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
struts2
single-file-generator
cortex-m3
filepond
cpack
cat
mysql-5.0
top-n
java-record
app-certification-kit
laravel-translatable
quagga
keyvaluepair
geokit
soto
activecollab
boringssl
nul
method-invocation
country
implicitwait
xlsb
stacked-area-chart
ntlm
tee
check
zipexception
quicktype-core
x86-16
slimselect
