A git pre-commit to check js files up for commit against JSHint. If there are errors, the commit is cancelled.

lint.pre-commit

#!/bin/sh
# JSHint Pre-Commit
# Place this in your .git/hooks/pre-commit directory and rename to `pre-commit`
# expects jshint to be installed in your projects node_modules directory

EXIT_CODE=0
COLOR_RED="\x1B[31m"
COLOR_GREEN="\x1B[32m"
COLOR_NONE="\x1B[0m"

repo=$( git rev-parse --show-toplevel )
jshint=${repo}/node_modules/jshint/bin/hint

for file in $( exec git diff-index --cached --name-only HEAD ); do
    if [[ $file == *".js"* ]]; then
        status=$( exec git status --porcelain $file )

        if [[ $status != D* ]]; then
            # ${jshint} ${repo}/${file} >/dev/null 2>&1
            ${jshint} ${repo}/${file}
            EXIT_CODE=$((${EXIT_CODE} + $?))
        fi
    fi
done

echo ""
if [[ ${EXIT_CODE} -ne 0 ]]; then
    echo "${COLOR_RED}✘ JSHINT detected syntax problems.${COLOR_NONE}"
else
    echo "${COLOR_GREEN}✔ JSHINT detected no errors.${COLOR_NONE}"
fi

exit $((${EXIT_CODE}))