节点js中使用ghostscript时产生Spawn错误？

Question

我是节点环境的新手，并试图在nodejs中使用ghostscript [using node-gs]将pdf转换为图像，这是我正在使用的当前代码：

const spawn = require('child-process-promise').spawn;
var gs = require('gs');

var gsCall = function () {
  gs()
    .batch()
    .nopause()
    .res(150)
    .executablePath('lambda-ghostscript/bin/./gs')
    .option('-sPDFPassword=asdfTTT')
    .device('jpeg')
    .output('C:/Users/JCol/Desktop/output.jpeg')
    .input('C:/Users/JCol/Desktop/NSDL_01011977.pdf')
    .exec((err, stdout, stderr) => {
      if (!err) {
        console.log('Suceess');
      } else {
        console.log('gs error:', err);
      }
    });
};

gsCall(); 

但是上面的代码重新显示spawn ENOENT错误：

Error: spawn lambda-ghostscript/bin/./gs ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_pr
    at onErrorNT (internal/child_process.js:415:16)
    at process._tickCallback (internal/process/next_tick.js:6
    at Function.Module.runMain (internal/modules/cjs/loader.j
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
Emitted 'error' event at:
    at Process.ChildProcess._handle.onexit (internal/child_pr
    at onErrorNT (internal/child_process.js:415:16)
    [... lines matching original stack trace ...]
    at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3) 

package.json

{
  "name": "gsTest",
  "description": "gsTest",
  "scripts": {
    "serve": "firebase serve --only functions",
    "shell": "firebase functions:shell",
    "start": "npm run shell",
    "deploy": "firebase deploy --only functions",
    "logs": "firebase functions:log"
  },
  "engines": {
    "node": "8"
  },
  "dependencies": {
    "child-process-promise": "^2.2.1",
    "fs-extra": "^9.0.0",
    "gs": "https://github.com/sina-masnadi/node-gs/tarball/master"
  },
  "devDependencies": {
    "firebase-functions-test": "^0.1.6"
  },
  "private": true
}

lamabada-ghostscript文件夹与index.js在同一文件夹中，并且具有这样的结构lambda-ghostscript\bin

Answer 1

Here's指向解决此问题的答案的链接。当我尝试使用Google Cloud Functions部署可为PDF​​生成缩略图的API时遇到了它。