notquine.js

/*
Description:

Write a function 'notQuine' which returns a string containing every ASCII character that is NOT part of the source code of the function.

The outer 'function () { }' wrapper is included.

A function containing all of the characters is not a valid solution.

You may not modify Function.prototype.toString, notQuine.toString, String.indexOf, or String.fromCharCode.

Only return characters from ASCII code 32 to 254. Order does not matter.
*/

var notQuine = function(){
  var ascii = function () {
    var result = [];
    for (var i = 32; i < 255; i++) {
      result.push(i);
    }
    return result;
  };

  var code = notQuine
    .toString()
    .split("")
    .map(function (c) {
      return c.charCodeAt(0);
    });

  return ascii()
    .filter(function (c) { return code.indexOf(c) === -1; })
    .map(function (c) { return String.fromCharCode(c); })
    .join("");
};