base45 typescript implementation

Simple typescript base45 (charset of Qr codes, alphanumeric mode) encoder/decoder.

This library exports an ES module, together with the required type annotations.

Example

import * as b45 from "base45-ts";

const buffer : Uint8Array = new TextEncoder().encode('Hello!')
const e : string = b45.encode(buffer);
console.log(e); // Will output %69 VD92EX0"

const d = b45.decode('%69 VD92EX0')
console.log(d); // will output 'Uint8Array(7) [72, 101, 108, 108, 111, 33, 33]'

const d = b45.decodeToUtf8String('%69 VD92EX0')
console.log(d); // will output 'Hello!'

Exported functions

decode

decode(utf8StringArg: string): Uint8Array

Decode a base45-encoded string

Parameters

• utf8StringArg, string: A base45-encoded string

Returns

An Uint8Array containing the decoded data

decodeToUtf8String

decodeToUtf8String(utf8StringArg: string): string

Same as decode, but returns a string instead of a typed array. If the base45-encoded data was not valid UTF-8, throws an error.

Parameters

• utf8StringArg, string: base45-encoded string representing an utf8 string

Returns

the decoded string

encode

encode(byteArrayArg: Uint8Array | number[]): string

Encode binary data to base45

Parameters

• byteArrayArg: Uint8Array | number[] An array of bytes to encode

Returns

a base45-encoded string

Development

This library doesn't have any dependency.

• Build the code with npm run build
• Test with npm test