@technobuddha/library/isSurrogate/isSurrogate.mjs

A large library of useful functions

/**
 * Deterimine is a character is a surrogate
 *
 * @param input the character to test
 * @param __namedParameters see {@link Options}
 * @default high true
 * @defaultValue low true
 * @returns true if the specified character is a unicode surrogate
 */
export function isSurrogate(input, { high = true, low = true } = {}) {
    const cc = input.charCodeAt(0);
    return ((high && cc >= 0xD800 && cc <= 0xDBFF) || (low && cc >= 0xDC00 && cc <= 0xDFFF));
}
export default isSurrogate;