setup pre-commit hook jshint

Question

I recently started a project on github. I\'ve managed to setup automatic testing after each commit using Travis. But now I would like to setup a pre-commit hook with jshint

Answer 1

A similar script to the @igor's one with some improvements:

• color indicators
• no --diff-filter, grep used insead
• help message (git style) to avoid pre-commit call

---

#!/bin/sh
#
# Run JSHint validation before commit.

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

files=$(git diff --cached --name-only | grep .js)
pass=true
totalErrors=0

if [ "$files" != "" ]; then
    for file in ${files}; do
        result=$(jshint ${file})
        if [ "$result" != "" ]; then
            echo "${RED}$result${NC}"
            pass=false
            totalErrors=$((totalErrors+1))
        fi
        echo ""
    done
fi

if $pass; then
    exit 0
else
    echo "${ORANGE}===== ${totalErrors} JSHint Error${NC}"
    echo ""
    echo "${REDBOLD}COMMIT FAILED: Some JavaScript files are invalid. Please fix errors and try committing again.${NC}"
    echo ""
    echo "  (use -n option \"git commit -n -m \" to avoid call pre-commit hook and JSHint check)"
    echo ""
    exit 1
fi