TypeScript 7 Foundation

The TypeScript 7 Foundation exam assesses your entry-level knowledge of TypeScript, the strongly-typed superset of JavaScript used across the modern web ecosystem — now rebuilt as a native Go binary that is roughly 10x faster than previous versions.

Topics covered include:

• Basic types and type annotations
• Interfaces, type aliases, and object shapes
• Classes, enums, unions, and literal types
• Functions and signatures
• Generics fundamentals and basic narrowing
• What TypeScript 7 is: the Go native port (Strada vs Corsa)
• New tsconfig defaults (strict, module esnext, types, rootDir)
• Removed legacy options (ES5, AMD/UMD, baseUrl)
• Tooling: tsc, the LSP language server, watch mode

Passing this exam demonstrates foundational competency in modern TypeScript and awareness of the TypeScript 7 toolchain.