time-npm-start

#!/usr/bin/env bash
# time-npm-start

URL="http://localhost:3000/"

spinner() {
    I=$(( (I+1) %4 ))
    printf "\r${SPIN:$I:1} $1"
}

loaded() {
    if $(curl -s -m 0.1 $URL | grep -q "</html>"); then
        LOADED=true
    fi
}

START=$(date +%s)
LOADED=false
SPIN='-\|/'
I=0

# Start dev server
npm run start > /dev/null 2>&1 &

while ! "$LOADED" ; do
    spinner "Starting server..."
    loaded
    sleep 0.1
done

END=$(date +%s)

# Kill dev server
pkill -9 -f node 2> /dev/null
echo -e "Server killed\n"

echo "Time started: $(date +"%Y-%m-%d %H:%M:%S" -d @$START)"
echo -e "Time completed: $(date +"%Y-%m-%d %H:%M:%S" -d @$END)\n"

SECONDS=$((END-START))
echo "Duration in seconds: ${SECONDS}s"

if [ $SECONDS -ge 60 ]; then
    MINUTES=$(echo "scale=1; $SECONDS/60" | bc -l)
    echo "Duration in minutes: ${MINUTES}m"
fi