来自所有环境的ESLint全局变量是“ es6”，“ es2017”和“ es2020”的累积设置还是增量设置？

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ESLint具有所有环境中的全局设置：

{
    "env": {
        "es6": true,
        "es2017": true,
        "es2020": true
    }
}

Are the ESLint globals from all environments es6, es2017, and es2020 cumulative or incremental settings?

In other words, is it enough to enable es2020 support to benefit from es6 and es2017 as well, or it is mandatory to enable each JS language version support separately?