指定解析器选项

ESLint 允许你指定你想要支持的 JavaScript 语言选项。默认情况下,ESLint 需要 ECMAScript 5 语法。您可以使用解析器选项覆盖该设置以启用对其他 ECMAScript 版本以及 JSX 的支持。

ESLint allows you to specify the JavaScript language options you want to support. By default, ESLint expects ECMAScript 5 syntax. You can override that setting to enable support for other ECMAScript versions as well as JSX by using parser options.

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  • ecmaVersion - 设置为 3、5(默认)、6、7、8、9、10、11、12、13 或 14 以指定要使用的 ECMAScript 语法版本。还可以设置为2015(同6)、2016(同7)、2017(同8)、2018(同9)、2019(同10)、2020(同11)、2021(同as 12)、2022(与 13 相同)或 2023(与 14 相同)使用基于年份的命名。您还可以将 "latest" 设置为使用最新支持的版本。

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  • sourceType - 如果您的代码在 ECMAScript 模块中,则设置为 "script"(默认)或 "module"。

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  • allowReserved - 允许使用保留字作为标识符(如果 ecmaVersion 为 3)。

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  • ecmaFeatures - 一个对象,指示您想使用哪些附加语言功能:
    • globalReturn - 允许全局范围内的 return 语句

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    • impliedStrict - 启用全局 严格模式(如果 ecmaVersion 为 5 或更大)

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    • jsx - 启用 JSX

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{
    "parserOptions": {
        "ecmaVersion": "latest",
        "sourceType": "module",
        "ecmaFeatures": {
            "jsx": true
        }
    },
    "rules": {
        "semi": "error"
    }
}

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