Improve some null types for strictNullChecks

src/ol/format/KML.js

@@ -195,13 +195,13 @@ const KML_SERIALIZERS = makeStructureNS(NAMESPACE_URIS, {
 let DEFAULT_COLOR;
 
 /**
- * @type {Fill}
+ * @type {Fill|null}
  */
 let DEFAULT_FILL_STYLE = null;
 
 /**
  * Get the default fill style (or null if not yet set).
- * @return {Fill} The default fill style.
+ * @return {Fill|null} The default fill style.
  */
 export function getDefaultFillStyle() {
   return DEFAULT_FILL_STYLE;
@@ -233,13 +233,13 @@ let DEFAULT_IMAGE_STYLE_SIZE;
 let DEFAULT_IMAGE_STYLE_SRC;
 
 /**
- * @type {import("../style/Image.js").default}
+ * @type {import("../style/Image.js").default|null}
  */
 let DEFAULT_IMAGE_STYLE = null;
 
 /**
  * Get the default image style (or null if not yet set).
- * @return {import("../style/Image.js").default} The default image style.
+ * @return {import("../style/Image.js").default|null} The default image style.
  */
 export function getDefaultImageStyle() {
   return DEFAULT_IMAGE_STYLE;
@@ -251,13 +251,13 @@ export function getDefaultImageStyle() {
 let DEFAULT_NO_IMAGE_STYLE;
 
 /**
- * @type {Stroke}
+ * @type {Stroke|null}
  */
 let DEFAULT_STROKE_STYLE = null;
 
 /**
  * Get the default stroke style (or null if not yet set).
- * @return {Stroke} The default stroke style.
+ * @return {Stroke|null} The default stroke style.
  */
 export function getDefaultStrokeStyle() {
   return DEFAULT_STROKE_STYLE;
@@ -269,39 +269,39 @@ export function getDefaultStrokeStyle() {
 let DEFAULT_TEXT_STROKE_STYLE;
 
 /**
- * @type {Text}
+ * @type {Text|null}
  */
 let DEFAULT_TEXT_STYLE = null;
 
 /**
  * Get the default text style (or null if not yet set).
- * @return {Text} The default text style.
+ * @return {Text|null} The default text style.
  */
 export function getDefaultTextStyle() {
   return DEFAULT_TEXT_STYLE;
 }
 
 /**
- * @type {Style}
+ * @type {Style|null}
  */
 let DEFAULT_STYLE = null;
 
 /**
  * Get the default style (or null if not yet set).
- * @return {Style} The default style.
+ * @return {Style|null} The default style.
  */
 export function getDefaultStyle() {
   return DEFAULT_STYLE;
 }
 
 /**
- * @type {Array<Style>}
+ * @type {Array<Style>|null}
  */
 let DEFAULT_STYLE_ARRAY = null;
 
 /**
  * Get the default style array (or null if not yet set).
- * @return {Array<Style>} The default style.
+ * @return {Array<Style>|null} The default style.
  */
 export function getDefaultStyleArray() {
   return DEFAULT_STYLE_ARRAY;

src/ol/format/WKB.js

@@ -62,7 +62,7 @@ class WkbReader {
     this.isLittleEndian_ = false;
     this.hasZ_ = false;
     this.hasM_ = false;
-    /** @type {number} */
+    /** @type {number|null} */
     this.srid_ = null;
 
     this.layout_ = GeometryLayout.XY;
@@ -356,7 +356,7 @@ class WkbReader {
   }
 
   /**
-   * @return {number} SRID in the EWKB. `null` if not defined.
+   * @return {number|null} SRID in the EWKB. `null` if not defined.
    */
   getSrid() {
     return this.srid_;