Angular External js library calling Document.Ready

https://stackoverflow.com/questions/51094841/angular-external-js-library-calling-document-ready

Step 1

Check if the external library is available on npm. If so you may be able to import the desired function rather than altering a vendored file.

For example, it may provide an API such that:
YourTsComponent.ts

const CallMe = require('library').CallMe
// or
import { CallMe } from 'library'

// on route change
CallMe()

If something like that is available, great, otherwise...

Step 2

Confirm your theory with a global (attach CallMe to window temporarily). If your theory is correct, you should be able to get the desired behavior by calling this global variable on route change.

Tester.js

(function($) {
  "use strict";

  $(document).ready(function() {
    CallMe();
  });

  function CallMe() {
    console.log('HEY I GOT CALLED');
  }

  // TODO - remove (test only)
  window._CallMe = CallMe
})(jQuery);

YourTsComponent.ts

// on route change
window._CallMe()

If that doesn't work, you must reevaluate your theory.

but if it does ...

Step 3

Convert the vendored library to a module that can be consumed by your app. Your mileage may vary based on what (if any) module system you are using. For example, if you are using require.js:

Tester.js

(function(factory) {
  if (typeof define === 'function' && define.amd) {
    // AMD
    define(['jquery'], factory);
  } else if (typeof exports === 'object') {
    // CommonJS
    factory(require('jquery'));
  } else {
    // Browser globals
    factory(jQuery);
  }
}(function($) {
  "use strict";

  function CallMe() {
    console.log('HEY I GOT CALLED');
  }

  $(document).ready(function() {
    CallMe();
  });

  return CallMe
}));

YourTsComponent.ts

const CallMe = require('/path/to/tester.js')

// on route change
CallMe()

If you're not keen on re-writing a vendored library

You may consider overriding .ready's default behavior so that it may be retriggered. There Are a few answers here if you want to go this route, but be warned, overriding default jQuery behavior is probably much more error prone than editing a single vendored file.