Remove unused package-lock.json files before building

script/build

@@ -58,6 +58,7 @@ const CONFIG = require('./config')
 let binariesPromise = Promise.resolve()
 
 if (!argv.existingBinaries) {
+  cleanPackageLock()
   checkChromedriverVersion()
   cleanOutputDirectory()
   copyAssets()

script/lib/clean-package-lock.js

@@ -0,0 +1,18 @@
+// This module exports a function that deletes all `package-lock.json` files that do
+// not exist under a `node_modules` directory.
+
+'use strict'
+
+const CONFIG = require('../config')
+const fs = require('fs-extra')
+const glob = require('glob')
+const path = require('path')
+
+module.exports = function () {
+  console.log('Deleting problematic package-lock.json files')
+  let paths = glob.sync(path.join(CONFIG.repositoryRootPath, '**', 'package-lock.json'), {ignore: path.join('**', 'node_modules', '**')})
+
+  for (let path of paths) {
+    fs.unlinkSync(path)
+  }
+}