/*!
 * pad-left <https://github.com/jonschlinkert/pad-left>
 *
 * Copyright (c) 2014-2015, Jon Schlinkert.
 * Licensed under the MIT license.
 */

'use strict';

var repeat = require('repeat-string');

module.exports = function padLeft(str, num, ch) {
  str = str.toString();

  if (typeof num === 'undefined') {
    return str;
  }

  if (ch === 0) {
    ch = '0';
  } else if (ch) {
    ch = ch.toString();
  } else {
    ch = ' ';
  }

  return repeat(ch, num - str.length) + str;
};