Correct getAlias to always get unique aliases

... even if there's only one entry point.

Resolves #1845

CHANGELOG.md

@@ -18,6 +18,7 @@ These TODOs will be resolved before a full release. ([GitHub project](https://gi
 
 -   `@inheritDoc` now follows the behavior specified by TSDoc when copying comments with a reference.
 -   The `gaSite` option has been removed since Google Analytics now infers the site automatically, updated Google Analytics script to latest version, #1846.
+-   Comments on export declarations will only overrides comments for references and namespaces, #1901.
 -   The deprecated `listInvalidSymbolLinks` option has been removed. Use `validation.invalidLink` instead.
 -   The deprecated `true` and `false` values have been removed from `--emit`, to migrate replace `true` with `"both"` and `false` with `"docs"`.
 -   Links are no longer be resolved against a global list of all symbols. See [the documentation](https://typedoc.org/guides/link-resolution/) for details on link resolution.
@@ -28,7 +29,6 @@ These TODOs will be resolved before a full release. ([GitHub project](https://gi
 -   Listeners to `Converter.EVENT_CREATE_TYPE_PARAMETER` and `Converter.EVENT_CREATE_DECLARATION` will now never be passed a `ts.Node` as their third argument.
 -   Constant variables which are interpreted as functions will no longer have the `ReflectionFlag.Const` flag set.
 -   Removed deprecated `removeReaderByName`, `addDeclarations` and `removeDeclarationByName` methods on `Options`.
--   Comments on export declarations will only overrides comments for references and namespaces, #1901.
 
 ### Features
 
@@ -47,6 +47,7 @@ These TODOs will be resolved before a full release. ([GitHub project](https://gi
 -   Improved comment discovery on destructured exported functions, #1770.
 -   Links which refer to members within a reference reflection will now correctly resolve to the referenced reflection's member, #1770.
 -   Correctly detect optional parameters in JavaScript projects using JSDoc, #1804.
+-   Fixed identical anchor links for reflections with the same name, #1845.
 -   JS exports defined as `exports.foo = ...` will now be converted as variables rather than properties.
 
 ### Thanks!

src/lib/models/reflections/abstract.ts

@@ -414,18 +414,12 @@ export abstract class Reflection {
                 alias = "reflection-" + this.id;
             }
 
-            let target = <Reflection>this;
-            while (
-                target.parent &&
-                !target.parent.isProject() &&
-                !target.hasOwnDocument
-            ) {
+            let target = this as Reflection;
+            while (target.parent && !target.hasOwnDocument) {
                 target = target.parent;
             }
 
-            if (!target._aliases) {
-                target._aliases = new Map();
-            }
+            target._aliases ||= new Map();
 
             let suffix = "";
             if (!target._aliases.has(alias)) {

src/lib/output/themes/default/DefaultTheme.tsx

@@ -25,12 +25,6 @@ interface TemplateMapping {
      */
     kind: ReflectionKind[];
 
-    /**
-     * Can this mapping have children or should all further reflections be rendered
-     * to the defined output page?
-     */
-    isLeaf: boolean;
-
     /**
      * The name of the directory the output files should be written to.
      */
@@ -73,43 +67,36 @@ export class DefaultTheme extends Theme {
     private mappings: TemplateMapping[] = [
         {
             kind: [ReflectionKind.Class],
-            isLeaf: false,
             directory: "classes",
             template: this.reflectionTemplate,
         },
         {
             kind: [ReflectionKind.Interface],
-            isLeaf: false,
             directory: "interfaces",
             template: this.reflectionTemplate,
         },
         {
             kind: [ReflectionKind.Enum],
-            isLeaf: false,
             directory: "enums",
             template: this.reflectionTemplate,
         },
         {
             kind: [ReflectionKind.Namespace, ReflectionKind.Module],
-            isLeaf: false,
             directory: "modules",
             template: this.reflectionTemplate,
         },
         {
             kind: [ReflectionKind.TypeAlias],
-            isLeaf: false,
             directory: "types",
             template: this.reflectionTemplate,
         },
         {
             kind: [ReflectionKind.Function],
-            isLeaf: false,
             directory: "functions",
             template: this.reflectionTemplate,
         },
         {
             kind: [ReflectionKind.Variable],
-            isLeaf: false,
             directory: "variables",
             template: this.reflectionTemplate,
         },
@@ -225,11 +212,7 @@ export class DefaultTheme extends Theme {
             }
 
             for (const child of reflection.children || []) {
-                if (mapping.isLeaf) {
-                    DefaultTheme.applyAnchorUrl(child, reflection);
-                } else {
-                    this.buildUrls(child, urls);
-                }
+                this.buildUrls(child, urls);
             }
         } else if (reflection.parent) {
             DefaultTheme.applyAnchorUrl(reflection, reflection.parent);