constructor(config) {
        super(config);

        this.byte_decoder = UNICODE_TO_BYTES;
        this.text_decoder = new TextDecoder("utf-8", {
            fatal: false,
            ignoreBOM: true,
        });

        this.end_of_word_suffix = null;
    }
Create a `ByteLevelDecoder` object.
@param {Object} config Configuration object.