A pre-commit hook to stop you from doing silly things

pre-commit.sh

#!/bin/bash
# Requires the `dialog` package to be installed on linux machines
# Only supported on Mac OSX and Linux

warningString="You're on master. Are you sure you want to commit your changes here?"
yesResponse="Alright. Here we go, I guess."
noResponse="Cool. Let's keep it safe. Switch to a different branch before you rush to commit next time, okay?"

macDialogScript="button returned of (display dialog \"$warningString\" with icon caution buttons {'No', 'Yes'})"

branch=`git rev-parse --abbrev-ref HEAD`
if [ $branch = 'master' ]; then
    if [[ "$OSTYPE" == "linux-gnu" ]]; then
        if [ dialog --title "Warning" --yesno "$warningString" 8 30 ]
        then
            echo $yesResponse
        else
            echo $noResponse
            exit 1
        fi
    # Mac OSX
    elif [[ "$OSTYPE" == "darwin"* ]]; then
        if [ `osascript -e "$macDialogScript"` = "Yes" ]; then
            echo $yesResponse
        else
            echo $noResponse
            exit 1
        fi
    fi
fi
 
# Run tests
npm test