I build a PWA using Angular 9 which can be seen here and I implemented an beforeinstallprompt event handler so as to offer the user a way to install the PWA as
aws-systems-manager
window-messages
expo-camera
sna
chruby
palette
devops
valentina-studio
preserve
nearprotocol
default-initialization
beforeupdate
ffmpeg-php
content-disposition
8thwall-web
receipt-validation
password-autofill
docutils
coturn
asp.net-core-testhost
react-native-permissions
brightscript
apple-tv
amazon-rds">amazon-rds
openpyxl
get-cli
c-str
psutil
hadoop
typedef
amazon-rds