index.js

//Required modules
const { parse } = require('csv-parse');
const fs = require('fs');

//Results array
const habitablePlanets = [];

function isHabitablePlanet(planet) {
    return planet['koi_disposition'] === 'CONFIRMED'
      && planet['koi_insol'] > 0.36 && planet['koi_insol'] < 1.11
      && planet['koi_prad'] < 1.6;
}

fs.createReadStream('kepler_data.csv')
.pipe(parse({
    comment: '#',
    columns: true,
}))    
.on('data', (data) => {
        if (isHabitablePlanet(data)) {
            habitablePlanets.push(data);
        }
    })
    .on('error', (err) => {
        console.log(err);
    })
    .on('end', () => {
        console.log(habitablePlanets.map((planet) => {
            return planet['kepler_name'];
        })); 
        console.log(`${habitablePlanets.length} habitable planets have been found!`);
    });