From 76d7311b4579020d3c5a382e06efff66d9bb2295 Mon Sep 17 00:00:00 2001
From: Tom Ruttle <tom@tomruttle.com>
Date: Mon, 26 Feb 2018 13:32:06 +0000
Subject: [PATCH] include missing data in error message

---
 lib/utils/reconcile.js | 10 ++++++----
 package.json           |  2 +-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/lib/utils/reconcile.js b/lib/utils/reconcile.js
index 288c0e9..4d7ba71 100644
--- a/lib/utils/reconcile.js
+++ b/lib/utils/reconcile.js
@@ -39,9 +39,10 @@ export default function initReconcile(config: ConfigType) {
     }
 
     const appFragments = appFragmentNames.map((fragmentName) => fragments[fragmentName]);
+    const missingFragments = appFragments.filter((fragment) => !fragment);
 
-    if (!appFragments.every(Boolean)) {
-      throw new AppManagerError(`App ${appName} tried to mount at least one missing fragment.`, Object.assign({}, errData, {
+    if (missingFragments.length > 0) {
+      throw new AppManagerError(`App ${appName} tried to mount at least one missing fragment: ${missingFragments.join(', ')}`, Object.assign({}, errData, {
         level: levels.ERROR,
         code: 'missing_fragment',
         recoverable: false,
@@ -64,9 +65,10 @@ export default function initReconcile(config: ConfigType) {
       .reduce((empty, slotName) => Object.assign(empty, { [slotName]: null }), {});
 
     const mountableSlots = Object.keys(emptySlots).map((slotName) => slots[slotName]);
+    const missingSlots = mountableSlots.filter((slot) => !slot);
 
-    if (!mountableSlots.every(Boolean)) {
-      throw new AppManagerError(`App ${appName} tried to mount into at least one missing slot.`, Object.assign({}, errData, {
+    if (missingSlots.length > 0) {
+      throw new AppManagerError(`App ${appName} tried to mount into at least one missing slot: ${missingSlots.join(', ')}`, Object.assign({}, errData, {
         level: levels.ERROR,
         code: 'invalid_slots',
         recoverable: false,
diff --git a/package.json b/package.json
index 3a49732..6dd793c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "app-manager",
-  "version": "0.22.1",
+  "version": "0.22.2",
   "description": "Script for managing the lifecycles of multiple apps on a single page",
   "main": "es5/index.js",
   "scripts": {