typescript-functional-extensions/dist/esm/unit.js

A TypeScript implementation of synchronous and asynchronous Maybe and Result monads

export class Unit {
    static instance;
    constructor() {
        if (!Unit.instance) {
            Unit.instance = this;
        }
        return Unit.instance;
    }
    static get Instance() {
        return this.instance ?? new Unit();
    }
    toString() {
        return 'Unit';
    }
}