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

<div ...attributes>
    <div class="ember-power-select-search">
        <PowerSelect
            @search={{perform this.search.searchTask}}
            @onChange={{this.openSelected}}
            @onClose={{this.onClose}}
            @placeholder="Search site"
            @searchEnabled={{false}}
            @triggerComponent={{component "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>
</div>