Modernize build setup and harden DarkModeSwitch for React 16–19

.changeset/README.md

@@ -0,0 +1,8 @@
+# Changesets
+
+Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
+with multi-package repos, or single-package repos to help you version and publish your code. You can
+find the full documentation for it [in our repository](https://github.com/changesets/changesets)
+
+We have a quick list of common questions to get you started engaging with this project in
+[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)

.changeset/config.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://unpkg.com/@changesets/config@3.1.2/schema.json",
+  "changelog": "@changesets/cli/changelog",
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "restricted",
+  "baseBranch": "main",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}

.github/workflows/main.yml

@@ -6,37 +6,77 @@ jobs:
 
     steps:
       - name: Begin CI...
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
-      - name: Use Node 12
-        uses: actions/setup-node@v1
-        with:
-          node-version: 12.x
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
 
-      - name: Use cached node_modules
-        uses: actions/cache@v1
+      - name: Use Node 20
+        uses: actions/setup-node@v4
         with:
-          path: node_modules
-          key: nodeModules-${{ hashFiles('**/yarn.lock') }}
-          restore-keys: |
-            nodeModules-
+          node-version: 20.x
+          cache: pnpm
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
 
       - name: Install dependencies
-        run: yarn install --frozen-lockfile
+        run: pnpm install --frozen-lockfile
         env:
           CI: true
 
       - name: Lint
-        run: yarn lint
+        run: pnpm lint
         env:
           CI: true
 
       - name: Test
-        run: yarn test --ci --coverage --maxWorkers=2
+        run: pnpm test
         env:
           CI: true
 
       - name: Build
-        run: yarn build
+        run: pnpm build
+        env:
+          CI: true
+
+  react-compatibility:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        react-version: [16.14.0, 17.0.2, 18.3.1, 19.0.0]
+
+    steps:
+      - name: Begin compatibility checks...
+        uses: actions/checkout@v4
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+
+      - name: Use Node 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+          cache: pnpm
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+        env:
+          CI: true
+
+      - name: Test React ${{ matrix.react-version }} compatibility
+        run: pnpm add -Dw react@${{ matrix.react-version }} react-dom@${{ matrix.react-version }} --ignore-scripts
+
+      - name: Run tests
+        run: pnpm test
+        env:
+          CI: true
+
+      - name: Build with matrix React version
+        run: pnpm build
         env:
           CI: true

.gitignore

@@ -1,5 +1,7 @@
 *.log
 .DS_Store
 node_modules
+.pnpm-store
 .cache
 dist
+.parcel-cache

.husky/pre-commit

@@ -0,0 +1 @@
+pnpm lint

README.md

@@ -5,7 +5,7 @@
   <a href="https://www.npmjs.com/package/react-toggle-dark-mode" target="_blank">
     <img alt="Version" src="https://img.shields.io/npm/v/react-toggle-dark-mode.svg">
   </a>
-  <img src="https://img.shields.io/badge/node-%3E%3D10-blue.svg" />
+  <img src="https://img.shields.io/badge/node-%3E%3D20-blue.svg" />
   <a href="#" target="_blank">
     <img alt="License: MIT" src="https://img.shields.io/badge/License-MIT-yellow.svg" />
   </a> 
@@ -17,29 +17,31 @@
 
 > 🌃 Animated dark mode toggle as seen in blogs!
 
+Supports React 16.14+ through 19.
+
 ![Interactive sun and moon transition](./docs/demo.gif)
 
 ## Prerequisites
 
-- node >=10
+- node >=20
 
 ## Installation
 
 ```shell
 npm i react-toggle-dark-mode
 ```
 
-or with Yarn:
+or with pnpm:
 
 ```shell
-yarn add react-toggle-dark-mode
+pnpm add react-toggle-dark-mode
 ```
 
 ## Usage
 
 ```jsx
 import * as React from 'react';
-import * as ReactDOM from 'react-dom';
+import { createRoot } from 'react-dom/client';
 import { DarkModeSwitch } from 'react-toggle-dark-mode';
 
 const App = () => {
@@ -58,6 +60,14 @@ const App = () => {
     />
   );
 };
+
+const rootElement = document.getElementById('root');
+
+if (!rootElement) {
+  throw new Error('Unable to find root element');
+}
+
+createRoot(rootElement).render(<App />);
 ```
 
 ## API
@@ -66,15 +76,20 @@ const App = () => {
 
 #### Props
 
-| Name                | Type                         | Default Value                   | Description                               |
-| ------------------- | ---------------------------- | ------------------------------- | ----------------------------------------- |
-| onChange            | \(checked: boolean\) => void |                                 | Event that triggers when icon is clicked. |
-| checked             | boolean                      | false                           | Current icon state.                       |
-| style               | Object                       |                                 | CSS properties object.                    |
-| size                | number                       | 24                              | SVG size.                                 |
-| animationProperties | Object                       | defaultProperties \(see below\) | Override default animation properties.    |
-| moonColor           | string                       | white                           | Color of the moon.                        |
-| sunColor            | string                       | black                           | Color of the sun.                         |
+| Name                | Type                                               | Default Value                   | Description                                                                                  |
+| ------------------- | -------------------------------------------------- | ------------------------------- | -------------------------------------------------------------------------------------------- |
+| onChange            | \(checked: boolean\) => void                       |                                 | Event that triggers when icon is clicked.                                                    |
+| checked             | boolean                                            | false                           | Current icon state.                                                                          |
+| style               | React.CSSProperties                                |                                 | CSS properties object applied to the button wrapper.                                         |
+| size                | number \| string                                   | 24                              | SVG size.                                                                                    |
+| animationProperties | Partial animation properties object                | defaultProperties \(see below\) | Override only the fields you want; missing fields are merged with defaults.                 |
+| moonColor           | string                                             | white                           | Color of the moon.                                                                           |
+| sunColor            | string                                             | black                           | Color of the sun.                                                                            |
+| aria-label          | string                                             | Toggle dark mode                | Accessible label for the control. Ignored when `aria-labelledby` is provided.               |
+| aria-labelledby     | string                                             |                                 | Links the control to an external label element.                                              |
+| onClick             | \(event: React.MouseEvent<HTMLButtonElement>\)=>void |                                 | Optional button click handler. Call `event.preventDefault()` to prevent toggling on click. |
+
+All valid button attributes (except `children`) are forwarded to the underlying button element.
 
 ### Default Animation Properties
 

example/index.html

@@ -9,6 +9,6 @@
 
   <body style="margin: 0 ;">
     <div id="root"></div>
-    <script src="./index.tsx"></script>
+    <script type="module" src="./index.tsx"></script>
   </body>
 </html>

example/index.tsx

@@ -1,7 +1,6 @@
-import 'react-app-polyfill/ie11';
 import * as React from 'react';
-import * as ReactDOM from 'react-dom';
-import { DarkModeSwitch } from '../.';
+import { createRoot } from 'react-dom/client';
+import { DarkModeSwitch } from '../src';
 
 function arrayN(size: number) {
   return new Array(size).fill(undefined);
@@ -16,7 +15,7 @@ const App = () => {
   };
 
   const addToggle = () => {
-    setToggleAmount(prevValue => prevValue + 1);
+    setToggleAmount((prevValue) => prevValue + 1);
   };
 
   return (
@@ -50,17 +49,24 @@ const App = () => {
         moonColor="red"
         size={30}
       />
-      {arrayN(toggleAmount).map(() => (
+      {arrayN(toggleAmount).map((_, index) => (
         <DarkModeSwitch
+          key={index}
           style={{ marginBottom: '2rem' }}
           checked={isDarkMode}
           onChange={toggleDarkMode}
-          size={Math.floor(Math.random() * 60) + 1}
+          size={Math.floor(Math.random() * 20) + 20}
         />
       ))}
       <button onClick={addToggle}>Add toggle</button>
     </div>
   );
 };
 
-ReactDOM.render(<App />, document.getElementById('root'));
+const rootElement = document.getElementById('root');
+
+if (!rootElement) {
+  throw new Error('Unable to find root element');
+}
+
+createRoot(rootElement).render(<App />);

example/package.json

@@ -1,24 +1,19 @@
 {
   "name": "example",
   "version": "1.0.0",
-  "main": "index.js",
   "license": "MIT",
   "scripts": {
     "start": "parcel index.html",
     "build": "parcel build index.html"
   },
   "dependencies": {
-    "react-app-polyfill": "^1.0.0"
-  },
-  "alias": {
-    "react": "../node_modules/react",
-    "react-dom": "../node_modules/react-dom/profiling",
-    "scheduler/tracing": "../node_modules/scheduler/tracing-profiling"
+    "react": "19.0.0",
+    "react-dom": "19.0.0"
   },
   "devDependencies": {
-    "@types/react": "^16.9.11",
-    "@types/react-dom": "^16.8.4",
-    "parcel": "^1.12.3",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "parcel": "^2.16.4",
     "typescript": "^3.4.5"
   }
 }