const csvToJson = require('csvtojson'); function processFiles(){ let props = []; csvToJson().fromFile('./data/i96tenant.csv').then(jsonObj => { let keys = Object.keys(jsonObj[0]); keys.forEach(key => { //props.push(`y['${key}'] =`); props.push(key.replaceAll(' ', '')) }); console.log(props); }); } processFiles();