A simple precommit hook that checks for the presence of an Ethereum private key in your codebase.

1. Install the package

yarn add -D priv-key-precommit

1. Create a script in your package.json

"scripts": {
  "priv-key-check": "priv-key-precommit"
}

1. Install husky (or a similar pre-commit hook manager)

npx husky-init && yarn

1. Edit the contents of .husky/pre-commit

#!/bin/sh
. "$(dirname "$0")/_/husky.sh"

npm run priv-key-check

1. Try commiting your code. It won't let you commit your code if it finds a private key in your codebase.

❯ git commit -m 'test'

> priv:check
> priv-key-precommit

🚨 Found 1 instance(s) of private keys. Aborting commit.
=> .env.example
husky - pre-commit hook exited with code 1 (error)