Revert "Commit updated Javascript packages"

This reverts commit a88734348a.

build/javascript/node_modules/fs-extra/lib/path-exists/index.js

@@ -1,12 +0,0 @@
-'use strict'
-const u = require('universalify').fromPromise
-const fs = require('../fs')
-
-function pathExists (path) {
-  return fs.access(path).then(() => true).catch(() => false)
-}
-
-module.exports = {
-  pathExists: u(pathExists),
-  pathExistsSync: fs.existsSync
-}