From 2d5dff2d590df6ad9cd5f400e76bddfc20906d41 Mon Sep 17 00:00:00 2001
From: s-ol <s-ol@users.noreply.github.com>
Date: Fri, 12 Jul 2019 17:36:41 +0200
Subject: fail-early for <mmm-embed>

---
 mmm/mmmfs/browser.moon |  2 +-
 mmm/mmmfs/util.moon    | 13 +++++++++++--
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/mmm/mmmfs/browser.moon b/mmm/mmmfs/browser.moon
index ca77b9c..379537e 100644
--- a/mmm/mmmfs/browser.moon
+++ b/mmm/mmmfs/browser.moon
@@ -179,7 +179,7 @@ class Browser
     elseif ok
       div "[no conversion path to #{prop.type}]"
     elseif res and res.match and res\match '%[nossr%]$'
-      div "[this page could not be pre-renderer on the server]"
+      div "[this page could not be pre-rendered on the server]"
     else
       if trace
         res = "#{res}\n#{trace}"
diff --git a/mmm/mmmfs/util.moon b/mmm/mmmfs/util.moon
index 8c80b6b..68a970a 100644
--- a/mmm/mmmfs/util.moon
+++ b/mmm/mmmfs/util.moon
@@ -4,7 +4,7 @@ merge = (orig={}, extra) ->
       attr[k] = v
 
 (elements) ->
-  import a from elements
+  import a, div, pre from elements
 
   find_fileder = (fileder, origin) ->
     if 'string' == type fileder
@@ -39,7 +39,16 @@ merge = (orig={}, extra) ->
   embed = (fileder, name='', origin, opts={}) ->
     fileder = find_fileder fileder, origin
 
-    node = fileder\gett name, 'mmm/dom'
+    -- node = fileder\gett name, 'mmm/dom'
+    ok, node = pcall fileder.gett, fileder, name, 'mmm/dom'
+
+    if not ok
+      return div "couldn't embed #{fileder} #{name}",
+          (pre node),
+          style: {
+            background: 'var(--gray-fail)',
+            padding: '1em',
+          }
 
     return node if opts.nolink
     link_to fileder, node, nil, opts.attr
-- 
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