Function signal

static/js/codemirror/codemirror.js:4873–4878

(emitter, type /*, values...*/)

  }

  function signal(emitter, type /*, values...*/) {
    var arr = emitter._handlers && emitter._handlers[type];
    if (!arr) return;
    var args = Array.prototype.slice.call(arguments, 2);
    for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
  }

  var delayedCallbacks, delayedCallbackDepth = 0;
  function signalLater(emitter, type /*, values...*/) {