lodash/endsWith.js

import baseClamp from './_baseClamp';
import toInteger from './toInteger';
import toString from './toString';

/**
 * Checks if `string` ends with the given target string.
 *
 * @static
 * @memberOf _
 * @category String
 * @param {string} [string=''] The string to search.
 * @param {string} [target] The string to search for.
 * @param {number} [position=string.length] The position to search from.
 * @returns {boolean} Returns `true` if `string` ends with `target`, else `false`.
 * @example
 *
 * _.endsWith('abc', 'c');
 * // => true
 *
 * _.endsWith('abc', 'b');
 * // => false
 *
 * _.endsWith('abc', 'b', 2);
 * // => true
 */
function endsWith(string, target, position) {
  string = toString(string);
  target = typeof target == 'string' ? target : (target + '');

  var length = string.length;
  position = position === undefined
    ? length
    : baseClamp(toInteger(position), 0, length);

  position -= target.length;
  return position >= 0 && string.indexOf(target, position) == position;
}

export default endsWith;