = process.env.npm_config_argv;
let runType = JSON.parse(configArgv).cooked[1];

!(function() {
	let obj = {};
	console.log('runType执行');
	if (runType === 'dev') {
		console.log('执行线上环境');
		obj = {
			ex: 'http://xxx.xx.148.81',
			hd: 'http://xxx.xx.148.81',
		};
	}
	if (runType === 'build') {
		console.log('执行开发环境');
		obj = {
			ex: 'https://xxx.io',
			hd: 'https://xxx.io',
		};
	}
	let routerContent = `export default ${JSON.stringify(obj)}`;
	fs.writeFile(hostUrl, routerContent, (err, data) => {
		console.log('setHost设置成功');
	});
})();