vite不支持optional Chaining(链判断运算符)和 nullishCoalescingOperator

链判断运算符特别好用,我就不多说了,搭建vite时,发现用了很多方法,都不能支持

方法一:@vitejs/plugin-react-refresh配置parserPlugins,不生效

import { defineConfig } from 'vite';
import reactRefresh from '@vitejs/plugin-react-refresh';

export default defineConfig({
    plugins: [
        reactRefresh({
            parserPlugins: ['optionalChaining', 'nullishCoalescingOperator']
        })
    ]
});

方法二:vite-babel-plugin加babel,不生效

import { defineConfig } from 'vite';
import reactRefresh from '@vitejs/plugin-react-refresh';
import babel from 'vite-babel-plugin';

export default defineConfig({
    plugins: [
        babel(),
        reactRefresh({
            parserPlugins: ['optionalChaining', 'nullishCoalescingOperator']
        })
    ]
});

方法三:@rollup/plugin-babel加babel,不生效

import { defineConfig } from 'vite';
import reactRefresh from '@vitejs/plugin-react-refresh';
import babel from '@rollup/plugin-babel';

export default defineConfig({
    plugins: [
        babel({
            babelHelpers: 'runtime',
            plugins: [
                '@babel/plugin-proposal-nullish-coalescing-operator',
                '@babel/plugin-proposal-optional-chaining'
            ]
        }),
        reactRefresh({
            parserPlugins: ['optionalChaining', 'nullishCoalescingOperator']
        })
    ]
});

方法四:改tsconfig.json,依然没效果

{
    "compilerOptions": {
        "target": "ES5",
        "lib": [
            "DOM",
            "DOM.Iterable",
            "ESNext",
            "ES2020",
            "ES2020.Symbol.WellKnown",
            "ES2020.String",
            "ES2020.SharedMemory",
            "ES2020.Promise",
            "ES2020.Intl",
            "ES2020.BigInt",
            "ES2021",
            "ES2021.Promise",
            "ES2021.String",
            "ES2021.WeakRef",
            "ES2019",
            "ES2019.Array",
            "ES2019.Object",
            "ES2019.String",
            "ES2019.Symbol",
            "ES2017",
            "ES2017.Object",
            "ES2015",
            "ES2015.Core"
        ],
        "allowJs": false,
        "skipLibCheck": false,
        "esModuleInterop": false,
        "allowSyntheticDefaultImports": true,
        "strict": true,
        "forceConsistentCasingInFileNames": true,
        "module": "ESNext",
        "moduleResolution": "Node",
        "resolveJsonModule": true,
        "isolatedModules": true,
        "noEmit": true,
        "jsx": "react"
    },
    "include": ["./src"]
}

试了这么多方法,都没用,我内心是崩溃的,没办法,还要到node_modules里找@vitejs/plugin-react-refresh,研究一下源码,我觉得我在parserPlugins里加optionalChaining和nullishCoalescingOperator,没有效果,我就重点看了这里,然后在源码里强制require这两个babel插件,再yarn add/npm install这两个插件,这次终于起作用了,高兴的我想吐血,希望尤大大看到这个,优化一下@vitejs/plugin-react-refresh

vite不支持optional Chaining(链判断运算符)和 nullishCoalescingOperator_第1张图片

经楼下小伙伴提醒发现最新版谷歌浏览器支持链判断运算符,那就啥也不用配置了

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