davidbau/seedrandom

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

2132 stars · 168 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A small JavaScript library providing seeded pseudorandom number generators, including an ARC4-based PRNG and fast alternatives like Alea. It can replace Math.random with a deterministic generator or create local seeded PRNG instances, usable as a script, Node.js module, or AMD module.

Use cases

• generate reproducible random numbers in JavaScript tests
• seed Math.random for deterministic simulations
• create predictable procedural generation in games
• shuffle data deterministically across runs
• add entropy to an explicit seed for better randomness
• use a fast Alea PRNG in performance-sensitive code

When to choose

• you need reproducible/deterministic randomness in JavaScript
• you want to derandomize code for testing
• you need a lightweight PRNG usable in browser or Node.js

When to avoid

• you need cryptographically secure randomness for security-sensitive purposes
• you need random numbers in a non-JavaScript environment

Facets

library · maturity maintenance

sdk developer-tools developer-tools programming-languages browser cross-platform prng seeded-random javascript deterministic alea arc4 algorithms nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="davidbau/seedrandom")