What is TypeScript

TypeScript is a superset of JavaScript that adds a static type system and compiles to run in JavaScript.

Type Annotation

Specify types for variables, function parameters, and return values to detect errors in advance.

Interface and Type Aliases

Interface defines object structure, type defines type alias.

generic

Write reusable universal components that support multiple types.

Advanced type

Joint type, cross type, type guard, type assertion.

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