How to handle operations on large arrays in ECMAScript6, say for parsing bibfiles

parsingBibfiles.js

const parseRecord = function (rawRecord) {
  // Parsing logic goes here
}

const fs = require('fs')
const records = fs.readFileSync('myBibfile.bib')
  .split('@') // @ is the delimiter in bibfiles

// Array.from() takes an iterable argument *and* a mapping function 
// if you want to map elements from the source array
let parsedRecords = Array.from(records, parseRecord)