docs: add comments for some code reasons

Author: js2me

src/router/router.ts

@@ -76,7 +76,11 @@ export class MobxRouter implements IMobxRouter {
     const url = this.createUrl(
       {
         ...path,
-        // This
+        // This is fixes bug with pathname endings /
+        // If location.pathname is /test-foo then after navigation to /test-foo#bar
+        // navigation back will not work
+        // If location.pathname is /test-foo/ then after navigation to /test-foo/#/bar
+        // navigation back will not work
         baseUrl: this.location.pathname,
       },
       this.type,

src/router/router.types.ts

@@ -12,6 +12,7 @@ export interface IMobxRouter {
 
   /**
    * The base URL of the router.
+   * !!! Works only for "browser" router type
    */
   baseUrl?: string;