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feat: add development Service Worker for testing image caching

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With injectManifest strategy, the Service Worker needs to be built, so it's
not available in dev mode. To enable testing image caching in dev, we now:
1. Created public/sw-dev.js - a simplified SW that only handles image caching
2. Updated registration to use sw-dev.js in dev mode, sw.js in production
3. Dev SW uses simple cache-first strategy for images

This allows testing image caching in development without needing a build.
This commit is contained in:
Gigi
2025-10-31 01:10:20 +01:00
parent 851cecf18c
commit cfa6dc4400
3 changed files with 66 additions and 12 deletions
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22
src/main.tsx
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@@ -39,34 +39,34 @@ if ('serviceWorker' in navigator) {
}
// Not registered yet, try to register
// In dev mode, check if SW file exists and has correct MIME type before registering
// In dev mode, use the dev Service Worker for testing
if (import.meta.env.DEV) {
const devSwPath = '/sw-dev.js'
console.log('[sw-registration] Dev mode - using development Service Worker:', devSwPath)
try {
const response = await fetch(swPath)
// Check if dev SW exists
const response = await fetch(devSwPath)
const contentType = response.headers.get('content-type') || ''
const isJavaScript = contentType.includes('javascript') || contentType.includes('application/javascript')
console.log('[sw-registration] Dev mode - checking SW file:', {
console.log('[sw-registration] Dev SW check:', {
status: response.status,
contentType,
isJavaScript,
isHTML: contentType.includes('text/html')
isJavaScript
})
if (response.ok && isJavaScript) {
console.log('[sw-registration] Service Worker file available in dev mode, proceeding with registration')
return await navigator.serviceWorker.register(swPath)
console.log('[sw-registration] Development Service Worker available, proceeding with registration')
return await navigator.serviceWorker.register(devSwPath, { scope: '/' })
} else {
console.warn('[sw-registration] ⚠️ Service Worker file not available in dev mode:', {
console.warn('[sw-registration] ⚠️ Development Service Worker not available:', {
status: response.status,
contentType
})
console.warn('[sw-registration] Image caching will not work in dev mode - test in production build')
return null
}
} catch (err) {
console.warn('[sw-registration] ⚠️ Could not check Service Worker file in dev mode:', err)
console.warn('[sw-registration] Image caching will not work in dev mode - test in production build')
console.warn('[sw-registration] ⚠️ Could not load development Service Worker:', err)
return null
}
} else {