Using Scheduler with TypeScript

You can use the dhtmlxScheduler library together with TypeScript. All the TypeScript definitions are stored in the dhtmlxscheduler.d.ts file.

By using Scheduler with TypeScript you will get useful suggestions while working in any modern IDE. Besides, it guarantees the stability of code, since the used types will be constantly checked.

Declaring global variables

dhtmlxscheduler.js declares two global variables you may need: window.scheduler and window.Scheduler:

The scheduler variable contains the default instance of Scheduler.
Scheduler is declared in the Commercial (since October 6, 2021), Enterprise and Ultimate versions of the component only and provides the factory method for creating new scheduler instances. Check the Creating Multiple Schedulers on a Page article for details.

Since dhtmlxscheduler.js is a regular browser JS library, it can't export TypeScript modules explicitly. Thus, "scheduler" (or "Scheduler") has to be declared in TypeScript manually, so that you could refer to them without a compiler error. There are two possible ways for this:

both of these variables are declared in @types/dhtmlxscheduler, and will be available once you import them.
if you don't want to use the type definitions, you can simply declare a variable manually in your code:

declare let scheduler: any;

Thus you won't have any error during compilation, and at the runtime your code will refer to the global Scheduler instance, making everything work as expected.