A featureless JS-only pipe-to-browser utility like scat sans deps useful for running client side unit tests a-la testling for example. In effect equivalent to:
printf 'HTTP/1.1 200 OK\r\n\n%s\n' "<script>console.log('coucou');</script>" | nc -c -l 1234
Download from the npm registry:
# Add to package.json
npm install kpow --save-dev
Fires up a transient server on a random port with the passed in file attached to an empty HTML page, then attempts to launch a browser prewiew using -c in one go.
Override the default open(1) command:
npx kpow -c xdg-open file.js
Be piping:
echo "alert('coucou')" | cat - file.js | npx kpow