Backend dev boot
It’s helpful to have a standard script for booting up the application in the development environment. Here’s one such example.
{
"dev": "scripts/dev.sh",
"build:generated": "mkdir -p dist/generated && cp -r generated dist/",
}
Where scripts/dev.sh:
#!/bin/sh
scripts/kill_port.sh 3000
yarn build:generated
scripts/ping_docker_services.sh
NODE_ENV=development nest start --watch
Where scripts/kill_port.sh:
#!/bin/sh
echo "Killing any existing service running on port $1..."
lsof -ti:$1 | xargs kill -9
Where scripts/ping_docker_services.sh:
#!/bin/sh
echo 'Checking that Docker services are reachable...'
if curl localhost:9200 2>&1 | grep -q 'Failed to connect to localhost'; then
echo 'Elasticsearch is not reachable. Is Docker running?' && exit 1
fi
# https://stackoverflow.com/a/33246275
if echo PING | nc localhost 6379 2>&1 | grep -q 'Failed to connect to localhost'; then
echo 'Redis is not reachable. Is Docker running?' && exit 1
fi
if curl localhost:5432 2>&1 | grep -q 'Failed to connect to localhost'; then
echo 'PostgreSQL is not reachable. Is Docker running?' && exit 1
fi