[DXEX-458] Add explicit lodash require statements.

Author: Chris Geihsler

src/rules/facebook-custom-picture.js

@@ -9,6 +9,8 @@
  */
 
 function facebookCustomPicture(user, context, callback) {
+  const _ = require('lodash');
+
   if (context.connection === 'facebook') {
     const fbIdentity = _.find(user.identities, { connection: 'facebook' });
     // for more sizes and types of images that can be returned, see:

src/rules/get-twitter-email.js

@@ -26,6 +26,7 @@ function getTwitterEmail(user, context, callback) {
     return callback(null, user, context);
   }
 
+  const _ = require('lodash');
   const request = require('request');
   const oauth = require('oauth-sign');
   const uuid = require('uuid');

src/rules/linkedin-original-picture.js

@@ -13,6 +13,7 @@ function useOriginallinkedInProfilePicture(user, context, callback) {
     return callback(null, user, context);
   }
 
+  const _ = require('lodash');
   const request = require('request');
 
   const liIdentity = _.find(user.identities, { connection: 'linkedin' });

src/rules/requestbin.js

@@ -15,6 +15,7 @@
  */
 
 function sendVariablesToRequestBin(user, context, callback) {
+  const _ = require('lodash');
   const request = require('request');
 
   // https://auth0.com/docs/user-profile/user-profile-structure

src/rules/zapier-new-login.js

@@ -13,6 +13,7 @@
  */
 
 function triggerZapOnUserLogin(user, context, callback) {
+  const _ = require('lodash');
   const request = require('request');
 
   const small_context = {

src/rules/zapier-new-user.js

@@ -18,6 +18,7 @@ function triggerZapOnNewUser(user, context, callback) {
     return callback(null, user, context);
   }
 
+  const _ = require('lodash');
   const request = require('request');
 
   const small_context = {