const ndjsonParser = require('ndjson-parse');
 
const ndjsonString =  `{"some":"thing"}
{"foo":17,"bar":false,"quux":true}
{"may":{"include":"nested","objects":["and","arrays"]}}`
 
const parsedNdjson = ndjsonParser(ndjsonString);
 
console.log(parsedNdjson[0].some) // thing