Note
This is one of 199 standalone projects, maintained as part of the @thi.ng/umbrella monorepo and anti-framework.
🚀 Please help me to work full-time on these projects by sponsoring me on GitHub. Thank you! ❤️
- About
- Status
- Support packages
- Related packages
- Installation
- Dependencies
- Usage examples
- API
- Authors
- License
Pseudo-random number generators w/ unified API, distributions, weighted choices, ID generation.
Important
In July 2024 this package was restructured and split-up to extract some features into smaller more focused packages:
This package provides the IRandom interface and various (mostly seedable)
pseudo-random number generator implementations, incl. IRandom wrappers for
Math.random() (or other external PRNGs) and window.crypto:
Partially ported from C implementations taken from c.thi.ng.
coin()/fairCoin()pickRandom()/pickRandomKey()randomBytes()/randomBytesFrom()randomID()weightedRandom()/weightedRandomKey()uniqueIndices()/uniqueValuesFrom()
STABLE - used in production
Search or submit any issues for this package
- @thi.ng/random-fxhash - @thi.ng/random compatible wrapper & utilities for fxhash's PRNG
- @thi.ng/ksuid - Configurable K-sortable unique IDs, ULIDs, binary & base-N encoded, 32/48/64bit time resolutions
yarn add @thi.ng/randomESM import:
import * as rnd from "@thi.ng/random";Browser ESM import:
<script type="module" src="https://esm.run/@thi.ng/random"></script>For Node.js REPL:
const rnd = await import("@thi.ng/random");Package sizes (brotli'd, pre-treeshake): ESM: 1.93 KB
Note: @thi.ng/api is in most cases a type-only import (not used at runtime)
18 projects in this repo's /examples directory are using this package:
| Screenshot | Description | Live demo | Source |
|---|---|---|---|
 |
Self-modifying, animated typographic grid with emergent complex patterns | Demo | Source |
 |
Probabilistic color theme generator | Demo | Source |
 |
Interactive inverse FFT toy synth | Demo | Source |
 |
2D Bezier curve-guided particle system | Demo | Source |
 |
Basic hiccup-based canvas drawing | Demo | Source |
 |
Barnsley fern IFS fractal renderer | Demo | Source |
 |
k-means clustering visualization | Demo | Source |
 |
Randomized space-filling, nested grid layout generator | Demo | Source |
 |
Randomized 4-point 2D color gradient image generator | Demo | Source |
 |
Interactive pixel sorting tool using thi.ng/color & thi.ng/pixel | Demo | Source |
 |
Animated, iterative polygon subdivisions & visualization | Demo | Source |
 |
Procedural stochastic text generation via custom DSL, parse grammar & AST transformation | Demo | Source |
 |
Basic usage of thi.ng/rdom keyed list component wrapper | Demo | Source |
 |
Generative audio synth offline renderer and WAV file export | Demo | Source |
 |
Evolutionary shader generation using genetic programming | Demo | Source |
 |
Responsive & reactively computed stacked column layout | Demo | Source |
 |
thi.ng/rdom & thi.ng/rstream based quiz to guess thi.ng package names | Demo | Source |
 |
Game of Life implemented as WebGL2 multi-pass shader pipeline | Demo | Source |
import { Smush32 } from "@thi.ng/random";
const rnd = new Smush32(0xdecafbad);
// the following methods are available for all generators
// next uint (0 .. 2^32-1)
rnd.int()
// 4022849029
// next float [0.0 .. 1.0)
rnd.float()
// 0.2698542904737066
// next normalized float (w/ opt scale)
// [-scale .. +scale)
rnd.norm(100)
// 57.70723665079737
// next float in given interval [min .. max)
rnd.minmax(10, 20)
// 15.295951807707537
rnd.minmaxInt(10, 20)If this project contributes to an academic publication, please cite it as:
@misc{thing-random,
title = "@thi.ng/random",
author = "Karsten Schmidt",
note = "https://thi.ng/random",
year = 2015
}© 2015 - 2024 Karsten Schmidt // Apache License 2.0