[Exposed=(Window,Worker)]
interface TextDecoder {
    // FIXME: 'optional TextDecoderOptions options = {}'
    constructor(optional DOMString label = "utf-8");

    // FIXME: [AllowShared] on the first parameter.
    // FIXME: 'optional TextDecodeOptions options = {}'
    USVString decode(optional BufferSource input);

    readonly attribute DOMString encoding;
    readonly attribute boolean fatal;
    readonly attribute boolean ignoreBOM;
};