Adding react-router example #543
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WalkthroughThis pull request introduces a comprehensive React Router example project with a Todo management application. The project is set up using Vite, TypeScript, React, and Fireproof, with a focus on routing, state management, and modern web development practices. The example includes configuration files for various tools like ESLint, PostCSS, Tailwind CSS, and TypeScript, along with a complete implementation of a Todo application with routing between a home page and a todo editor. Changes
Sequence DiagramsequenceDiagram
participant User
participant HomePage
participant TodoRouter
participant TodoEditor
User->>HomePage: Visits home page
HomePage->>TodoRouter: Displays todos
User->>HomePage: Clicks "Create Todo"
HomePage->>TodoEditor: Navigate to new todo
TodoEditor->>TodoEditor: Initialize empty todo
User->>TodoEditor: Fills todo details
TodoEditor->>TodoRouter: Save todo
TodoRouter->>HomePage: Return to home page
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Actionable comments posted: 8
🧹 Nitpick comments (18)
examples/react-router/src/main.tsx (1)
13-17: Consider adding error handling for root element.While the code works, the non-null assertion (
!) could be safer with proper error handling.Consider this safer alternative:
-createRoot(document.getElementById('root')!).render( +const rootElement = document.getElementById('root'); +if (!rootElement) { + throw new Error('Failed to find root element'); +} +createRoot(rootElement).render( <StrictMode> <App /> </StrictMode> );examples/react-router/tsconfig.node.json (1)
15-19: Consider additional type-safety compiler options.While the current linting configuration is good, consider enhancing type safety with these additional flags:
/* Linting */ "strict": true, "noUnusedLocals": true, "noUnusedParameters": true, -"noFallthroughCasesInSwitch": true +"noFallthroughCasesInSwitch": true, +"noImplicitReturns": true, +"noUncheckedIndexedAccess": true🧰 Tools
🪛 Biome (1.9.4)
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examples/react-router/vite.config.ts (2)
7-9: Document the reason for excluding lucide-react from optimization.Please add a comment explaining why
lucide-reactneeds to be excluded from dependency optimization. This helps future maintainers understand the configuration decision.
5-10: Consider adding TypeScript configuration.The project uses TypeScript but the Vite configuration doesn't include explicit TypeScript settings. Consider adding the following configuration for better TypeScript support:
export default defineConfig({ plugins: [react()], optimizeDeps: { exclude: ['lucide-react'], }, + resolve: { + alias: { + '@': '/src' + } + } });examples/react-router/eslint.config.js (2)
13-13: Consider updating ECMAVersion to 2022.The configuration uses ECMAVersion 2020, but newer versions are available. Consider updating to ECMAVersion 2022 for access to newer JavaScript features like class fields and top-level await.
languageOptions: { - ecmaVersion: 2020, + ecmaVersion: 2022, globals: globals.browser, },
20-26: Enhance React-specific linting rules.Consider adding these commonly used React linting rules for better code quality:
rules: { ...reactHooks.configs.recommended.rules, 'react-refresh/only-export-components': [ 'warn', { allowConstantExport: true }, ], + 'react-hooks/exhaustive-deps': 'warn', + 'react-hooks/rules-of-hooks': 'error', },examples/react-router/tsconfig.app.json (3)
10-15: Consider IDE compatibility with TypeScript extensions.While
allowImportingTsExtensionsworks with Vite, it might cause issues with some IDEs. Consider usingpathsmapping instead for better IDE support.{ "compilerOptions": { + "baseUrl": ".", + "paths": { + "@/*": ["src/*"] + }, "moduleResolution": "bundler", - "allowImportingTsExtensions": true, "isolatedModules": true,🧰 Tools
🪛 Biome (1.9.4)
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18-21: Consider additional type-checking options.To further improve type safety, consider adding these compiler options:
{ "compilerOptions": { "strict": true, "noUnusedLocals": true, "noUnusedParameters": true, - "noFallthroughCasesInSwitch": true + "noFallthroughCasesInSwitch": true, + "noImplicitReturns": true, + "noImplicitOverride": true },🧰 Tools
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23-23: Enhance source file management.Consider expanding the configuration to handle test files and type declarations:
{ "compilerOptions": { // ... existing options ... }, - "include": ["src"] + "include": ["src", "src/**/*.ts", "src/**/*.tsx", "tests/**/*.ts", "tests/**/*.tsx"], + "exclude": ["node_modules", "build", "dist"] }🧰 Tools
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examples/react-router/src/types/todo.ts (2)
7-8: Consider using Date type for timestamps.Instead of storing timestamps as strings, consider using the
Datetype for better type safety and date manipulation capabilities.- createdAt: string; - updatedAt: string; + createdAt: Date; + updatedAt: Date;
3-4: Add string length constraints.Consider adding validation constraints for
titleanddescriptionfields to prevent empty or excessively long strings.// Example using branded types for validation: type NonEmptyString = string & { readonly brand: unique symbol } type ValidTitle = NonEmptyString & { maxLength: 100 } type ValidDescription = NonEmptyString & { maxLength: 500 } // Updated interface title: ValidTitle; description: ValidDescription;examples/react-router/src/utils/todoUtils.ts (1)
3-12: Consider memoizing the empty todo factory.For better performance when frequently creating empty todos, consider memoizing the function using
useMemoor implementing a singleton pattern.+import { useMemo } from 'react'; -export const getEmptyTodo = (id?: string): TodoStorage => ({ +export const useEmptyTodo = (id?: string): TodoStorage => useMemo(() => ({ _id: id, title: '', description: '', priority: 'medium', completed: false, createdAt: new Date().toISOString(), updatedAt: new Date().toISOString(), type: 'empty' -}); +}), [id]);Also, if you update the
TodoStorageinterface to useDateobjects, update this function accordingly:- createdAt: new Date().toISOString(), - updatedAt: new Date().toISOString(), + createdAt: new Date(), + updatedAt: new Date(),examples/react-router/src/context/AppContext.tsx (2)
9-9: Improve type safety for context initial value.Consider using
nullinstead ofundefinedfor the initial context value to maintain consistency with the state type.-const AppContext = createContext<AppContextType | undefined>(undefined); +const AppContext = createContext<AppContextType>({ + selectedTodo: null, + setSelectedTodo: () => { + throw new Error('AppContext not initialized'); + }, +});
11-19: Consider using useReducer for complex state management.As the application grows, managing todo state with a simple useState might become complex. Consider using useReducer for better state management and action handling.
+type Action = + | { type: 'SELECT_TODO'; payload: TodoStorage } + | { type: 'CLEAR_SELECTION' }; + +function todoReducer(state: TodoStorage | null, action: Action): TodoStorage | null { + switch (action.type) { + case 'SELECT_TODO': + return action.payload; + case 'CLEAR_SELECTION': + return null; + default: + return state; + } +} export function AppProvider({ children }: { children: ReactNode }) { - const [selectedTodo, setSelectedTodo] = useState<TodoStorage | null>(null); + const [selectedTodo, dispatch] = useReducer(todoReducer, null); + const setSelectedTodo = useCallback((todo: TodoStorage | null) => { + dispatch(todo ? { type: 'SELECT_TODO', payload: todo } : { type: 'CLEAR_SELECTION' }); + }, []); return ( <AppContext.Provider value={{ selectedTodo, setSelectedTodo }}>examples/react-router/src/components/TodoCard.tsx (1)
16-35: Consider memoizing the component for better performance.Since this component is used in a list, wrapping it with React.memo would prevent unnecessary re-renders when other todos change.
-export function TodoCard({ todo }: TodoCardProps) { +export const TodoCard = React.memo(function TodoCard({ todo }: TodoCardProps) { // ... component implementation ... -} +});examples/react-router/src/pages/Home.tsx (2)
38-42: Move priority mapping to constants file.The priority mapping should be moved to a constants file and shared across components.
Consider creating a
src/constants/todo.tsfile:export const PRIORITY_LABELS: Record<string, string> = { '1': 'High', '2': 'Medium', '3': 'Low', } as const;
18-24: Improve type safety in todos grouping.The grouping logic could be more type-safe by using the TodoStorage priority type.
- }, {} as Record<string, TodoStorage[]>); + }, {} as Record<TodoStorage['priority'], TodoStorage[]>);examples/react-router/src/pages/TodoEditor.tsx (1)
52-58: Add form validation and error handling.The form lacks input validation and error handling. Consider using a form library like Formik or react-hook-form.
Example with basic validation:
const [errors, setErrors] = useState<Record<string, string>>({}); const validateTitle = (title: string) => { if (!title.trim()) { setErrors(prev => ({ ...prev, title: 'Title is required' })); return false; } return true; }; const handleUpdate = (field: string, value: string) => { if (validateTitle(value)) { doUpdate({ [field]: value }); } };
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⛔ Files ignored due to path filters (1)
examples/react-router/package-lock.jsonis excluded by!**/package-lock.json
📒 Files selected for processing (21)
examples/react-router/README.md(1 hunks)examples/react-router/eslint.config.js(1 hunks)examples/react-router/index.html(1 hunks)examples/react-router/package.json(1 hunks)examples/react-router/postcss.config.js(1 hunks)examples/react-router/src/App.tsx(1 hunks)examples/react-router/src/components/TodoCard.tsx(1 hunks)examples/react-router/src/config/database.ts(1 hunks)examples/react-router/src/context/AppContext.tsx(1 hunks)examples/react-router/src/index.css(1 hunks)examples/react-router/src/main.tsx(1 hunks)examples/react-router/src/pages/Home.tsx(1 hunks)examples/react-router/src/pages/TodoEditor.tsx(1 hunks)examples/react-router/src/types/todo.ts(1 hunks)examples/react-router/src/utils/todoUtils.ts(1 hunks)examples/react-router/src/vite-env.d.ts(1 hunks)examples/react-router/tailwind.config.js(1 hunks)examples/react-router/tsconfig.app.json(1 hunks)examples/react-router/tsconfig.json(1 hunks)examples/react-router/tsconfig.node.json(1 hunks)examples/react-router/vite.config.ts(1 hunks)
✅ Files skipped from review due to trivial changes (9)
- examples/react-router/src/config/database.ts
- examples/react-router/postcss.config.js
- examples/react-router/src/vite-env.d.ts
- examples/react-router/README.md
- examples/react-router/tailwind.config.js
- examples/react-router/tsconfig.json
- examples/react-router/src/index.css
- examples/react-router/index.html
- examples/react-router/package.json
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examples/react-router/src/main.tsx
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(parse)
[error] 21-22: End of file expected
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🔇 Additional comments (7)
examples/react-router/src/main.tsx (1)
1-5: LGTM! Clean and well-organized imports.The imports follow React best practices with proper separation of concerns.
examples/react-router/tsconfig.node.json (3)
8-13: LGTM! Optimal bundler configuration for Vite.The bundler mode settings are well-configured for a Vite project, enabling proper TypeScript integration with modern module resolution.
🧰 Tools
🪛 Biome (1.9.4)
[error] 8-8: JSON standard does not allow comments.
(parse)
[error] 9-9: End of file expected
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[1, 2](parse)
[error] 9-9: End of file expected
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[1, 2](parse)
[error] 9-9: End of file expected
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[error] 9-9: End of file expected
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[error] 10-10: End of file expected
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[error] 10-10: End of file expected
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[error] 10-10: End of file expected
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[error] 10-10: End of file expected
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[error] 11-11: End of file expected
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[error] 11-11: End of file expected
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[error] 11-11: End of file expected
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[error] 11-11: End of file expected
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[error] 12-12: End of file expected
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[error] 12-12: End of file expected
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[error] 12-12: End of file expected
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[error] 12-12: End of file expected
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[error] 13-13: End of file expected
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[error] 13-13: End of file expected
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[error] 13-13: End of file expected
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21-21: LGTM! Correct include pattern for Vite config.The include pattern correctly targets only the Vite configuration file, as this tsconfig is specifically for the build process.
🧰 Tools
🪛 Biome (1.9.4)
[error] 21-21: End of file expected
Use an array for a sequence of values:
[1, 2](parse)
[error] 21-21: End of file expected
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[error] 21-21: End of file expected
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[error] 21-22: End of file expected
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3-6: Consider aligning TypeScript target with library version.The configuration uses ES2022 as the target but includes ES2023 library features. This mismatch could potentially lead to runtime issues if ES2023 features are used. Consider either:
- Upgrading target to ES2023 to match the library version, or
- Downgrading the library to ES2022 if ES2023 features aren't needed
examples/react-router/eslint.config.js (1)
11-11: Consider including JavaScript files in linting.The
filespattern only includes.tsand.tsxfiles. Consider including.jsand.jsxfiles as well for comprehensive linting coverage:examples/react-router/tsconfig.app.json (2)
9-9: Comments in tsconfig are acceptable.While Biome flags JSON comments as non-standard, they are well-supported in TypeScript configuration files and improve maintainability. No changes needed.
Also applies to: 17-17
🧰 Tools
🪛 Biome (1.9.4)
[error] 9-9: JSON standard does not allow comments.
(parse)
3-7: Verify browser compatibility requirements.The ES2020 target might not support older browsers. Consider adding a browserslist configuration if broader browser support is needed.
Run this command to check if any browserslist configuration exists:
There was a problem hiding this comment.
Actionable comments posted: 1
🧹 Nitpick comments (2)
examples/react-router/src/components/TodoCard.tsx (1)
20-25: Add aria-label for better screen reader support.Consider adding an aria-label to provide more context for screen readers.
<button onClick={() => navigate(`/edit/${todo._id}`)} + aria-label={`Edit todo: ${todo.title}`} className={`w-full text-left p-4 rounded-lg border-2 ${ priorityColors[todo.priority] } hover:shadow-md transition-shadow`}examples/react-router/src/pages/Home.tsx (1)
17-23: Improve type safety for groupedTodos initialization.The initial value type for the reduce operation could be more strictly typed.
- }, {} as Record<string, TodoStorage[]>); + }, { + '1': [] as TodoStorage[], + '2': [] as TodoStorage[], + '3': [] as TodoStorage[], + });
📜 Review details
Configuration used: .coderabbit.yaml
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (5)
examples/react-router/src/App.tsx(1 hunks)examples/react-router/src/components/TodoCard.tsx(1 hunks)examples/react-router/src/main.tsx(1 hunks)examples/react-router/src/pages/Home.tsx(1 hunks)examples/react-router/src/pages/TodoEditor.tsx(1 hunks)
✅ Files skipped from review due to trivial changes (1)
- examples/react-router/src/main.tsx
🚧 Files skipped from review as they are similar to previous changes (1)
- examples/react-router/src/App.tsx
🧰 Additional context used
📓 Learnings (1)
examples/react-router/src/pages/Home.tsx (1)
Learnt from: drmikecrowe
PR: fireproof-storage/fireproof#543
File: examples/react-router/src/pages/Home.tsx:16-16
Timestamp: 2025-01-15T12:53:28.670Z
Learning: Console.log statements are acceptable in example/demo code as they help demonstrate data flow and state management. However, they should still be avoided in production code.
🔇 Additional comments (5)
examples/react-router/src/components/TodoCard.tsx (1)
20-25: LGTM! Good use of semantic HTML and accessibility.The implementation uses a button element with proper keyboard accessibility and styling.
examples/react-router/src/pages/Home.tsx (1)
11-11: LGTM! Good hook consolidation.Excellent use of destructuring to get both
databaseanduseLiveQueryfrom a singleuseFireproofcall.examples/react-router/src/pages/TodoEditor.tsx (3)
41-50: Remove performance monitoring code.As discussed in previous reviews, the performance monitoring code should be removed from the component.
- const [last_ms, setLast] = useState(0); - const milliseconds = performance.now(); - const elapsed = last_ms ? Math.round(milliseconds - last_ms) : 0; - - if (todo.type !== 'todo') { - console.log(elapsed, 'Not rendering, document still loading.', todo); - if (!last_ms) setLast(milliseconds); - } else { - console.log(elapsed, 'Document loaded', todo); - }
54-121: LGTM! Well-structured and accessible form implementation.The form implementation is clean, with proper labels, semantic HTML, and good user experience.
17-17: 🛠️ Refactor suggestionRemove non-null assertion operator.
The non-null assertion on
todoIdis unnecessary since it's already checked.- const emptyWithId = getEmptyTodo(todoId!); + const emptyWithId = getEmptyTodo(todoId);Likely invalid or redundant comment.
Summary by CodeRabbit
New Features
Documentation
Development Setup
Performance