{{#let (arg-or-default @tagName "div") as |tagName|}}
  {{#if (eq tagName "div")}}
    <div class={{class-names componentName="EuiFlexItem" grow=@grow}} ...attributes>
      {{yield}}
    </div>
  {{else if (eq tagName "span")}}
    <span class={{class-names componentName="EuiFlexItem" grow=@grow}} ...attributes>
      {{yield}}
    </span>
  {{else}}
    {{#let (element tagName) as |Element|}}
      <Element class={{class-names componentName="EuiFlexItem" grow=@grow}} ...attributes>
        {{yield}}
      </Element>
    {{/let}}
  {{/if}}
{{/let}}