Pure Ts

// Interfaces can be extended interface Admin extends User permissions: string[];

// Unknown (Type-safe counterpart of 'any') let notSure: unknown = 4; notSure = "maybe a string instead"; // notSure.toFixed(); // Error: Object is of type 'unknown'.

Diagnosing pure TS requires a detailed assessment to confirm the absence of other disorders. This is vital because the overlap in behaviors—such as the "just right" phenomenon found in both tic disorders and OCD—can make differentiation challenging.

Start simple, keep strict on, and let the types guide your code.