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
go-xorm
listbox-control
asp.net-mvc-2
skype
ziggy
rubyinstaller
character-properties
matlab-compiler
security-scoped-bookmarks
unit-of-work
graphical-logo
java-security
gac-msil
gulp-data
withcontext
django-permissions
reportgenerator
canny-operator
url-fragment
ifc
chisel
datasource
corewlan
controlbox
pact-node
chancejs
haskell-warp
step
kora
precompiled-headers
