CSV reading with nodejs

csv.js

const fs = require('fs');

function fromCSVFile (path) { 
  // helper funcs
  const removeEmpty = a => a.length !== 0
  const removeLeading = a => a !== '';
  const euQuero = str => Boolean({
    'mundo': true,
    'regional': true,
  }[str]);

  return new Promise((resolve, reject) =>
    fs.readFile(path, 'utf8', (err, csv) => {
      if (err) reject(err);

      else {
        const linesArr = csv.split('\n');

        const rows = csv.split('\n');
        const header = rows.shift().split(';').filter(euQuero);
        const body = rows.map(r => r.split(';').filter(removeLeading));


        const result =  body.map(dataRow =>
          dataRow.reduce((acc, value, i) => Object.assign({}, acc, { [header[i]]: value }), [])
        ).filter(removeEmpty);

        resolve(result);
      }
    })
  );
}

const tree = arr => arr.map(obj =>
  Object.values(obj).reduce((acc, value) => (
    acc.concat( ' > ').concat(value)
  )
))

fromCSVFile('/home/alex/Downloads/gupy_funcionarios.csv').then(a => {
  console.log('Objeto ::: ', a);
  console.log('[Arvore] ::: ', tree(a)[0])
});

this could become a lib?

missing:

• error boundaries
• separator
• validation