'use strict' const fs = require('fs') const filename = process.env.FILENAME 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 }