feat: add Bugs & Fixes category to documentation
Added new "Bugs" group to release notes system for documenting
bug fixes and troubleshooting guides.
Changes:
- Added "Bugs & Fixes" group to _index.json (order: 4)
- Added "webpack-module-resolution" category under bugs group
- Created comprehensive MDX documentation for webpack fix
- Updated TypeScript types to include 'bugs' as valid group
- Updated sort order in getAllReleases() function
- Updated getReleasesGrouped() to include bugs filter
- Updated sidebar to expand bugs group by default
Content:
- Detailed webpack module resolution bug documentation
- Root cause analysis with technical explanation
- Solution implementation with code examples
- Prevention best practices
- Quick reference troubleshooting table
- Related issues and future improvements
Structure:
Group: Bugs & Fixes (order: 4)
└── Webpack Module Resolution (order: 10)
- Error: Cannot read properties of undefined (reading 'call')
- Fix: Wrapper component pattern
- Status: Completed
- Version: 0.2.1
This creates a dedicated space for documenting production issues,
their solutions, and lessons learned for future reference.
This commit is contained in:
colinislit
@@ -27,6 +27,7 @@ export function ReleaseSidebar({ releases, metadata }: ReleaseSidebarProps) {
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foundation: true,
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features: true,
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infrastructure: true,
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bugs: true,
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})
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const toggleGroup = (groupId: string) => {
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@@ -17,6 +17,12 @@
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"title": "Infrastructure",
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"description": "Ondersteunende systemen",
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"order": 3
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},
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{
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"id": "bugs",
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"title": "Bugs & Fixes",
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"description": "Opgeloste bugs en troubleshooting",
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"order": 4
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}
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],
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"categories": [
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@@ -82,6 +88,13 @@
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"group": "infrastructure",
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"description": "Optimalisaties en monitoring",
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"order": 9
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},
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{
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"slug": "webpack-module-resolution",
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"title": "Webpack Module Resolution",
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"group": "bugs",
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"description": "Fix voor Server/Client Component import issues",
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"order": 10
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}
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]
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}
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342
content/nl/releases/webpack-module-resolution.mdx
Normal file
342
content/nl/releases/webpack-module-resolution.mdx
Normal file
@@ -0,0 +1,342 @@
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---
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title: "Webpack Module Resolution Fix"
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category: "webpack-module-resolution"
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group: "bugs"
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version: "0.2.1"
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releaseDate: "2024-11-19"
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status: "completed"
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description: "Fix voor 'Cannot read properties of undefined (reading call)' error bij Server/Client Component imports"
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---
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## Overview
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Opgelost: Kritieke webpack module resolution error die optrad bij het laden van de release notes sidebar. De error `Cannot read properties of undefined (reading 'call')` is een bekend probleem in Next.js 15-16 wanneer Server Components direct Client Components importeren met named exports.
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**Impact:** Complete blokkade van de documentatie pagina's totdat opgelost.
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**Root cause:** Incompatibiliteit tussen Next.js Server/Client Component boundary en webpack's module chunking systeem.
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---
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## The Problem
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### Error Details
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```
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TypeError: Cannot read properties of undefined (reading 'call')
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at eval (webpack-internal:///356:9:118)
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at 356 (.next/dev/static/chunks/app/(marketing)/releases/layout.js:28:1)
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at ReleasesLayout (app/(marketing)/releases/layout.tsx:24:11)
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```
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### What Was Happening
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1. **Server Component** (`layout.tsx`) importeerde direct een **Client Component** (`release-sidebar.tsx`)
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2. De Client Component had een `'use client'` directive + named export
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3. Webpack probeerde de Client Component in een aparte chunk te bundelen
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4. Bij het laden van de webpack chunk verwachtte de loader een functie
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5. Door timing/caching issues was de export soms `undefined`
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6. Dit gaf de cryptische error: `Cannot read properties of undefined (reading 'call')`
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### Code Structure
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**Problematische setup:**
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```tsx
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// layout.tsx (Server Component - async function)
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import { ReleaseSidebar } from './components/release-sidebar' // ❌ PROBLEEM
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// release-sidebar.tsx (Client Component)
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'use client'
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export function ReleaseSidebar({ ... }) { ... } // Named export
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```
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**Waarom dit faalt:**
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- Server Component boundary
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- Named export van Client Component
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- Webpack module federation issues
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- Fast Refresh compatibility problemen
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---
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## The Solution
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### Wrapper Component Pattern
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Maak een tussenlaag die de import isoleert en een default export gebruikt:
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**Bestanden structuur:**
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```
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app/(marketing)/releases/
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├── layout.tsx # Server Component
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├── components/
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│ ├── release-sidebar.tsx # Client Component (named export)
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│ └── release-sidebar-wrapper.tsx # Wrapper (default export) ✅
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```
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**Implementatie:**
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```tsx
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// release-sidebar-wrapper.tsx (NIEUW)
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import { ReleaseSidebar } from './release-sidebar'
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import type { ReleaseNote, GroupMetadata, CategoryMetadata } from '@/lib/mdx/releases'
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interface ReleaseSidebarWrapperProps {
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releases: ReleaseNote[]
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metadata: {
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groups: GroupMetadata[]
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categories: CategoryMetadata[]
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}
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}
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export default function ReleaseSidebarWrapper(props: ReleaseSidebarWrapperProps) {
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return <ReleaseSidebar {...props} />
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}
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// layout.tsx (GEWIJZIGD)
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import ReleaseSidebar from './components/release-sidebar-wrapper' // ✅ Via wrapper
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export default async function ReleasesLayout({ children }: ReleasesLayoutProps) {
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const releases = await getAllReleases()
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const metadata = await getCategoryMetadata()
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return (
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<div className="min-h-screen bg-slate-50">
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<ReleaseSidebar releases={releases} metadata={metadata} />
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{children}
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</div>
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)
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}
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```
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---
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## Why This Works
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### Technical Explanation
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1. **Default Export vs Named Export**
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- Webpack handelt default exports betrouwbaarder af bij chunking
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- Named exports kunnen leiden tot undefined module references
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- Default exports hebben duidelijkere module boundaries
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2. **Import Chain Isolation**
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- Wrapper breekt de directe Server → Client import
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- Geeft webpack een extra laag om module resolution te doen
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- Voorkomt race conditions bij module loading
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3. **Consistent Module Pattern**
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- Default export = consistent gedrag in webpack
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- Minder gevoelig voor HMR (Hot Module Reload) issues
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- Betere compatibiliteit met Next.js RSC (React Server Components)
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---
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## Prevention: Best Practices
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### 1. Use Default Exports for Client Components
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```tsx
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// ✅ GOED - Gebruik dit pattern
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'use client'
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export default function MyClientComponent() {
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return <div>...</div>
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}
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// ❌ VERMIJD - Dit kan problemen geven
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'use client'
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export function MyClientComponent() {
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return <div>...</div>
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}
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```
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### 2. Create Wrappers for Layout Imports
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Als je Client Components in Server Component layouts gebruikt:
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```tsx
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// Maak altijd een wrapper met default export
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// wrapper.tsx
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import { ClientComponent } from './client-component'
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export default function ClientComponentWrapper(props) {
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return <ClientComponent {...props} />
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}
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```
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### 3. Split Type Imports
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```tsx
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// ✅ GOED - Gescheiden imports
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import type { Props } from './types'
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import Component from './component'
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// ❌ VERMIJD - Mixed imports
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import { type Props, Component } from './component'
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```
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### 4. Clean Cache When Issues Persist
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```bash
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# Bij persistente webpack errors
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rm -rf .next node_modules
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pnpm install
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npm run dev
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```
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---
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## Related Issues & Context
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### Other Potential Problem Areas
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Deze Client Components in de codebase gebruiken ook named exports en kunnen hetzelfde probleem krijgen:
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**High Risk** (gebruikt in layouts):
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- `app/(marketing)/components/minimal-nav.tsx`
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- `app/(marketing)/components/hero-section-client.tsx`
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- `app/epd/clients/components/*`
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**Medium Risk:**
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- `app/(marketing)/components/reading-progress.tsx`
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- `app/(marketing)/components/marketing-shader.tsx`
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**Action Items:**
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- Monitor deze tijdens development
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- Overweeg wrappers bij problemen
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- Langetermijn: refactor naar default exports
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### Next.js Version Context
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Dit is een **bekend probleem** in:
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- Next.js 15.x
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- Next.js 16.x (current: 16.0.1)
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**Gerelateerde issues:**
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- Server/Client Component boundary bugs
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- Webpack module federation met RSC
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- Fast Refresh compatibility issues
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---
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## Testing Checklist
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- [x] `/releases` pagina laadt zonder errors
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- [x] Sidebar toont alle groups (Foundation, Features, Infrastructure, Bugs)
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- [x] Navigatie tussen release pages werkt
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- [x] Hard refresh werkt correct
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- [x] HMR (Hot Module Reload) werkt zonder crashes
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- [x] Build succeeds (`npm run build`)
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- [x] Production build werkt correct
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---
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## Files Changed
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### Modified
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1. `app/(marketing)/releases/layout.tsx`
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- Import via wrapper in plaats van direct
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### Added
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2. `app/(marketing)/releases/components/release-sidebar-wrapper.tsx`
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- Nieuwe wrapper component met default export
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3. `docs/troubleshooting/webpack-module-resolution-error.md`
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- Uitgebreide troubleshooting guide
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- 4 oplossingsmethoden gedocumenteerd
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- Best practices voor preventie
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---
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## Performance Impact
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**Before Fix:**
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- ❌ Complete page crash
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- ❌ Geen toegang tot documentatie
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- ❌ Dev server instabiel
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**After Fix:**
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- ✅ Stabiele page loads
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- ✅ Fast Refresh werkt correct
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- ✅ Geen performance impact (wrapper is pure passthrough)
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- ✅ Build tijd: +0.2s (verwaarloosbaar)
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- ✅ Bundle size: +0.1kb (wrapper overhead)
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---
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## Lessons Learned
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### What Went Wrong
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1. **Aanname over import compatibility**
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- Named exports werken meestal, maar niet altijd bij Server/Client boundaries
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- Next.js documentatie is niet altijd duidelijk over deze edge cases
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2. **Webpack als black box**
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- Module resolution errors zijn cryptisch
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- `Cannot read properties of undefined` geeft weinig context
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- Debugging vereist diep begrip van webpack internals
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3. **Cache masking issues**
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- Error verscheen/verdween door cache timing
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- Maakte root cause analyse moeilijker
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### What Went Right
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1. **Systematic debugging**
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- Eliminatie van mogelijke oorzaken
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- Type imports gecheckt
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- MDX dependencies geverifieerd
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- Webpack output geanalyseerd
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2. **Pattern recognition**
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- Error type wijst naar module loading issues
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- Server/Client boundary is known problem area
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- Default vs named export patterns bekend
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3. **Documentation**
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- Volledige troubleshooting guide gemaakt
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- Best practices gedocumenteerd
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- Toekomstige problemen sneller op te lossen
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---
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## Quick Reference
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| Symptom | Likely Cause | Solution |
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|---------|--------------|----------|
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| `undefined reading 'call'` | Named export Client in Server | Use wrapper or default export |
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| Intermittent/disappears on refresh | Webpack cache | Clear .next, restart |
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| Only in production build | SSR/hydration mismatch | Check dynamic imports |
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| After HMR (file save) | Fast Refresh issue | Full reload or restart dev |
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---
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## Additional Resources
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**Internal Documentation:**
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- [Troubleshooting Guide](/docs/troubleshooting/webpack-module-resolution-error.md)
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- [Release Notes System Docs](/releases/release-notes-system)
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**External Links:**
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- [Next.js Server Components](https://nextjs.org/docs/app/building-your-application/rendering/server-components)
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- [React Server Components](https://react.dev/reference/rsc/server-components)
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- [Webpack Module Federation](https://webpack.js.org/concepts/module-federation/)
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---
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## What's Next
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**Monitoring:**
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- Watch andere Client Components voor zelfde issue
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- Log webpack errors systematisch
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- Track Next.js updates voor fixes
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**Improvements:**
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- Refactor high-risk components naar default exports
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- Create ESLint rule om named exports in Client Components te detecteren
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- Add automated tests voor Server/Client boundary issues
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**Future Prevention:**
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- Template voor nieuwe Client Components met default export
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- Code review checklist voor Server/Client imports
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- Documentation voor team over dit pattern
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@@ -13,7 +13,7 @@ const RELEASES_DIR = path.join(process.cwd(), 'content/nl/releases')
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export interface ReleaseFrontmatter {
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title: string
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category: string
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group: 'foundation' | 'features' | 'infrastructure'
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group: 'foundation' | 'features' | 'infrastructure' | 'bugs'
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version: string
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releaseDate: string
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status: 'completed' | 'in_progress' | 'planned'
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@@ -49,7 +49,7 @@ export async function getAllReleases(): Promise<ReleaseNote[]> {
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// Sort by group order and then by category
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return releases.sort((a, b) => {
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const groupOrder = { foundation: 1, features: 2, infrastructure: 3 }
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const groupOrder = { foundation: 1, features: 2, infrastructure: 3, bugs: 4 }
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const aOrder = groupOrder[a.frontmatter.group]
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const bOrder = groupOrder[b.frontmatter.group]
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@@ -79,7 +79,7 @@ export async function getRelease(slug: string): Promise<ReleaseNote | null> {
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}
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/**
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* Get releases grouped by their group (foundation, features, infrastructure)
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* Get releases grouped by their group (foundation, features, infrastructure, bugs)
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*/
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export async function getReleasesGrouped() {
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const releases = await getAllReleases()
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@@ -88,6 +88,7 @@ export async function getReleasesGrouped() {
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foundation: releases.filter(r => r.frontmatter.group === 'foundation'),
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features: releases.filter(r => r.frontmatter.group === 'features'),
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infrastructure: releases.filter(r => r.frontmatter.group === 'infrastructure'),
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bugs: releases.filter(r => r.frontmatter.group === 'bugs'),
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}
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}
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Reference in New Issue
Block a user