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
flutter-devtools
usage-tracking
formset
jestjs
wagtail-apiv2
format-string
count-unique
abap-adt
cygwin
sentimentr
ghcr
osrm
mikeio
asmack
minima
vcr
airflow-scheduler
reentrantreadwritelock
jmockit
spring-shell
spring-projections
memorystream
bitconverter
windowgroup
oracle-apps
jaeger
routerlinkactive
spriteview
prism-7
dtexec