a simple script for pre-commit hook that checks if I forgot to remove .only from a test case

pre-commit.sh

#!/bin/bash
# pre-commit.sh
for file in $(git diff --cached --name-only | grep -E '\.(js|jsx|ts|tsx)$'); do
  if grep -q ".only(" "$file"; then
    echo "Error: '.only(' found in $file"
    exit 1
  fi
done
exit 0