For those using Grunt, you can run this script with the grunt module grunt-exec (https://github.com/jharding/grunt-exec). I put the script in the same folder where the Gruntfile.js is located and used the following configuration: exec: { reload: { command: './chrome.refresh.sh localhost', stdout: true, stderr: true }

chrome.refresh.sh

#!/bin/bash

# Chrome Refresh
#
# Simple applescript browser reloader for Google Chrome. It will either open a
# new tab with the url passed in as an argument or refresh an existing tab.
#
# Use grunt-exec to include it in your build process
#
# 2-clause BSD license

URL=$1
TS=$(date +"%H:%M:%S")

if [ "$URL" = "" ]; then
  URL="localhost"
fi

if [ "${URL:0:7}" != 'http://' -a "${URL:0:8}" != 'https://' -a "${URL:0:7}" != 'file://' ]; then
  # set as https here if req
  URL="http://${URL}"
fi

# echo "$TS Opening $URL"

/usr/bin/osascript > /dev/null <<__ASCPT__
tell application "Google Chrome"
    set theUrl to "${URL}"

    if (count every window) = 0 then
        make new window
    end if

    set found to false
    set theTabIndex to -1
    repeat with theWindow in every window
        set theTabIndex to 0
        repeat with theTab in every tab of theWindow
            set theTabIndex to theTabIndex + 1
            if theTab's URL starts with theUrl then
                set found to true
                tell theTab to reload
                set theWindow's active tab index to theTabIndex
            end if
        end repeat

        if found then
            exit repeat
        end if
    end repeat

    if not found then
        tell window 1 to make new tab with properties {URL:theUrl}
    end if
end tell
__ASCPT__