Remove fs-extra dependency

server/libs/fsExtra/path-exists/index.js

@@ -0,0 +1,12 @@
+'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
+}