Replace instanceof checks with other logic

2018-10-05 16:16:51 +02:00
parent 96e99e481e
commit 9163558511
40 changed files with 232 additions and 268 deletions
--- a/src/ol/ImageTile.js
+++ b/src/ol/ImageTile.js
@@ -109,8 +109,8 @@ class ImageTile extends Tile {
   * @private
   */
  handleImageLoad_() {
-    if (this.image_ instanceof HTMLImageElement &&
-      this.image_.naturalWidth && this.image_.naturalHeight) {
+    const image = /** @type {HTMLImageElement} */ (this.image_);
+    if (image.naturalWidth && image.naturalHeight) {
      this.state = TileState.LOADED;
    } else {
      this.state = TileState.EMPTY;