Vuepress broken link checker

linkchecker.js

const path = require( 'path' );
const express = require( 'express' );

const app = express();

const blc = () => {
  let err = 0
  const blc = require('broken-link-checker')
  const siteChecker = new blc.SiteChecker({}, {
    robots: function(robots, customData){},
    html: function(tree, robots, response, pageUrl, customData){},
    junk: function(result, customData){},
    link: (result, customData) => {
      if(result.broken) {
        err++
        console.info(`Broken link in ${result.base.original} to ${result.url.original} with ${result.brokenReason}`)
        //console.info("l: " + JSON.stringify(result))
      }
    },
    page: (error, pageUrl, customData) => {},
    site: function(error, siteUrl, customData){},
    end: () => {
      console.info( `BLC finished with ${err} roken links`);
      process.exit(err)
    }
  });

  siteChecker.enqueue("http://localhost:8080/", {});
}

app.use('/',
  express.static( path.resolve( __dirname, './docs/.vuepress/dist/' ) )
);app.listen(8080, 'localhost', ( err ) => {
  if ( err ) {
    console.error( err )
    process.exit(1)
  } else {
    console.info( 'Listening at http://localhost:8080' );
    blc()
  }
});

package.json

{
  ...
  "scripts": {
    "docs:dev": "vuepress dev --debug docs",
    "docs:build": "vuepress build docs",
    "docs:check": "node linkchecker.js",
    "clean": "rm -rf node_modules",
    "reinstall": "npm run clean && npm install",
    "docs:clean": "rm -rf docs/.vuepress/dist/ && rm -rf node_modules/@vuepress/core/node_modules/.cache"
  },
  ...
  "devDependencies": {
    "broken-link-checker": "^0.7.8",
    "express": "^4.17.1",
    "path": "^0.12.7",
    "vuepress": "^1.8.2"
  },
}