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
mapbox-api-geocoding
dspic
xcode11
virtual-column
message-passing
openerp-7
typed-lambda-calculus
hazelcast
compute-capability
byte-order-mark
dialing
reflector
itemtouchhelper
notficationserviceextension
block-comments
font-awesome-6
percy
popbio
telerik-charting
django-authentication
spring-data-jpa-datatables
zeplin
angle
antlr3
cuelang
angular-dart
ngx-editor
read-uncommitted
reportserver
ready