run-a-bash-script-from-a-node-script.md

Run A Bash Script From A Node Script

A node script in package.json can reference and run any command or executable script available on our system. This is why we're able to have node scripts that do things like run a linter or start a web server.

We can take this a step further by defining our own scripts to enhance our development and CI environments.

For instance, let's say we have the following bash script (check-stripe) in our project's scripts directory for checking that we are connected to the right Stripe account.

#!/bin/bash

# Expected stripe display name
EXPECTED_STRING="My Online Product"

# Currently connected stripe display name
COMMAND_OUTPUT=$(
	stripe config --list | grep '^display_name' | awk -F'=' '{print $2}' | xargs
)

# Compare the expected string with the command output
if [ "$EXPECTED_STRING" = "$COMMAND_OUTPUT" ]; then
    exit 0
else
    echo "Mismatched Stripe accounts, expected $EXPECTED_STRING, got $COMMAND_OUTPUT."
    exit 1
fi

This script exits with either a successful (0) or failed (1) status. We can use this in our node script to guard another command from getting run.

{
  "scripts": {
    "dev:stripe": "./scripts/check-stripe && stripe listen ..."
  }
}