Merge pull request #771 from atom-minimap/null-bugs

Fix strange null bugs

Author: aminya

lib/minimap-element.js

@@ -429,7 +429,12 @@ class MinimapElement {
     if (minimaps.length) {
       Array.prototype.forEach.call(minimaps, (el) => {
         el.destroy()
-        container.removeChild(el)
+        try {
+          container.removeChild(el)
+        } catch (e) {
+          // TODO: ignore for now
+          // https://github.com/atom-minimap/minimap/issues/766#issuecomment-762496374
+        }
       })
     }
     container.appendChild(this)

lib/minimap.js

@@ -1088,7 +1088,9 @@ export default class Minimap {
    * @return {DecorationManagement}
    */
   getDecorationManagement () {
-    if (this.DecorationManagement === undefined) {
+    if (this.DecorationManagement === undefined &&
+      this.minimapElement // TODO: find why this becomes null: https://github.com/atom-minimap/minimap/issues/766
+    ) {
       this.DecorationManagement = this.minimapElement.DecorationManagement
     }
     return this.DecorationManagement