function fromObservableLight(observable) {
        return (listener, thisArgs, disposables) => {
            let count = 0;
            let didChange = false;
            const observer = {
                beginUpdate() {
                    count++;
                },
                endUpdate() {
                    count--;
                    if (count === 0) {
                        observable.reportChanges();
                        if (didChange) {
                            didChange = false;
                            listener.call(thisArgs);
                        }
                    }
                },
                handlePossibleChange() {
                    // noop
                },
                handleChange() {
                    didChange = true;
                }
            };
            observable.addObserver(observer);
            observable.reportChanges();
            const disposable = {
                dispose() {
                    observable.removeObserver(observer);
                }
            };
            if (disposables instanceof DisposableStore) {
                disposables.add(disposable);
            }
            else if (Array.isArray(disposables)) {
                disposables.push(disposable);
            }
            return disposable;
        };
    }
Each listener is attached to the observable directly.