cli.ts

import { createContext, parseError, runInContext } from '../index'
const fs = require('fs')

function main() {
  const chapter = 4
  const path = process.argv[2]

  const code = fs.readFileSync(path, 'utf8')
  const context = createContext(chapter)

  runInContext(code, context).then(obj => {
    if (obj.status === 'finished') {
      console.log(obj.value)
    } else {
      console.log(parseError(context.errors))
    }
  })
}

main()

Create a new file src/repl/cli.ts using the code, rebuild using yarn build and run using node dist/repl/cli.js [FILE]