Angry functions in JavaScript.

angrify.js

/**
 * A quick implementation of this idea in JavaScript.
 * https://www.reddit.com/r/shittyprogramming/comments/2sxbh9/program_with_all_obscure_c_features_ideas/cnu1qpm
 */

function angrify(fn) {
  return function() {
    try {
      fn.apply(this, arguments);
    } catch(e) {
      return e;
    }
  }
}

var angry = angrify(function() {
  throw 'Hello world!';
});

console.log(angry());