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Taro1.3.x在微信小程序开启了es6转es5后,async/await功能异常 #5275

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tourze opened this issue Jan 8, 2020 · 5 comments
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@tourze
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tourze commented Jan 8, 2020

问题描述

这个问题在issue有人提过的了,基本解决方案都是直接关闭es6转es5。实际有些场景是不能关闭这个开关(如跨团队协作开发)

解决这个问题有个更便捷的方法,在用到async/await语法的地方顶部补充代码:

// 兼容小程序es6转es5报错的问题
// eslint-disable-next-line import/no-commonjs,no-unused-vars
const regeneratorRuntime = require('regenerator-runtime/runtime');

然后在编译成小程序代码就会变成类似

var regeneratorRuntime = require("../../../regenerator-runtime/runtime.js");

同时开发者工具的es6转es5功能也正常了。

我看了tarojs/async-await那个包,在小程序下是将regeneratorRuntime挂到global了。这种做法相对比较优雅,但是兼容性相对会差点。可以考虑像我上面写的那样,在js文件里面直接requre runtime。

复现步骤

  1. 新建个taro项目
  2. 使用async/await实现业务
  3. 使用微信小程序开发工具来查看,默认不开启es6转es5,选择开启后就会报错。regeneratorRuntime is not defind.

期望行为

转译后的代码,兼容性更好

系统信息

👽 Taro v1.3.33


  Taro CLI 1.3.33 environment info:
    System:
      OS: macOS 10.15.2
      Shell: 5.7.1 - /bin/zsh
    Binaries:
      Node: 12.9.1 - /usr/local/bin/node
      Yarn: 1.17.3 - /usr/local/bin/yarn
      npm: 6.10.3 - /usr/local/bin/npm
    npmPackages:
      @tarojs/async-await: ^1.3.33 => 1.3.33 
      @tarojs/cli: ^1.3.33 => 1.3.33 
      @tarojs/components: ^1.3.33 => 1.3.33 
      @tarojs/components-qa: ^1.3.33 => 1.3.33 
      @tarojs/components-rn: ^1.3.33 => 1.3.33 
      @tarojs/plugin-babel: ^1.3.33 => 1.3.33 
      @tarojs/plugin-csso: ^1.3.33 => 1.3.33 
      @tarojs/plugin-sass: ^1.3.33 => 1.3.33 
      @tarojs/plugin-uglifyjs: ^1.3.33 => 1.3.33 
      @tarojs/redux: ^1.3.33 => 1.3.33 
      @tarojs/redux-h5: ^1.3.33 => 1.3.33 
      @tarojs/rn-runner: ^1.3.33 => 1.3.33 
      @tarojs/router: ^1.3.33 => 1.3.33 
      @tarojs/taro: ^1.3.33 => 1.3.33 
      @tarojs/taro-alipay: ^1.3.33 => 1.3.33 
      @tarojs/taro-h5: ^1.3.33 => 1.3.33 
      @tarojs/taro-qq: ^1.3.33 => 1.3.33 
      @tarojs/taro-quickapp: ^1.3.33 => 1.3.33 
      @tarojs/taro-redux-rn: ^1.3.33 => 1.3.33 
      @tarojs/taro-rn: ^1.3.33 => 1.3.33 
      @tarojs/taro-router-rn: ^1.3.33 => 1.3.33 
      @tarojs/taro-swan: ^1.3.33 => 1.3.33 
      @tarojs/taro-tt: ^1.3.33 => 1.3.33 
      @tarojs/taro-weapp: ^1.3.33 => 1.3.33 
      @tarojs/webpack-runner: ^1.3.33 => 1.3.33 
      eslint-config-taro: ^1.3.33 => 1.3.33 
      eslint-plugin-taro: ^1.3.33 => 1.3.33 
      react: ^16.9.0 => 16.12.0 
      react-native: 0.61.4 => 0.61.4 
    npmGlobalPackages:
      typescript: 2.4.2
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taro-bot bot commented Jan 8, 2020

CC @Chen-jj

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taro-bot bot commented Jan 8, 2020

欢迎提交 Issue~

如果你提交的是 bug 报告,请务必遵循 Issue 模板的规范,尽量用简洁的语言描述你的问题,最好能提供一个稳定简单的复现。🙏🙏🙏

如果你的信息提供过于模糊或不足,或者已经其他 issue 已经存在相关内容,你的 issue 有可能会被关闭。

Good luck and happy coding~

@Chen-jj Chen-jj added answered question Further information is requested labels Jan 9, 2020
@Garfield550
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CLI 编译后会给你转译 ES5 的啊,另外就是突然改变引入逻辑可能会导致其他人的项目出现 Break。

@taro-bot taro-bot bot added the to be closed label Jan 9, 2020
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taro-bot bot commented Jan 9, 2020

Hello~

您的问题楼上已经有了确切的回答,如果没有更多的问题这个 issue 将在 15 天后被自动关闭。

如果您在这 15 天中更新更多信息自动关闭的流程会自动取消,如有其他问题也可以发起新的 Issue。

Good luck and happy coding~

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