off()

in packages/shared/src/event-emitter.ts [62:89]

• 28 lines of code
• 15 McCabe index (conditional complexity)

  off(events, callback?, context?) {
    let event; let calls; let node; let tail; let cb; let
ctx;
    if (!(calls = this.callbacks)) {
      return this;
    }
    if (!(events || callback || context)) {
      delete this.callbacks;
      return this;
    }
    events = events ? events.split(Events.eventSplitter) : Object.keys(calls);
    while ((event = events.shift())) {
      node = calls[event];
      delete calls[event];
      if (!node || !(callback || context)) {
        continue;
      }
      tail = node.tail;
      while ((node = node.next) !== tail) {
        cb = node.callback;
        ctx = node.context;
        if ((callback && cb !== callback) || (context && ctx !== context)) {
          this.on(event, cb, ctx);
        }
      }
    }
    return this;
  }