Function nullThrows

src/xregexp.js:347–354

* Returns the object, or throws an error if it is `null` or `undefined`. This is used to follow * the ES5 abstract operation `ToObject`. * * @private * @param {*} value Object to check and return. * @returns {*} The provided object.

(value)

 * @returns {*} The provided object.
 */
function nullThrows(value) {
    // null or undefined
    if (value == null) {
        throw new TypeError('Cannot convert null or undefined to object');
    }

    return value;
}

/**
 * Adds leading zeros if shorter than four characters. Used for fixed-length hexadecimal values.