create-oclif/templates/single/bin/run.ts

oclif: create your own CLI

#!/usr/bin/env node

const fs = require('fs')
const path = require('path')
const dev = fs.existsSync(path.join(__dirname, '../tsconfig.json'))

if (dev) require('ts-node/register')

require(`../${dev ? 'src' : 'lib'}`).run()
.catch(require('@oclif/errors/handle'))