Remove the useless (and trouble makers) commas on sublime text

json_trailling_coma.py

##
## THIS FILE IS NO LONGER UPDATED: SEE https://github.com/math2001/JSONComma
##

import sublime
import sublime_plugin

class JsonFixerCommand(sublime_plugin.TextCommand):

    """
    fix json trailing comma.
    """

    def run(self, edit):
        v = self.view
        if 'json' not in v.settings().get('syntax').lower():
            return
        regions = v.find_all(r',\s*[\]\}]')
        v.selection = v.sel()
        initial_colrows = []
        for region in v.selection:
            initial_colrows.append(v.rowcol(region.begin()))
        v.selection.clear()
        for region in regions:
            if 'punctuation' not in v.scope_name(region.begin()):
                continue
            v.selection.add(region)
        v.run_command('move', {"by": "characters", "forward": False})
        v.run_command('right_delete')
        v.selection.clear()

        for col, row in initial_colrows:
            line_length = len(v.substr(v.line(sublime.Region(v.text_point(col, 0)))))
            if row > line_length:
                row = line_length
            v.selection.add(sublime.Region(v.text_point(col, row)))

        sublime.status_message('You\'re welcome mate!')

class JsonFixerListener(sublime_plugin.EventListener):

    def on_pre_save(self, view):
        view.run_command('json_fixer')