Conspiracy santa generator

conspiracy-santa.js

const names = require("./names.json");
const numberOfConspirators = 4;

// Randomise names - comment out for repeatable results.
names.sort(function() {
  return 0.5 - Math.random();
});

console.log(
  JSON.stringify(
    names.map((mark, index) => {
      var conspirators = [];
      for (var i = 0; i < numberOfConspirators; i++) {
        conspirators.push(
          names[(index + 1 + (i / 2) * (i + 1)) % names.length]
        );
      }
      return { mark, conspirators };
    })
  )
);