shebang-command 
Get the command from a shebang
Install
$ npm install shebang-command
Usage
const shebangCommand = require('shebang-command');
shebangCommand('#!/usr/bin/env node');
//=> 'node'
shebangCommand('#!/bin/bash');
//=> 'bash'
API
shebangCommand(string)
string
Type: string
String containing a shebang.