Add support for backward compatibility for TypeDoc versions <0.9.0

2 files changed, 11 insertions, 3 deletions

diff --git a/packages/website/ts/types.ts b/packages/website/ts/types.ts
index f0db537e6..5786787c0 100644
--- a/packages/website/ts/types.ts
+++ b/packages/website/ts/types.ts
@@ -308,7 +308,7 @@ export interface TypeDocNode {
     returns?: string;
     declaration: TypeDocNode;
     flags?: TypeDocFlags;
-    indexSignature?: TypeDocNode[];
+    indexSignature?: TypeDocNode | TypeDocNode[];
     signatures?: TypeDocNode[];
     parameters?: TypeDocNode[];
     typeParameter?: TypeDocNode[];
diff --git a/packages/website/ts/utils/typedoc_utils.ts b/packages/website/ts/utils/typedoc_utils.ts
index 992475911..0f79410ae 100644
--- a/packages/website/ts/utils/typedoc_utils.ts
+++ b/packages/website/ts/utils/typedoc_utils.ts
@@ -170,8 +170,16 @@ export const typeDocUtils = {
         const methodIfExists = !_.isUndefined(entity.declaration)
             ? typeDocUtils._convertMethod(entity.declaration, isConstructor, sections, sectionName, docId)
             : undefined;
-        const indexSignatureIfExists = !_.isUndefined(entity.indexSignature)
-            ? typeDocUtils._convertIndexSignature(entity.indexSignature[0], sections, sectionName, docId)
+        const doesIndexSignatureExist = !_.isUndefined(entity.indexSignature);
+        const isIndexSignatureArray = _.isArray(entity.indexSignature);
+        // HACK: TypeDoc Versions <0.9.0 indexSignature is of type TypeDocNode[]
+        // Versions >0.9.0 have it as type TypeDocNode
+        const indexSignature =
+            doesIndexSignatureExist && isIndexSignatureArray
+                ? ((entity.indexSignature as TypeDocNode[])[0] as TypeDocNode)
+                : (entity.indexSignature as TypeDocNode);
+        const indexSignatureIfExists = doesIndexSignatureExist
+            ? typeDocUtils._convertIndexSignature(indexSignature, sections, sectionName, docId)
             : undefined;
         const commentIfExists =
             !_.isUndefined(entity.comment) && !_.isUndefined(entity.comment.shortText)