Function byteLength

docs/app/js/sanddance-app.js:113119–113151

(string, encoding)

    return buffer;
};
function byteLength(string, encoding) {
    if (Buffer.isBuffer(string)) return string.length;
    if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) return string.byteLength;
    if (typeof string !== "string") throw new TypeError('The "string" argument must be one of type string, Buffer, or ArrayBuffer. Received type ' + typeof string);
    var len = string.length;
    var mustMatch = arguments.length > 2 && arguments[2] === true;
    if (!mustMatch && len === 0) return 0;
    // Use a for loop to avoid recursion
    var loweredCase = false;
    for(;;)switch(encoding){
        case "ascii":
        case "latin1":
        case "binary":
            return len;
        case "utf8":
        case "utf-8":
            return utf8ToBytes(string).length;
        case "ucs2":
        case "ucs-2":
        case "utf16le":
        case "utf-16le":
            return len * 2;
        case "hex":
            return len >>> 1;
        case "base64":
            return base64ToBytes(string).length;
        default:
            if (loweredCase) return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
            ;
            encoding = ("" + encoding).toLowerCase();
            loweredCase = true;
    }
}
Buffer.byteLength = byteLength;
function slowToString(encoding, start, end) {
    var loweredCase = false;