uniapp 配置vue.config.js

uniapp是一套基于Vue语法的框架，同样也支持Vue.config.js配置

一般常用的莫过于路径的名称，可以省去繁琐的../../ 之类的，不但麻烦而且也不好维护

const path = require('path');

function resolve (dir) {
  return path.join(__dirname, dir)
}

module.exports = {
  chainWebpack: (config) => {    
    config.resolve.alias
    .set('$css',resolve('/static/css'))
    .set('$common',resolve('/components'))
    .set('$api',resolve('/api'))
    .set('$page',resolve('/pages'))
    .set('$js',resolve('/static/js'));
  }
};