fix(types): type definitions for slidesEl, slidesGrid, and slidesSizesGrid (#7768)

Author: davindev

src/types/swiper-class.d.ts

@@ -59,6 +59,11 @@ interface Swiper extends SwiperClass<SwiperEvents> {
    */
   wrapperEl: HTMLElement;
 
+  /**
+   * Wrapper HTML element
+   */
+  slidesEl: HTMLElement;
+
   /**
    * Array of slides HTML elements. To get specific slide HTMLElement use `swiper.slides[1]`
    */
@@ -116,6 +121,16 @@ interface Swiper extends SwiperClass<SwiperEvents> {
    */
   snapGrid: number[];
 
+  /**
+   * Slides grid
+   */
+  slidesGrid: number[];
+
+  /**
+   * Array of widths for slides
+   */
+  slidesSizesGrid: number[];
+
   /**
    * `true` if slider on most "left"/"top" position
    */