Using a Javascript Function from Typescript
//notif.js
let notify = function(message) { alert(message);}//test.ts
declare function notify(message: string): any;if(notify != undefined) notify("your message");Make sure notif.js is loaded first.
You need to tell typescript that this function exists on window.external in order to use it. So :
interface External{ notify: Function;}if (window.external.notify != undefined) window.external.notify("your message");