模块化

// common.js
function sayHello(name) {
console.log(Hello ${name} !)
}
function sayGoodbye(name) {
console.log(Goodbye ${name} !)
}

module.exports.sayHello = sayHello
exports.sayGoodbye = sayGoodbye

https://developers.weixin.qq.com/miniprogram/dev/framework/app-service/module.html