zone-external-lib.ts

import 'zone.js';
import * as library from 'external-library';
 
const zone = Zone.current.fork({
  name: 'myAwesomeZone',
  onInvokeTask: (delegate, current, target, task, applyThis, applyArgs) => {
    console.log('Preparing to run some "then" callback...');
    return delegate.invokeTask(target, task, applyThis, applyArgs);
  },
  onInvoke: (delegate, current, target, callback, applyThis, applyArgs, source) => {
    console.log('Callback will be run: ', callback);
    console.log(`Let's do something before the callback is invoked...`);
    doMyAmazingStuffHere();
    return delegate.invoke(target, callback, applyThis, applyArgs, source);
  }
});
 
zone.run(() => {
  library.someAwesomeFunction();
});