loop.js

const loop = (gen, interval) => {
  const point = gen.next();
  if(!point.done) {
    return setTimeout(() => {
      console.log(point.value);
      loop(gen, interval);
    }, interval);
  } else {
    console.log('done');
  }
};

class Loop {
  constructor(data, interval) {
    this.data = data;
    this.interval = interval;
  }

  generate() {
    const data = this.data;
    const gen = function*() {
      yield* data;
    };

    return loop(gen(), this.interval);
  }
}

module.exports = Loop;

looper.js

var Loop = require('./loop');
(
  () => {
    const data = [
      {
        lat: 1,
        long: 2,
      },
      {
        lat: 4,
        long: 5,
      },
      {
        lat: 2,
        long: 3,
      }
    ];
    const data2 = [
      {
        lat: 11,
        long: 21,
      },
      {
        lat: 41,
        long: 51,
      },
      {
        lat: 21,
        long: 31,
      }
    ];
  const loop = new Loop(data, 500);
  loop.generate();
  const loop2 = new Loop(data2, 1500);
  loop2.generate();
  }
)();