GUID V4 - Random-Based Identifier (Recommended)
GUID v4 is the most widely used random-based identifier. Learn about its structure, collision probability, advantages and why it is recommended for general-purpose applications.
How to Generate UUIDs in TypeScript
Generate UUIDs in TypeScript with native runtime support for v4 and a package-based approach for v7 when you need sortable identifiers.
Recommendation: keep UUID generation tied to your runtime capabilities. Use native v4 where possible, and standardize on one package for v7 across your codebase.
How to generate UUID v4 in TypeScript
const id: string = crypto.randomUUID();
console.log(id);How to generate UUID v7 in TypeScript
// npm install uuid
import { v7 as uuidv7 } from 'uuid';
const id: string = uuidv7();
console.log(id);Native support notes
- TypeScript adds types, not new UUID generation primitives.
- UUID v4 support depends on browser or Node runtime support.
- UUID v7 is typically handled through the
uuidpackage.
Practical notes
- Keep server and browser UUID generation aligned if code is shared across environments.
- Prefer one package import style across ESM and CommonJS boundaries.
- Compare v4 vs v7 before locking in a storage strategy.
Frequently Asked Questions
TypeScript does not add new UUID APIs. It uses the runtime's JavaScript capabilities and libraries.
Use runtime crypto for v4 when supported. Use the
uuid package when you need v7 or a consistent cross-runtime API.Learn more
These articles expand on related concepts, formats and practical considerations.