'use strict'; const fs = require('fs'); const filename = '/mnt/testing/file.txt'; function writer(event, context, callback) { fs.writeFileSync(filename, 'fromlambda', 'utf8'); return callback(null, event); } function reader(event, context, callback) { const result = fs.readFileSync(filename, 'utf8'); return callback(null, { result }); } module.exports = { writer, reader };