qs-like/es/prefix.js

A tiny query string parsing and stringifying library

/*
 * qs-like.js v1.0.1
 * (c) 2018-2019 Jesse Feng
 * Released under the MIT License.
 */
function prefix (str, prefix) {
  prefix = prefix || '?';
  return str
    ? str.indexOf(prefix) === 0
      ? str
      : (prefix + str)
    : str;
}

export default prefix;