/** * Created by WebStorm. * User: martin * Date: 27/07/2020 * Time: 10:08 */ const jsonfile = require('jsonfile'); const data = require('./unused.json'); function show(size) { const f = data.filter((v) => { return (v.length === size); }); jsonfile.writeFileSync('limited.json', [...new Set(f)]); console.log('done'); } show(11);