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Trailing commas

尾逗号

https://caniuse.com/?search=trailing commas

ESlint

{
    "comma-dangle": ["error", "always"],
    // or
    "comma-dangle": ["error", {
        "arrays": "always",
        "objects": "always",
        "imports": "always",
        "exports": "always",
        "functions": "always"
    }]
}

https://eslint.org/docs/rules/comma-dangle

https://cn.eslint.org/docs/rules/comma-dangle

JSON, however, disallows trailing commas.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Trailing_commas

refs

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