fix isReactElement for react 19

README.md

@@ -1,3 +1,6 @@
+This repo is forked from [rtfeldman/seamless-immutable](https://github.com/rtfeldman/seamless-immutable) to support React 19.
+------------------
+
 seamless-immutable
 ==================
 

package.json

@@ -1,6 +1,6 @@
 {
-  "name": "seamless-immutable",
-  "version": "7.1.4",
+  "name": "@qlqllu/seamless-immutable",
+  "version": "7.1.5",
   "description": "Immutable data structures for JavaScript which are backwards-compatible with normal JS Arrays and Objects.",
   "main": "src/seamless-immutable.js",
   "browser": "seamless-immutable.development.js",
@@ -34,7 +34,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/rtfeldman/seamless-immutable.git"
+    "url": "https://github.com/qlqllu/seamless-immutable"
   },
   "keywords": [
     "immutable"
@@ -49,5 +49,5 @@
     "validthis": true,
     "proto": true
   },
-  "homepage": "https://github.com/rtfeldman/seamless-immutable"
+  "homepage": "https://github.com/qlqllu/seamless-immutable"
 }

seamless-immutable.development.js

@@ -3,9 +3,9 @@
 
 function immutableInit(config) {
 
-  // https://github.com/facebook/react/blob/v15.0.1/src/isomorphic/classic/element/ReactElement.js#L21
-  var REACT_ELEMENT_TYPE = typeof Symbol === 'function' && Symbol.for && Symbol.for('react.element');
-  var REACT_ELEMENT_TYPE_FALLBACK = 0xeac7;
+  // https://github.com/facebook/react/blob/v19.0.0/packages/shared/ReactSymbols.js#L16
+  var REACT_LEGACY_ELEMENT_TYPE = Symbol.for('react.element');
+  var REACT_ELEMENT_TYPE = Symbol.for('react.transitional.element')
 
   var globalConfig = {
     use_static: false
@@ -604,7 +604,7 @@ function immutableInit(config) {
   function isReactElement(obj) {
     return typeof obj === 'object' &&
            obj !== null &&
-           (obj.$$typeof === REACT_ELEMENT_TYPE_FALLBACK || obj.$$typeof === REACT_ELEMENT_TYPE);
+           (obj.$$typeof === REACT_ELEMENT_TYPE || obj.$$typeof === REACT_LEGACY_ELEMENT_TYPE);
   }
 
   function isFileObject(obj) {