Remove check for context.setLineDash

src/ol/style/RegularShape.js

@@ -39,7 +39,7 @@ import {
  * @property {import("../colorlike.js").ColorLike} [strokeStyle] StrokeStyle.
  * @property {number} strokeWidth StrokeWidth.
  * @property {number} size Size.
- * @property {Array<number>} lineDash LineDash.
+ * @property {Array<number>|null} lineDash LineDash.
  * @property {number} lineDashOffset LineDashOffset.
  * @property {CanvasLineJoin} lineJoin LineJoin.
  * @property {number} miterLimit MiterLimit.
@@ -517,7 +517,7 @@ class RegularShape extends ImageStyle {
     if (this.stroke_) {
       context.strokeStyle = renderOptions.strokeStyle;
       context.lineWidth = renderOptions.strokeWidth;
-      if (context.setLineDash && renderOptions.lineDash) {
+      if (renderOptions.lineDash) {
         context.setLineDash(renderOptions.lineDash);
         context.lineDashOffset = renderOptions.lineDashOffset;
       }

src/ol/style/Stroke.js

@@ -10,8 +10,6 @@
  * @property {CanvasLineCap} [lineCap='round'] Line cap style: `butt`, `round`, or `square`.
  * @property {CanvasLineJoin} [lineJoin='round'] Line join style: `bevel`, `round`, or `miter`.
  * @property {Array<number>} [lineDash] Line dash pattern. Default is `null` (no dash).
- * Please note that Internet Explorer 10 and lower do not support the `setLineDash` method on
- * the `CanvasRenderingContext2D` and therefore this option will have no visual effect in these browsers.
  * @property {number} [lineDashOffset=0] Line dash offset.
  * @property {number} [miterLimit=10] Miter limit.
  * @property {number} [width] Width.
@@ -46,7 +44,7 @@ class Stroke {
 
     /**
      * @private
-     * @type {Array<number>}
+     * @type {Array<number>|null}
      */
     this.lineDash_ = options.lineDash !== undefined ? options.lineDash : null;
 
@@ -113,7 +111,7 @@ class Stroke {
 
   /**
    * Get the line dash style for the stroke.
-   * @return {Array<number>} Line dash.
+   * @return {Array<number>|null} Line dash.
    * @api
    */
   getLineDash() {
@@ -179,13 +177,7 @@ class Stroke {
   /**
    * Set the line dash.
    *
-   * Please note that Internet Explorer 10 and lower [do not support][mdn] the
-   * `setLineDash` method on the `CanvasRenderingContext2D` and therefore this
-   * property will have no visual effect in these browsers.
-   *
-   * [mdn]: https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/setLineDash#Browser_compatibility
-   *
-   * @param {Array<number>} lineDash Line dash.
+   * @param {Array<number>|null} lineDash Line dash.
    * @api
    */
   setLineDash(lineDash) {