add node modules to repo

node_modules/fs-extra/lib/json/output-json-sync.js

@@ -0,0 +1,18 @@
+'use strict'
+
+const fs = require('graceful-fs')
+const path = require('path')
+const mkdir = require('../mkdirs')
+const jsonFile = require('./jsonfile')
+
+function outputJsonSync (file, data, options) {
+  const dir = path.dirname(file)
+
+  if (!fs.existsSync(dir)) {
+    mkdir.mkdirsSync(dir)
+  }
+
+  jsonFile.writeJsonSync(file, data, options)
+}
+
+module.exports = outputJsonSync