Getting Started with TypeScript
The first step from JavaScript to TypeScript — annotations, interfaces, and inference.
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The core value of TypeScript is catching errors at compile time, not discovering them in production.
Basic Annotations
const name: string = 'Astro';
const count: number = 42;
Learning Tips
- Enable
strictmode in a small project first - Pause when reaching for
any— can you narrow the type? - Read the error messages — they’re usually precise
Types aren’t overhead. They’re notes to your future self.
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