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
mysqlimport
iso8583-1993
ej2-gantt
viewpropertyanimator
powermockito
random-time-generation
php-java-bridge
backbone.js
sharepoint-rest-api
google-cloud-code
r-lib-cpp11
google-developer-tools
binary-reproducibility
containskey
java-home
tx
angularjs
image-gallery
spring-hateoas
interaction-plot
wordpress-login
windows-nt
stdmap
settings
indexer
frame-grab
cri-o
constants
c#-3.0
hashicorp-packer