crypto.randomUUID() has replaced the uuid npm package since 2021

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The widely used uuid npm package, downloaded millions of times primarily for its v4 UUID generation, has a built-in native alternative that has existed since 2021. The Web Crypto API's crypto.randomUUID() method is globally available across browsers, Node.js, Deno, Bun, and Cloudflare Workers without any import or configuration. It produces the same v4 UUID format using the same underlying cryptographically secure pseudorandom number generator as the npm package, offering no difference in security or output. Developers can replace uuid/v4 calls with a single line — const id = crypto.randomUUID() — and remove the dependency entirely from their projects. The native method does not support namespace-based v3 or v5 UUIDs, so the library remains necessary only for those specific use cases.

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