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AlexVOiceoverAlexVOiceover
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fix: add comprehensive React shim to fix useLayoutEffect and createContext errors
- Added react-shim.ts that polyfills all required React global methods - Added import statements to all Radix UI component files - Updated index.html to include more robust React polyfill with non-configurable properties - Improved TypeScript type handling for global React object
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9 files changed

+83
-19
lines changed

9 files changed

+83
-19
lines changed

‎index.html‎

Lines changed: 20 additions & 8 deletions
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@@ -4,21 +4,33 @@
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Beacons</title>
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<!-- Preload polyfill to ensure React is available globally -->
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<!-- CRITICAL: Polyfill to ensure React is available globally -->
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<script>
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// Global React polyfill to prevent errors like:
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// - Cannot read properties of undefined (reading 'useLayoutEffect')
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// - Cannot read properties of undefined (reading 'createContext')
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if (typeof window !== 'undefined') {
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window.React = window.React || {};
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// THIS MUST RUN BEFORE ANY OTHER SCRIPTS
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(function() {
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// Global React polyfill to prevent errors like:
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// - Cannot read properties of undefined (reading 'useLayoutEffect')
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// - Cannot read properties of undefined (reading 'createContext')
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window.React = {};
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window.React.useState = function() { return [undefined, function() {}]; };
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window.React.useEffect = function() { return function() {}; };
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window.React.useLayoutEffect = function() { return function() {}; };
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window.React.useRef = function() { return { current: null }; };
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window.React.useContext = function() { return {}; };
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window.React.createContext = function() { return { Provider: function() {}, Consumer: function() {} }; };
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window.React.createContext = function() { return { Provider: function(){}, Consumer: function(){} }; };
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window.React.forwardRef = function(fn) { return fn; };
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}
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window.React.Children = { map: function(){}, forEach: function(){}, count: function(){}, only: function(){} };
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window.React.Fragment = "Fragment";
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window.React.StrictMode = "StrictMode";
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window.React.cloneElement = function() { return {}; };
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window.React.createElement = function() { return {}; };
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// Ensure this polyfill isn't overridden
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Object.defineProperty(window, 'React', {
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configurable: false,
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writable: false
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});
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})();
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</script>
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</head>
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<body>

‎src/App.tsx‎

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'use client';
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// Import reactive shim first to ensure global React is available
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import './lib/react-shim';
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import React, { useEffect } from 'react';
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import { TooltipProvider } from '@radix-ui/react-tooltip';
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‎src/components/ui/dialog.tsx‎

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@@ -1,7 +1,7 @@
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'use client';
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// Import the polyfill early
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import '../../lib/utils/radix-utils';
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// Import react-shim to ensure React global methods exist
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import '../../lib/react-shim';
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import * as React from 'react';
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import * as DialogPrimitive from '@radix-ui/react-dialog';

‎src/components/ui/dropdown-menu.tsx‎

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@@ -1,7 +1,7 @@
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'use client';
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// Import the polyfill early
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import '../../lib/utils/radix-utils';
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// Import react-shim to ensure React global methods exist
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import '../../lib/react-shim';
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import * as React from 'react';
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import * as DropdownMenuPrimitive from '@radix-ui/react-dropdown-menu';

‎src/components/ui/label.tsx‎

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@@ -1,7 +1,7 @@
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'use client';
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// Import the polyfill early
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import '../../lib/utils/radix-utils';
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// Import react-shim to ensure React global methods exist
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import '../../lib/react-shim';
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import * as React from 'react';
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import * as LabelPrimitive from '@radix-ui/react-label';

‎src/components/ui/popover.tsx‎

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'use client';
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// Import the polyfill early
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import '../../lib/utils/radix-utils';
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// Import react-shim to ensure React global methods exist
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import '../../lib/react-shim';
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import * as React from 'react';
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import * as PopoverPrimitive from '@radix-ui/react-popover';

‎src/components/ui/tooltip.tsx‎

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@@ -1,7 +1,7 @@
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'use client';
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// Import the polyfill early
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import '../../lib/utils/radix-utils';
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// Import react-shim to ensure React global methods exist
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import '../../lib/react-shim';
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import * as React from 'react';
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import * as TooltipPrimitive from '@radix-ui/react-tooltip';

‎src/lib/react-shim.ts‎

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/**
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* This module ensures React global methods are available
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* It's particularly needed for Radix components that expect
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* React.useLayoutEffect and React.createContext to be available globally
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*/
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// Force window.React to exist and have key methods
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if (typeof window !== 'undefined') {
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// Create stubs for common React methods
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const noop = () => {};
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const noopReturn = () => () => {};
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const emptyObj = {};
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// Only add if missing
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if (!window.React) {
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(window as any).React = {};
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}
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// Add missing methods - use type assertion for TypeScript
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const reactShim = (window as any).React;
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if (!reactShim.useState) reactShim.useState = () => [undefined, noop];
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if (!reactShim.useEffect) reactShim.useEffect = noopReturn;
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if (!reactShim.useLayoutEffect) reactShim.useLayoutEffect = reactShim.useEffect || noopReturn;
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if (!reactShim.useRef) reactShim.useRef = () => ({ current: null });
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if (!reactShim.useContext) reactShim.useContext = () => emptyObj;
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if (!reactShim.createContext) reactShim.createContext = () => ({ Provider: noop, Consumer: noop });
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if (!reactShim.forwardRef) reactShim.forwardRef = (fn: any) => fn;
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if (!reactShim.createElement) reactShim.createElement = () => emptyObj;
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if (!reactShim.cloneElement) reactShim.cloneElement = () => emptyObj;
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// Only add these if they don't exist
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if (!reactShim.Children) {
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reactShim.Children = {
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map: noop,
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forEach: noop,
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count: noop,
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only: noop,
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};
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}
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if (!reactShim.Fragment) reactShim.Fragment = 'Fragment';
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if (!reactShim.StrictMode) reactShim.StrictMode = 'StrictMode';
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}
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// Export to ensure this file isn't tree-shaken
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export default function ensureReactExists() {
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return true;
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}

‎src/main.tsx‎

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// Import the polyfill first, before any other imports
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import './lib/utils/radix-utils';
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import './lib/react-shim';
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import { StrictMode } from 'react';
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import { createRoot } from 'react-dom/client';

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