Ghost/ghost/admin/app/components/tabs/tabs.hbs

<div ...attributes>
    <div
        role="tablist"
        class="tab-list"
    >
        {{yield
            (hash
                tab=(
                    component "tabs/tab"
                    selectedIndex=this.selectedIndex
                    onSelect=this.handleSelect
                    onKeyup=this.handleKeyup
                    id=this.addTabId
                    index=this.addTabIndex
                )
            )
        }}
    </div>

    {{yield
        (hash
            tabPanel=(
                component "tabs/tab-panel"
                selectedIndex=this.selectedIndex
                index=this.addPanelIndex
                tabIds=this.tabIds
                forceRender=@forceRender
            )
        )
    }}
</div>