npm i psi-local-cli -g

psi-local --port 8080
# will test http://localhost:8080 via ngrok tunnel

psi-local --port 8080 --route /signup
# will test http://localhost:8080/signup via ngrok tunnel

psi-local --port 8080 --nopsi
# will just create tunnel for http://localhost:8080 without calling PSI
# you can manually copy-paste generated ngrok url to PSI web interface

psi-local --port 8080 --strategy mobile
# will test http://localhost:8080 via ngrok tunnel and pass `strategy` to psi-cli