transformers/engine.io/library.js
function decode(str) {
  var decoded = 0;

  for (i = 0; i < str.length; i++) {
    decoded = decoded * length + map[str.charAt(i)];
  }

  return decoded;
}
function decode(str) {
  var decoded = 0;

  for (i = 0; i < str.length; i++) {
    decoded = decoded * length + map[str.charAt(i)];
  }

  return decoded;
}
function decode ( str ) { var decoded = 0 ; for ( i = 0 ; i < str . length ; i ++ ) { decoded = decoded * length + map [ str . charAt ( i ) ] ; } return decoded ; }
Return the integer value specified by the given string.

@param {String} str The string to convert.
@returns {Number} The integer value represented by the string.
@api public
Return the integer value specified by the given string .