@oazmi/build-tools
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general deno build tool scripts which I practically use in all of my typescript repos
70 lines (69 loc) • 1.85 kB
JavaScript
// Copyright 2018-2025 the Deno authors. MIT license.
// Copyright (c) 2014 Jameson Little. MIT License.
// This module is browser compatible.
/**
* Utilities for
* {@link https://www.rfc-editor.org/rfc/rfc4648.html#section-6 | base32}
* encoding and decoding.
*
* Modified from {@link https://github.com/beatgammit/base64-js}.
*
* ```ts
* import { encodeBase32, decodeBase32 } from "@std/encoding/base32";
* import { assertEquals } from "@std/assert";
*
* assertEquals(encodeBase32("foobar"), "MZXW6YTBOI======");
*
* assertEquals(
* decodeBase32("MZXW6YTBOI======"),
* new TextEncoder().encode("foobar")
* );
* ```
*
* @module
*/
import { decode, encode } from "./_base32_common.js";
const lookup = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567".split("");
const revLookup = [];
lookup.forEach((c, i) => (revLookup[c.charCodeAt(0)] = i));
/**
* Decodes a base32-encoded string.
*
* @see {@link https://www.rfc-editor.org/rfc/rfc4648.html#section-6}
*
* @param b32 The base32-encoded string to decode.
* @returns The decoded data.
*
* @example Usage
* ```ts
* import { decodeBase32 } from "@std/encoding/base32";
* import { assertEquals } from "@std/assert";
*
* assertEquals(
* decodeBase32("GZRTMMDDGA======"),
* new TextEncoder().encode("6c60c0"),
* );
* ```
*/
export function decodeBase32(b32) {
return decode(b32, lookup);
}
/**
* Converts data into a base32-encoded string.
*
* @see {@link https://www.rfc-editor.org/rfc/rfc4648.html#section-6}
*
* @param data The data to encode.
* @returns The base32-encoded string.
*
* @example Usage
* ```ts
* import { encodeBase32 } from "@std/encoding/base32";
* import { assertEquals } from "@std/assert";
*
* assertEquals(encodeBase32("6c60c0"), "GZRTMMDDGA======");
* ```
*/
export function encodeBase32(data) {
return encode(data, lookup);
}