zone.addWait()

Adds a wait to the Zone. Adding a wait will delay the Zone's Promise from resolving (the promise created by calling zone.run) by incrementing its internal counter.

Usually a corresponding removeWait will be called to decrement the counter.

new Zone().run( function() {

    const zone = Zone.current;

    zone.addWait(); // counter at 1
    zone.removeWait(); // counter at 0, Promise resolves

} ).then( function() {

} );