@kkdev92/vscode-ext-kit - v4.1.1
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    Type Alias SettingValueType

    SettingValueType:
        | "boolean"
        | "number"
        | "integer"
        | "string"
        | "array"
        | "object"
        | "null"

    A JSON Schema type name, as contributes.configuration accepts it.

    'null' is in the list because VS Code will not accept a null default without it: a setting that means "unset" has to declare ["string", "null"] or the settings editor rejects its own default.