pre-commit.example

#!/bin/sh
#
# The hook should exit with non-zero status after issuing an appropriate message if it wants to stop the commit.

# Installation:
# - copy this file to ./.git/hooks
# - rename it by removing the extension
# - make executable by $chmod +x pre-commit

# Steps:
#
#   * Use prettier
#   * Lint (with fix)
#

# Set working directory to project root
WORKDIR=$PWD
PROJECTDIR=src

# Determine if any JS files changed
cd $WORKDIR
JSCHANGES=$(git diff --cached --name-only --diff-filter=ACM -- "$PROJECTDIR/**/*.js" "$PROJECTDIR/**/*.js" "!($PROJECTROOT/node_modules)" | tr '\n' ' ')
if [ ! -z "$JSCHANGES" ]
then

    # Prettify all staged .js files
    cd $WORKDIR/$PROJECTDIR
    npm run prettier

    # Add back the modified/prettified files to staging
    cd $WORKDIR
    git add -A $PROJECTDIR
fi

# Enter app core directory
cd $WORKDIR/$PROJECTDIR

# Lint and abort if fails
npm run lint:fix
RESULT=$?
if [ "$RESULT" -ne 0 ]
then
    echo Linting failed. Please resolve. Not committing.
    exit 1
fi

exit 0