Create a Node REPL with History

load_history.js

const repl = require(‘repl’)
const server = repl.start({ /* your config options */ })

// synchronous methods are fine, here. you don't want to run a REPL on any middleware that
// handles user requests, anyway.
fs.statSync('.node_repl_history')

// load command history from a file called .node_repl history in the current directory
fs.readFileSync('.node_repl_history')
  .split(‘\n’)
  .reverse()
  .filter(line => line.trim())
  .map(line => server.history.push(line))

save_history.js

// write commands used in current session to file
fs.appendFileSync(this.node_repl_history, this.server.lines.join('\n'))