// Using ES5 syntax
var el = wp.element.createElement;
var Fragment = wp.element.Fragment;
var PluginSidebar = wp.editPost.PluginSidebar;
var PluginSidebarMoreMenuItem = wp.editPost.PluginSidebarMoreMenuItem;
var registerPlugin = wp.plugins.registerPlugin;

function Component() {
    return el(
        Fragment,
        {},
        el(
            PluginSidebarMoreMenuItem,
            {
                target: 'sidebar-name',
            },
            'My Sidebar'
        ),
        el(
            PluginSidebar,
            {
                name: 'sidebar-name',
                title: 'My Sidebar',
            },
            'Content of the sidebar'
        )
    );
}
registerPlugin( 'plugin-name', {
    icon: 'smiley',
    render: Component,
} );