TypeScriptJavaScript
TypeScript Tips I Wish I Knew Earlier
Practical TypeScript patterns that will make your code safer, more readable, and easier to maintain.
N
by Nishara RamasingheTypeScript is so much more than just types. Here are the patterns I use daily.
1. Use satisfies for type checking without widening
ts
const config = {
port: 3000,
host: "localhost",
} satisfies Record<string, string | number>;2. Discriminated Unions
ts
type Result<T> =
| { success: true; data: T }
| { success: false; error: string };3. Template Literal Types
ts
type Route = `/${string}`;These patterns will level up your TypeScript game dramatically.
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