git pre-commit hook for checking for debug code you don't want committed. Basically add a comment that says // @debug or @debug or @debug -- and this will not let you commit that line.

pre-commit

#!/bin/sh

disallowed="@debug"

RED='\033[0;31m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

git diff --cached --name-status | while read x file; do
        if [ "$x" == 'D' ]; then continue; fi
        for word in $disallowed
        do
            if grep -Ei $word $file > /dev/null; then
                echo "BRO! You left ${RED}DEBUG CODE${NC} in your shit. I'm not letting you commit this. Go clean your room: Found references to debug code in file: ${YELLOW}${file}${NC}\n"
                exit 1
            fi
        done
done || exit $?