共计 1534 个字符,预计需要花费 4 分钟才能阅读完成。
另外,这俩问题是我在 mobx 中应用 ES7 装璜器语法用到的,用一般的 ES6 语法是不会碰到这样的问题,嫌麻烦也能够不必装璜器语法,奈何我对这种看上去像 Spring 正文的语法垂涎已久。
bug1
Experimental support for decorators is a feature that is subject to change in a future release. Set the ‘experimentalDecorators’ option in your ‘tsconfig’ or ‘jsconfig’ to remove this warning.ts(1219)
问题出在 IDE 不意识这个语法 以 vscode 为例 须要在 setting 中搜“experimentalDecorators”而后勾选上
bug2
Parsing error: This experimental syntax requires enabling one of the following parser plugin(s): “decorators”, “decorators-legacy”. (22:4)eslint
问题出在我的项目自身不意识这个语法(以后这个语法还在试验阶段 babel 还没有正式公布),这个解决起来略微有点麻烦,翻了很久 stackoverflow 和 github issue,答复都是支支吾吾 遮遮掩掩,故作此篇,以飨前人。
step1:
npm i @babel/core @babel/plugin-proposal-decorators @babel/preset-env
step2:
我的项目根目录下创立.babelrc
{"presets": ["@babel/preset-env"],
"plugins": [["@babel/plugin-proposal-decorators", { "legacy": true}]]
}
step3:
我的项目根目录下创立 config-overrides.js
const path = require('path')
const {override, addDecoratorsLegacy} = require('customize-cra')
function resolve(dir) {return path.join(__dirname, dir) }
const customize = () => (config, env) => {config.resolve.alias['@'] = resolve('src')
if (env === 'production') {config.externals = { 'react': 'React', 'react-dom': 'ReactDOM'} }
return config
}; module.exports = override(addDecoratorsLegacy(), customize())
step4:npm i customize-cra react-app-rewired
step5:
批改 package.json
"scripts": {
"start": "react-app-rewired start",
"build": "react-app-rewired build",
"test": "react-app-rewired test",
"eject": "react-app-rewired eject"
},
而后重启服务器 再次 npm start
bug3
报错 Plugin “react” was conflicted between “package.json …
而后关上 package.json ctrl/command + s 就好啦
(最初这里 vscode 如果出问题,,重启服务器不论用,能够尝试换了一个 IDE 比方 webstorm)
happy hacking~