Added .editorconfig file

Author: TheSpyder

.editorconfig

@@ -0,0 +1,10 @@
+# top-most EditorConfig file
+root = true
+
+[*]
+insert_final_newline = false
+indent_style = space
+indent_size = 2
+charset = utf-8
+trim_trailing_whitespace = true
+end_of_line = lf

tests/Webapi/Dom/Webapi__Dom__MutationObserver__test.res

@@ -4,14 +4,17 @@ open MutationObserver
 let el = document->Document.createElement("strong")
 let observer: t = MutationObserver.make((_records, _observer) => ())
 
-let _ = observer->MutationObserver.observe(el, {
-  "subtree": true,
-  "childList": true,
-  "attributes": true,
-  "attributeOldValue": true,
-  "characterData": true,
-  "characterDataOldValue": true,
-})
+let _ = observer->MutationObserver.observe(
+  el,
+  {
+    "subtree": true,
+    "childList": true,
+    "attributes": true,
+    "attributeOldValue": true,
+    "characterData": true,
+    "characterDataOldValue": true,
+  },
+)
 
 let _ = observer->MutationObserver.disconnect
 let records: array<Dom.mutationRecord> = observer->MutationObserver.takeRecords
@@ -28,4 +31,4 @@ let recordPrevSibling: option<Dom.node> = aRecord->previousSibling
 let recordNextSibling: option<Dom.node> = aRecord->nextSibling
 let recordAttributeName: option<string> = aRecord->attributeName
 let recordAttributeNamespace: option<string> = aRecord->attributeNamespace
-let recordOldValue: option<string> = aRecord->oldValue
+let recordOldValue: option<string> = aRecord->oldValue