Typescript is a superset on top of Javascript, extending it by adding a type system.
Type checking occurs within the IDE (if configured) and at compile time.
Typescript must be compiled to Javascript to be used in a browser.
Configuration
The typescript compiler’s configuration is found in tsconfig.json at the project root.
By default, the compiler will print errors, but not prevent compilation if they are encountered. This is helpful while migrating existing JS code to TS, as it allows you to incrementally add type assignments.
To change this behaviour, set noEmitOnError: true within tsconfig.json.
Use with Vue
Vue ships with official type declarations. Vue3 has been re-written from the ground up entirely in Typescript.
Use with Vuetify
Vuetify is written in TypeScript and has type definitions compatible with Typescript 3.9.
