Ghost/ghost/admin/app/components/gh-search-input.hbs

<div ...attributes>
    <PowerSelect
        class="ember-power-select-search"
        @search={{perform this.searchTask}}
        @onChange={{this.openSelected}}
        @onClose={{this.onClose}}
        @placeholder="Search site"
        @searchEnabled={{false}}
        @triggerComponent="gh-input-with-select/trigger"
        @renderInPlace={{true}}
        @loadingMessage="Loading"
        @extra={{hash
            autofocus=true
            inputType="search"
            inputIcon="search"
            inputIconClass="gh-nav-search-icon"
        }}
        as |name select|
    >
        {{highlighted-text name.title select.searchText}}
    </PowerSelect>
</div>