From bfd7397dde994e7cc611f7f2d9aedecd64e7fd04 Mon Sep 17 00:00:00 2001
From: Josh Vlk <josh@vlkpack.com>
Date: Mon, 3 Aug 2026 16:55:26 -0400
Subject: [PATCH] refactor: establish Observers folder feature

---
 rescript.json                                 | 29 +++++++------------
 .../IntersectionObserver.res                  |  0
 .../IntersectionObserverRoot.res              |  4 ++-
 .../IntersectionObserverTypes.res             |  0
 .../MutationObserver.res                      |  0
 .../ResizeObserver.res                        |  0
 .../ResizeObserverTypes.res                   |  0
 7 files changed, 13 insertions(+), 20 deletions(-)
 rename src/{IntersectionObserver => observers}/IntersectionObserver.res (100%)
 rename src/{IntersectionObserver => observers}/IntersectionObserverRoot.res (87%)
 rename src/{IntersectionObserver => observers}/IntersectionObserverTypes.res (100%)
 rename src/{MutationObserver => observers}/MutationObserver.res (100%)
 rename src/{ResizeObserver => observers}/ResizeObserver.res (100%)
 rename src/{ResizeObserver => observers}/ResizeObserverTypes.res (100%)

diff --git a/rescript.json b/rescript.json
index 681e79eb..65672937 100644
--- a/rescript.json
+++ b/rescript.json
@@ -19,6 +19,11 @@
     "WebAPI.Media": ["WebAPI.HTML", "Media"],
     "WebAPI.WebAudio": ["WebAPI.Media", "WebAPI.Messaging", "WebAudio"],
     "WebAPI.SVG": ["WebAPI.DOMNodes", "WebAPI.Geometry", "SVG"],
+    "WebAPI.Observers": [
+      "WebAPI.DOMNodes",
+      "WebAPI.Geometry",
+      "Observers"
+    ],
     "WebAPI.File": ["WebAPI.Event", "File"],
     "WebAPI.URL": ["WebAPI.DOM", "URL"],
     "WebAPI.Fetch": ["WebAPI.Event", "WebAPI.File", "WebAPI.URL", "Fetch"],
@@ -361,12 +366,14 @@
       ]
     },
     {
-      "dir": "src/IntersectionObserver",
+      "dir": "src/observers",
       "subdirs": true,
-      "feature": "WebAPI.IntersectionObserver",
+      "feature": "Observers",
       "public": [
         "IntersectionObserver",
-        "IntersectionObserverRoot"
+        "IntersectionObserverRoot",
+        "MutationObserver",
+        "ResizeObserver"
       ]
     },
     {
@@ -402,14 +409,6 @@
         "VideoPlaybackQuality"
       ]
     },
-    {
-      "dir": "src/MutationObserver",
-      "subdirs": true,
-      "feature": "WebAPI.MutationObserver",
-      "public": [
-        "MutationObserver"
-      ]
-    },
     {
       "dir": "src/performance",
       "subdirs": true,
@@ -428,14 +427,6 @@
         "Permissions"
       ]
     },
-    {
-      "dir": "src/ResizeObserver",
-      "subdirs": true,
-      "feature": "WebAPI.ResizeObserver",
-      "public": [
-        "ResizeObserver"
-      ]
-    },
     {
       "dir": "src/ServiceWorker",
       "subdirs": true,
diff --git a/src/IntersectionObserver/IntersectionObserver.res b/src/observers/IntersectionObserver.res
similarity index 100%
rename from src/IntersectionObserver/IntersectionObserver.res
rename to src/observers/IntersectionObserver.res
diff --git a/src/IntersectionObserver/IntersectionObserverRoot.res b/src/observers/IntersectionObserverRoot.res
similarity index 87%
rename from src/IntersectionObserver/IntersectionObserverRoot.res
rename to src/observers/IntersectionObserverRoot.res
index ea99dd53..1d5c88f7 100644
--- a/src/IntersectionObserver/IntersectionObserverRoot.res
+++ b/src/observers/IntersectionObserverRoot.res
@@ -10,10 +10,12 @@ type decoded =
   | Document(DOM.document)
   | Null
 
+let isDocument = (_: 't): bool => %raw(`param instanceof Document`)
+
 let decode = (t: IntersectionObserverTypes.root): decoded => {
   if Element.isInstanceOf(t) {
     Element(t->toElement)
-  } else if Document.isInstanceOf(t) {
+  } else if isDocument(t) {
     Document(t->toDocument)
   } else {
     Null
diff --git a/src/IntersectionObserver/IntersectionObserverTypes.res b/src/observers/IntersectionObserverTypes.res
similarity index 100%
rename from src/IntersectionObserver/IntersectionObserverTypes.res
rename to src/observers/IntersectionObserverTypes.res
diff --git a/src/MutationObserver/MutationObserver.res b/src/observers/MutationObserver.res
similarity index 100%
rename from src/MutationObserver/MutationObserver.res
rename to src/observers/MutationObserver.res
diff --git a/src/ResizeObserver/ResizeObserver.res b/src/observers/ResizeObserver.res
similarity index 100%
rename from src/ResizeObserver/ResizeObserver.res
rename to src/observers/ResizeObserver.res
diff --git a/src/ResizeObserver/ResizeObserverTypes.res b/src/observers/ResizeObserverTypes.res
similarity index 100%
rename from src/ResizeObserver/ResizeObserverTypes.res
rename to src/observers/ResizeObserverTypes.res