registerFormatType( FORMAT_TYPE_NAME, {
  title: __( '赤色', THEME_NAME ),
  tagName: 'span',
  className: 'red',
  // edit( { isActive, value, onChange } ) {
  //   const onToggle = () => onChange( toggleFormat( value, { type: FORMAT_TYPE_NAME } ) );

    return (
      <Fragment>
        <RichTextShortcut
          type='primary'
          character=''
          onUse={ onToggle }
        />
        <RichTextToolbarButton
          title={ __( '赤字', THEME_NAME ) }
          icon='editor-textcolor'
          onClick={ onToggle }
          isActive={ isActive }
          shortcutType='primary'
          shortcutCharacter=''
        />
      </Fragment>
    );
  },
} );