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Biome vs Prettier for TypeScript

Biome gives TypeScript projects a fast formatter path. Prettier remains a safe choice when teams depend on its ecosystem compatibility.

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HappyFormatter tools process pasted snippets client-side for quick, privacy-first developer workflows.

No upload

HappyFormatter tools process pasted snippets client-side for quick, privacy-first developer workflows.

No account

HappyFormatter tools process pasted snippets client-side for quick, privacy-first developer workflows.

Key differences

Biome is performance-oriented.

Prettier is convention-heavy and widely adopted.

Neither validates TypeScript types.

Messy TypeScript

Formatting clarifies type annotations and object literals.

type User={id:number;name:string}
const user:User={id:1,name:'Ada'}

Output

type User = { id: number; name: string };
const user: User = { id: 1, name: "Ada" };

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