add node modules to repo

node_modules/electron-packager/hooks.js

@@ -0,0 +1,25 @@
+'use strict'
+
+const pify = require('pify')
+
+module.exports = {
+  promisifyHooks: function promisifyHooks (hooks, args) {
+    if (!hooks || !Array.isArray(hooks)) {
+      return Promise.resolve()
+    }
+
+    return Promise.all(hooks.map(hookFn => pify(hookFn).apply(this, args)))
+  },
+  serialHooks: function serialHooks (hooks) {
+    return function () {
+      const args = Array.prototype.splice.call(arguments, 0, arguments.length - 1)
+      const done = arguments[arguments.length - 1]
+      let result = Promise.resolve()
+      for (const hook of hooks) {
+        result = result.then(() => hook.apply(this, args))
+      }
+
+      return result.then(() => done()) // eslint-disable-line promise/no-callback-in-promise
+    }
+  }
+}