ulid-uuid-converter

A tiny zero dependency library for ULID to UUID conversion and vice versa.

Installation

npm i ulid-uuid-converter

Usage

import { UUIDtoULID, ULIDtoUUID } from "ulid-uuid-converter";

const ulid = UUIDtoULID("0186675b-9439-536e-1c4c-561c280fa87b");
// outputs: 01GSKNQ51SADQ1RK2P3GM0ZA3V

const uuid = ULIDtoUUID("01GSKNQ51SADQ1RK2P3GM0ZA3V");
// outputs: 0186675b-9439-536e-1c4c-561c280fa87b

Options

You can pass an optional second argument with nullOnInvalidInput to both functions. With this option the function behavior changes: instead of throwing, it will return null if a bad input is passed as argument.

Option	Type	Default	Description
nullOnInvalidInput	boolean	false	Return null instead of throwing on bad input

Example

// these will throw!
const ulid = UUIDtoULID("bad string");
const uuid = ULIDtoUUID("another bad string");

// these will return null instead of throwing
const ulid = UUIDtoULID("bad string", { nullOnInvalidInput: true });
const uuid = ULIDtoUUID("another bad string", { nullOnInvalidInput: true });

Credits

Big thanks to devbanana for the Crockford's Base32 encoding and decoding functions.

License

This project is licensed under the MIT License.