This project is part of the @thi.ng/umbrella monorepo.

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Arbitrary base-n encoding/decoding with presets for base32/36/58/62/64/85 and support for bigints.

BETA - possibly breaking changes forthcoming

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yarn add @thi.ng/base-n

// ES module
<script type="module" src="https://unpkg.com/@thi.ng/base-n?module" crossorigin></script>

// UMD
<script src="https://unpkg.com/@thi.ng/base-n/lib/index.umd.js" crossorigin></script>

Package sizes (gzipped, pre-treeshake): ESM: 626 bytes / CJS: 715 bytes / UMD: 800 bytes

None

Generated API docs

import { BASE85, defBase } from "@thi.ng/base-n";

BASE85.encodeBigInt(2n ** 128n - 1);
// '=r54lj&NUUO~Hi%c2ym0'

BASE85.decodeBigInt("=r54lj&NUUO~Hi%c2ym0").toString(16);
// 'ffffffffffffffffffffffffffffffff'

// define a custom base impl
const ternary = defBase("012");

ternary.encode(12345678)
// '212020020002100'

ternary.decode("212020020002100");
// 12345678

Karsten Schmidt

If this project contributes to an academic publication, please cite it as:

@misc{thing-base-n,
  title = "@thi.ng/base-n",
  author = "Karsten Schmidt",
  note = "https://thi.ng/base-n",
  year = 2017
}

© 2017 - 2021 Karsten Schmidt // Apache Software License 2.0