Shuffle & match a list of names for whatever occasion.

shufflr.js

'use strict';


class Shufflr {
    
    constructor () {
        process.argv.splice(0, 2);

        this.people = process.argv.sort();
        this.selectedPeople = [];
        this.results = {};
    }

    names (index) {

        index = index || 0;

        let availablePeople = this.people.filter(x => this.selectedPeople.indexOf(x) == -1);
        let receiver = availablePeople[Math.round(Math.random() * (availablePeople.length - 1))];

        if (this.people[index] === receiver) {
            this.selectedPeople = [];
            return this.names(0);
        }

        this.selectedPeople.push(receiver);
        this.results[this.people[index]] = receiver;

        index += 1;
        if (index < this.people.length) {
            return this.names(index);
        }

        return this.results;
    }
    
}

let shuffle = new Shufflr();
console.log(shuffle.names());

Use: node shufflr.js [name ]
Example: node shufflr.js peter paul marry jane andrew

Will output something like:

{
  andrew: 'paul',
  jane: 'peter',
  marry: 'andrew',
  paul: 'marry',
  peter: 'jane'
}

Enjoy!
:)