added notes for PWA
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imcmjha
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@ -13,3 +13,8 @@ This will contain all my notes.
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- Errors should never pass silently, unless explicitly silenced.
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- Now is better than never. But never is often better than right now.
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- If the implementation is hard to explain, it is bad idea.
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## Some notes
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- [Git](git.md)
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- [mongo](mongo.md)
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- [PWA](pwa.md)
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@ -0,0 +1,196 @@
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# PWA (Progressive Web app)
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## The manifest file
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```
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{
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"name": "Full app name",
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"short_name": "app short name",
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"theme_color": "#",
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"background_color": "#",
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"description": "description about app",
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"dir": "ltr",
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"display": "standalone",
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"scope": "/",
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"start_url": "/",
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"icons": [
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{
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"src": "assets/icons/icon-72x72.png",
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"sizes": "72x72",
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"type": "image/png"
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},
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{
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"src": "assets/icons/icon-96x96.png",
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"sizes": "96x96",
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"type": "image/png"
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},
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{
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"src": "assets/icons/icon-128x128.png",
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"sizes": "128x128",
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"type": "image/png"
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},
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{
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"src": "assets/icons/icon-144x144.png",
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"sizes": "144x144",
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"type": "image/png"
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},
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{
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"src": "assets/icons/icon-152x152.png",
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"sizes": "152x152",
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"type": "image/png"
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},
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{
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"src": "assets/icons/icon-192x192.png",
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"sizes": "192x192",
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"type": "image/png"
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},
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{
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"src": "assets/icons/icon-384x384.png",
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"sizes": "384x384",
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"type": "image/png"
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},
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{
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"src": "assets/icons/icon-512x512.png",
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"sizes": "512x512",
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"type": "image/png"
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}
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]
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}
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```
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## For Apple devices
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```
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<meta name="Title" content="Title of app" />
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<meta name="mobile-web-app-capable" content="yes" />
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<meta name="apple-mobile-web-app-capable" content="yes" />
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<meta name="application-name" content="name of application" />
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<meta name="apple-mobile-web-app-status-bar-style" content="#007db2" />
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<meta name="apple-mobile-web-app-title" content="title of app" />
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<meta name="msapplication-starturl" content="/" />
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<meta name="theme-color" content="#1976d2" />
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<meta
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name="Description"
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content="Description of the app"
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/>
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<link rel="icon" type="image/x-icon" href="favicon.ico" />
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<link
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rel="icon"
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sizes="96x96"
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href="assets/icons/icon-96x96.png"
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type="image/png"
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/>
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<link
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rel="apple-touch-icon"
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sizes="192x192"
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href="assets/icons/apple-touch-icon.png"
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/>
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```
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## Strategy
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```
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{
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"$schema": "path to schema.json",
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"index": "/index.html",
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"assetGroups": [
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{
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"name": "app",
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"installMode": "prefetch",
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"resources": {
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"files": [
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"/favicon.ico",
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"/index.html",
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"/manifest.json",
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"/*.css",
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"/*.js"
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],
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"urls": []
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}
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},
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{
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"name": "assets",
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"installMode": "lazy",
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"updateMode": "prefetch",
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"resources": {
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"files": [
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"/assets/**",
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"/*.(eot|svg|cur|jpg|png|webp|gif|otf|ttf|woff|woff2|ani)"
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]
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}
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}
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],
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"dataGroups": [
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{
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"name": "apis",
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"urls": [
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"urls to be stored to imporve performance of the app"
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],
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"cacheConfig": {
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"maxSize": 3,
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"maxAge": "1d",
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"timeout": "5s",
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"strategy": "performance"
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}
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},
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{
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"name": "quick-load",
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"urls": [
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"urls to be stored to get the latest value"
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],
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"cacheConfig": {
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"maxSize": 2,
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"maxAge": "5m",
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"timeout": "1m",
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"strategy": "performance"
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}
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}
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]
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}
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```
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## Service Worker Registration
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```
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ServiceWorkerModule.register('path to service worker file', {
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enabled: <true/false/condition to return truthy>,
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registrationStrategy: 'registerImmediately',
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})
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```
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## Show app version (for user and debug process)
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```
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import { version } from 'path to package.json';
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```
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## Custom installation
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### Javascript
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```
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let promptEvent;
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window.addEventListener('beforeinstallprompt', (event) => {
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this.promptEvent = event;
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});
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// On User Click to install
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this.promptEvent.prompt();
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this.promptEvent.userChoice.then((choiceResult) => {
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if (choiceResult.outcome === 'accepted') {
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this.promptEvent = null;
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}
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});
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```
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## Force app update
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```
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if ('serviceWorker' in navigator) {
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navigator.serviceWorker
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.getRegistrations()
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.then((registrations: ServiceWorkerRegistration[]) => {
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for (const registration of registrations) {
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registration.update();
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}
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});
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}
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```
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## Show user if app is online
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```
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navigator.onLine
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```
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