├── index.js
├── kepler_data.csv
├── package-lock.json
└── package.json


/index.js:
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 1 | const { parse } = require('csv-parse');
 2 | const fs = require('fs');
 3 | 
 4 | const habitablePlanets = [];
 5 | 
 6 | function isHabitablePlanet(planet) {
 7 |   return planet['koi_disposition'] === 'CONFIRMED'
 8 |     && planet['koi_insol'] > 0.36 && planet['koi_insol'] < 1.11
 9 |     && planet['koi_prad'] < 1.6;
10 | }
11 | 
12 | fs.createReadStream('kepler_data.csv')
13 |   .pipe(parse({
14 |     comment: '#',
15 |     columns: true,
16 |   }))
17 |   .on('data', (data) => {
18 |     if (isHabitablePlanet(data)) {
19 |       habitablePlanets.push(data);
20 |     }
21 |   })
22 |   .on('error', (err) => {
23 |     console.log(err);
24 |   })
25 |   .on('end', () => {
26 |     console.log(habitablePlanets.map((planet) => {
27 |       return planet['kepler_name'];
28 |     }));
29 |     console.log(`${habitablePlanets.length} habitable planets found!`);
30 |   });
31 | 
32 | 


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/package-lock.json:
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 1 | {
 2 |   "name": "planets-project",
 3 |   "version": "1.0.0",
 4 |   "lockfileVersion": 3,
 5 |   "requires": true,
 6 |   "packages": {
 7 |     "": {
 8 |       "name": "planets-project",
 9 |       "version": "1.0.0",
10 |       "license": "ISC",
11 |       "dependencies": {
12 |         "csv-parse": "^5.5.6"
13 |       }
14 |     },
15 |     "node_modules/csv-parse": {
16 |       "version": "5.5.6",
17 |       "resolved": "https://registry.npmjs.org/csv-parse/-/csv-parse-5.5.6.tgz",
18 |       "integrity": "sha512-uNpm30m/AGSkLxxy7d9yRXpJQFrZzVWLFBkS+6ngPcZkw/5k3L/jjFuj7tVnEpRn+QgmiXr21nDlhCiUK4ij2A=="
19 |     }
20 |   }
21 | }
22 | 


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/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "planets-project",
 3 |   "version": "1.0.0",
 4 |   "description": "",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "test": "echo \"Error: no test specified\" && exit 1"
 8 |   },
 9 |   "keywords": [],
10 |   "author": "",
11 |   "license": "ISC",
12 |   "dependencies": {
13 |     "csv-parse": "^5.5.6"
14 |   }
15 | }
16 | 


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