Add Run A Bash Script From A Node Script as a JavaScript TIL

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
 
-_1392 TILs and counting..._
+_1393 TILs and counting..._
 
 ---
 
@@ -488,6 +488,7 @@ _1392 TILs and counting..._
 - [Reach Into An Object For Nested Data With Get](javascript/reach-into-an-object-for-nested-data-with-get.md)
 - [Render An Array Of Elements With React 16](javascript/render-an-array-of-elements-with-react-16.md)
 - [Resolve And Pass Multiple Values From A Then](javascript/resolve-and-pass-multiple-values-from-a-then.md)
+- [Run A Bash Script From A Node Script](javascript/run-a-bash-script-from-a-node-script.md)
 - [Run Multiple Node Scripts Concurrently](javascript/run-multiple-node-scripts-concurrently.md)
 - [Running ES6 Specs With Mocha](javascript/running-es6-specs-with-mocha.md)
 - [Scoping Variables With A Block Statement](javascript/scoping-variables-with-a-block-statement.md)

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

@@ -0,0 +1,43 @@
+# 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.
+
+```bash
+#!/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.
+
+```json
+{
+  "scripts": {
+    "dev:stripe": "./scripts/check-stripe && stripe listen ..."
+  }
+}
+```