Craft\MinimeeService::minifyJsAsset PHP Method

    protected function minifyJsAsset($asset)
    {
        $contents = $asset->contents;
        if ($this->settings->minifyJsEnabled) {
            $contents = \JSMin::minify($asset->contents);
        }
        // Play nice with others by ensuring a semicolon at eof
        if (substr($contents, -1) != ';') {
            $contents .= ';';
        }
        return $contents;
    }