Question 1

How do I generate UUIDs in a browser with @lukeed/uuid?

Accepted Answer

Install the package and import the v4 function; for non-secure UUIDs, use '@lukeed/uuid', and for secure ones, use '@lukeed/uuid/secure'. It works with any bundler like webpack or Rollup, and the UMD build is available for direct script tags.

Question 2

Is @lukeed/uuid secure enough for production use?

Accepted Answer

Yes, if you use the secure mode ('@lukeed/uuid/secure'), it relies on cryptographically strong random number generation. However, the default mode uses Math.random and is not secure, so choose based on your security requirements.

Question 3

What's the performance difference between @lukeed/uuid and the uuid package?

Accepted Answer

@lukeed/uuid is significantly faster; benchmarks show it achieves over 6 million ops/sec in Node.js compared to around 1.2 million for uuid/v4, making it better for high-throughput applications. However, uuid supports more UUID versions.

Question 4

Does @lukeed/uuid support UUID validation or parsing?

Accepted Answer

No, this library focuses solely on UUID v4 generation. For validation, parsing, or working with other UUID versions, you'll need additional tools or libraries like uuid.

Question 5

How to switch between secure and non-secure modes in my code?

Accepted Answer

Import from different paths: use import { v4 } from '@lukeed/uuid' for non-secure (fast) mode, or import { v4 } from '@lukeed/uuid/secure' for cryptographically secure UUIDs. Both provide the same API but differ in underlying randomness.

Question 6

What browsers are compatible with @lukeed/uuid secure mode?

Accepted Answer

The secure mode works in any browser supporting crypto.getRandomValues(), which includes all modern browsers (Chrome, Firefox, Safari, Edge). For older browsers, the non-secure mode is a fallback, but it's not cryptographically strong.

@lukeed/uuid

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