diff --git a/.changeset/thirty-hoops-own.md b/.changeset/thirty-hoops-own.md
new file mode 100644
index 0000000000..88b55d5f98
--- /dev/null
+++ b/.changeset/thirty-hoops-own.md
@@ -0,0 +1,5 @@
+---
+'@backstage/frontend-plugin-api': patch
+---
+
+Updated to `ExtensionInput` to make all type parameters optional.
diff --git a/packages/frontend-app-api/src/tree/instantiateAppNodeTree.test.ts b/packages/frontend-app-api/src/tree/instantiateAppNodeTree.test.ts
index 13ec6e8a59..a07fdf352d 100644
--- a/packages/frontend-app-api/src/tree/instantiateAppNodeTree.test.ts
+++ b/packages/frontend-app-api/src/tree/instantiateAppNodeTree.test.ts
@@ -787,14 +787,8 @@ describe('instantiateAppNodeTree', () => {
       inputs: {
         [name in string]:
           | undefined
-          | ResolvedExtensionInput<
-              ExtensionInput<any, { singleton: boolean; optional: boolean }>
-            >
-          | Array<
-              ResolvedExtensionInput<
-                ExtensionInput<any, { singleton: boolean; optional: boolean }>
-              >
-            >;
+          | ResolvedExtensionInput<ExtensionInput>
+          | Array<ResolvedExtensionInput<ExtensionInput>>;
       };
     }) {
       return [
diff --git a/packages/frontend-app-api/src/tree/instantiateAppNodeTree.ts b/packages/frontend-app-api/src/tree/instantiateAppNodeTree.ts
index 39fc88c19a..04082f8520 100644
--- a/packages/frontend-app-api/src/tree/instantiateAppNodeTree.ts
+++ b/packages/frontend-app-api/src/tree/instantiateAppNodeTree.ts
@@ -243,20 +243,10 @@ function resolveV1Inputs(
 }
 
 function resolveV2Inputs(
-  inputMap: {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  },
+  inputMap: { [inputName in string]: ExtensionInput },
   attachments: ReadonlyMap<string, AppNode[]>,
   parentCollector: ErrorCollector<{ node: AppNode }>,
-): ResolvedExtensionInputs<{
-  [inputName in string]: ExtensionInput<
-    ExtensionDataRef,
-    { optional: boolean; singleton: boolean }
-  >;
-}> {
+): ResolvedExtensionInputs<{ [inputName in string]: ExtensionInput }> {
   return mapValues(inputMap, (input, inputName) => {
     const attachedNodes = attachments.get(inputName) ?? [];
     const collector = parentCollector.child({ inputName });
@@ -297,12 +287,7 @@ function resolveV2Inputs(
         collector,
       ),
     );
-  }) as ResolvedExtensionInputs<{
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  }>;
+  }) as ResolvedExtensionInputs<{ [inputName in string]: ExtensionInput }>;
 }
 
 /** @internal */
diff --git a/packages/frontend-internal/src/wiring/InternalExtensionDefinition.ts b/packages/frontend-internal/src/wiring/InternalExtensionDefinition.ts
index 83d037902b..08f787a4ae 100644
--- a/packages/frontend-internal/src/wiring/InternalExtensionDefinition.ts
+++ b/packages/frontend-internal/src/wiring/InternalExtensionDefinition.ts
@@ -70,22 +70,14 @@ export const OpaqueExtensionDefinition = OpaqueType.create<{
         readonly attachTo: ExtensionAttachToSpec;
         readonly disabled: boolean;
         readonly configSchema?: PortableSchema<any, any>;
-        readonly inputs: {
-          [inputName in string]: ExtensionInput<
-            ExtensionDataRef,
-            { optional: boolean; singleton: boolean }
-          >;
-        };
+        readonly inputs: { [inputName in string]: ExtensionInput };
         readonly output: Array<ExtensionDataRef>;
         factory(context: {
           node: AppNode;
           apis: ApiHolder;
           config: object;
           inputs: ResolvedExtensionInputs<{
-            [inputName in string]: ExtensionInput<
-              ExtensionDataRef,
-              { optional: boolean; singleton: boolean }
-            >;
+            [inputName in string]: ExtensionInput;
           }>;
         }): Iterable<ExtensionDataValue<any, any>>;
       };
diff --git a/packages/frontend-plugin-api/report.api.md b/packages/frontend-plugin-api/report.api.md
index 52a50659b6..b7c5b08528 100644
--- a/packages/frontend-plugin-api/report.api.md
+++ b/packages/frontend-plugin-api/report.api.md
@@ -399,13 +399,7 @@ export { createApiRef };
 export function createExtension<
   UOutput extends ExtensionDataRef,
   TInputs extends {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      {
-        optional: boolean;
-        singleton: boolean;
-      }
-    >;
+    [inputName in string]: ExtensionInput;
   },
   TConfigSchema extends {
     [key: string]: (zImpl: typeof z) => z.ZodType;
@@ -453,13 +447,7 @@ export function createExtensionBlueprint<
   TParams extends object | ExtensionBlueprintDefineParams,
   UOutput extends ExtensionDataRef,
   TInputs extends {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      {
-        optional: boolean;
-        singleton: boolean;
-      }
-    >;
+    [inputName in string]: ExtensionInput;
   },
   TConfigSchema extends {
     [key in string]: (zImpl: typeof z) => z.ZodType;
@@ -511,13 +499,7 @@ export type CreateExtensionBlueprintOptions<
   TParams extends object | ExtensionBlueprintDefineParams,
   UOutput extends ExtensionDataRef,
   TInputs extends {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      {
-        optional: boolean;
-        singleton: boolean;
-      }
-    >;
+    [inputName in string]: ExtensionInput;
   },
   TConfigSchema extends {
     [key in string]: (zImpl: typeof z) => z.ZodType;
@@ -601,13 +583,7 @@ export type CreateExtensionOptions<
   TName extends string | undefined,
   UOutput extends ExtensionDataRef,
   TInputs extends {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      {
-        optional: boolean;
-        singleton: boolean;
-      }
-    >;
+    [inputName in string]: ExtensionInput;
   },
   TConfigSchema extends {
     [key: string]: (zImpl: typeof z) => z.ZodType;
@@ -909,13 +885,7 @@ export interface ExtensionBlueprint<
     UFactoryOutput extends ExtensionDataValue<any, any>,
     UNewOutput extends ExtensionDataRef,
     TExtraInputs extends {
-      [inputName in string]: ExtensionInput<
-        ExtensionDataRef,
-        {
-          optional: boolean;
-          singleton: boolean;
-        }
-      >;
+      [inputName in string]: ExtensionInput;
     },
   >(args: {
     name?: TName;
@@ -1008,13 +978,7 @@ export type ExtensionBlueprintParameters = {
   };
   output?: ExtensionDataRef;
   inputs?: {
-    [KName in string]: ExtensionInput<
-      ExtensionDataRef,
-      {
-        optional: boolean;
-        singleton: boolean;
-      }
-    >;
+    [KName in string]: ExtensionInput;
   };
   dataRefs?: {
     [name in string]: ExtensionDataRef;
@@ -1116,13 +1080,7 @@ export type ExtensionDefinition<
     UFactoryOutput extends ExtensionDataValue<any, any>,
     UNewOutput extends ExtensionDataRef,
     TExtraInputs extends {
-      [inputName in string]: ExtensionInput<
-        ExtensionDataRef,
-        {
-          optional: boolean;
-          singleton: boolean;
-        }
-      >;
+      [inputName in string]: ExtensionInput;
     },
     TParamsInput extends AnyParamsInput_2<NonNullable<T['params']>>,
   >(
@@ -1222,13 +1180,7 @@ export type ExtensionDefinitionParameters = {
   };
   output?: ExtensionDataRef;
   inputs?: {
-    [KName in string]: ExtensionInput<
-      ExtensionDataRef,
-      {
-        optional: boolean;
-        singleton: boolean;
-      }
-    >;
+    [KName in string]: ExtensionInput;
   };
   params?: object | ExtensionBlueprintDefineParams;
 };
@@ -1253,10 +1205,13 @@ export interface ExtensionInput<
     {
       optional?: true;
     }
-  >,
+  > = ExtensionDataRef,
   TConfig extends {
     singleton: boolean;
     optional: boolean;
+  } = {
+    singleton: boolean;
+    optional: boolean;
   },
 > {
   // (undocumented)
@@ -1625,18 +1580,17 @@ export const Progress: {
 export type ProgressProps = {};
 
 // @public
-export type ResolvedExtensionInput<
-  TExtensionInput extends ExtensionInput<any, any>,
-> = TExtensionInput['extensionData'] extends Array<ExtensionDataRef>
-  ? {
-      node: AppNode;
-    } & ExtensionDataContainer<TExtensionInput['extensionData'][number]>
-  : never;
+export type ResolvedExtensionInput<TExtensionInput extends ExtensionInput> =
+  TExtensionInput['extensionData'] extends Array<ExtensionDataRef>
+    ? {
+        node: AppNode;
+      } & ExtensionDataContainer<TExtensionInput['extensionData'][number]>
+    : never;
 
 // @public
 export type ResolvedExtensionInputs<
   TInputs extends {
-    [name in string]: ExtensionInput<any, any>;
+    [name in string]: ExtensionInput;
   },
 > = {
   [InputName in keyof TInputs]: false extends TInputs[InputName]['config']['singleton']
diff --git a/packages/frontend-plugin-api/src/wiring/createExtension.ts b/packages/frontend-plugin-api/src/wiring/createExtension.ts
index 0c0b75a572..8ed4b8b259 100644
--- a/packages/frontend-plugin-api/src/wiring/createExtension.ts
+++ b/packages/frontend-plugin-api/src/wiring/createExtension.ts
@@ -44,13 +44,12 @@ export const ctxParamsSymbol = Symbol('params');
  * Convert a single extension input into a matching resolved input.
  * @public
  */
-export type ResolvedExtensionInput<
-  TExtensionInput extends ExtensionInput<any, any>,
-> = TExtensionInput['extensionData'] extends Array<ExtensionDataRef>
-  ? {
-      node: AppNode;
-    } & ExtensionDataContainer<TExtensionInput['extensionData'][number]>
-  : never;
+export type ResolvedExtensionInput<TExtensionInput extends ExtensionInput> =
+  TExtensionInput['extensionData'] extends Array<ExtensionDataRef>
+    ? {
+        node: AppNode;
+      } & ExtensionDataContainer<TExtensionInput['extensionData'][number]>
+    : never;
 
 /**
  * Converts an extension input map into a matching collection of resolved inputs.
@@ -58,7 +57,7 @@ export type ResolvedExtensionInput<
  */
 export type ResolvedExtensionInputs<
   TInputs extends {
-    [name in string]: ExtensionInput<any, any>;
+    [name in string]: ExtensionInput;
   },
 > = {
   [InputName in keyof TInputs]: false extends TInputs[InputName]['config']['singleton']
@@ -123,12 +122,7 @@ export type CreateExtensionOptions<
   TKind extends string | undefined,
   TName extends string | undefined,
   UOutput extends ExtensionDataRef,
-  TInputs extends {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  },
+  TInputs extends { [inputName in string]: ExtensionInput },
   TConfigSchema extends { [key: string]: (zImpl: typeof z) => z.ZodType },
   UFactoryOutput extends ExtensionDataValue<any, any>,
 > = {
@@ -158,12 +152,7 @@ export type ExtensionDefinitionParameters = {
   configInput?: { [K in string]: any };
   config?: { [K in string]: any };
   output?: ExtensionDataRef;
-  inputs?: {
-    [KName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  };
+  inputs?: { [KName in string]: ExtensionInput };
   params?: object | ExtensionBlueprintDefineParams;
 };
 
@@ -194,12 +183,7 @@ export type ExtensionDefinition<
     },
     UFactoryOutput extends ExtensionDataValue<any, any>,
     UNewOutput extends ExtensionDataRef,
-    TExtraInputs extends {
-      [inputName in string]: ExtensionInput<
-        ExtensionDataRef,
-        { optional: boolean; singleton: boolean }
-      >;
-    },
+    TExtraInputs extends { [inputName in string]: ExtensionInput },
     TParamsInput extends AnyParamsInput<NonNullable<T['params']>>,
   >(
     args: Expand<
@@ -323,12 +307,7 @@ export type ExtensionDefinition<
  */
 export function createExtension<
   UOutput extends ExtensionDataRef,
-  TInputs extends {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  },
+  TInputs extends { [inputName in string]: ExtensionInput },
   TConfigSchema extends { [key: string]: (zImpl: typeof z) => z.ZodType },
   UFactoryOutput extends ExtensionDataValue<any, any>,
   const TKind extends string | undefined = undefined,
diff --git a/packages/frontend-plugin-api/src/wiring/createExtensionBlueprint.ts b/packages/frontend-plugin-api/src/wiring/createExtensionBlueprint.ts
index 1a24eed712..f8dd55ca80 100644
--- a/packages/frontend-plugin-api/src/wiring/createExtensionBlueprint.ts
+++ b/packages/frontend-plugin-api/src/wiring/createExtensionBlueprint.ts
@@ -103,12 +103,7 @@ export type CreateExtensionBlueprintOptions<
   TKind extends string,
   TParams extends object | ExtensionBlueprintDefineParams,
   UOutput extends ExtensionDataRef,
-  TInputs extends {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  },
+  TInputs extends { [inputName in string]: ExtensionInput },
   TConfigSchema extends { [key in string]: (zImpl: typeof z) => z.ZodType },
   UFactoryOutput extends ExtensionDataValue<any, any>,
   TDataRefs extends { [name in string]: ExtensionDataRef },
@@ -186,12 +181,7 @@ export type ExtensionBlueprintParameters = {
   configInput?: { [K in string]: any };
   config?: { [K in string]: any };
   output?: ExtensionDataRef;
-  inputs?: {
-    [KName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  };
+  inputs?: { [KName in string]: ExtensionInput };
   dataRefs?: { [name in string]: ExtensionDataRef };
 };
 
@@ -254,12 +244,7 @@ export interface ExtensionBlueprint<
     },
     UFactoryOutput extends ExtensionDataValue<any, any>,
     UNewOutput extends ExtensionDataRef,
-    TExtraInputs extends {
-      [inputName in string]: ExtensionInput<
-        ExtensionDataRef,
-        { optional: boolean; singleton: boolean }
-      >;
-    },
+    TExtraInputs extends { [inputName in string]: ExtensionInput },
   >(args: {
     name?: TName;
     attachTo?: ExtensionAttachToSpec;
@@ -455,12 +440,7 @@ function unwrapParams<TParams extends object>(
 export function createExtensionBlueprint<
   TParams extends object | ExtensionBlueprintDefineParams,
   UOutput extends ExtensionDataRef,
-  TInputs extends {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  },
+  TInputs extends { [inputName in string]: ExtensionInput },
   TConfigSchema extends { [key in string]: (zImpl: typeof z) => z.ZodType },
   UFactoryOutput extends ExtensionDataValue<any, any>,
   TKind extends string,
diff --git a/packages/frontend-plugin-api/src/wiring/createExtensionInput.ts b/packages/frontend-plugin-api/src/wiring/createExtensionInput.ts
index 7209e6f647..24e14c45b2 100644
--- a/packages/frontend-plugin-api/src/wiring/createExtensionInput.ts
+++ b/packages/frontend-plugin-api/src/wiring/createExtensionInput.ts
@@ -18,8 +18,15 @@ import { ExtensionDataRef } from './createExtensionDataRef';
 
 /** @public */
 export interface ExtensionInput<
-  UExtensionData extends ExtensionDataRef<unknown, string, { optional?: true }>,
-  TConfig extends { singleton: boolean; optional: boolean },
+  UExtensionData extends ExtensionDataRef<
+    unknown,
+    string,
+    { optional?: true }
+  > = ExtensionDataRef,
+  TConfig extends { singleton: boolean; optional: boolean } = {
+    singleton: boolean;
+    optional: boolean;
+  },
 > {
   $$type: '@backstage/ExtensionInput';
   extensionData: Array<UExtensionData>;
diff --git a/packages/frontend-plugin-api/src/wiring/resolveExtensionDefinition.ts b/packages/frontend-plugin-api/src/wiring/resolveExtensionDefinition.ts
index a5b6859e1a..a0a9a52dd3 100644
--- a/packages/frontend-plugin-api/src/wiring/resolveExtensionDefinition.ts
+++ b/packages/frontend-plugin-api/src/wiring/resolveExtensionDefinition.ts
@@ -68,22 +68,14 @@ export type InternalExtension<TConfig, TConfigInput> = Extension<
       }
     | {
         readonly version: 'v2';
-        readonly inputs: {
-          [inputName in string]: ExtensionInput<
-            ExtensionDataRef,
-            { optional: boolean; singleton: boolean }
-          >;
-        };
+        readonly inputs: { [inputName in string]: ExtensionInput };
         readonly output: Array<ExtensionDataRef>;
         factory(options: {
           apis: ApiHolder;
           node: AppNode;
           config: TConfig;
           inputs: ResolvedExtensionInputs<{
-            [inputName in string]: ExtensionInput<
-              ExtensionDataRef,
-              { optional: boolean; singleton: boolean }
-            >;
+            [inputName in string]: ExtensionInput;
           }>;
         }): Iterable<ExtensionDataValue<any, any>>;
       }
diff --git a/packages/frontend-plugin-api/src/wiring/resolveInputOverrides.ts b/packages/frontend-plugin-api/src/wiring/resolveInputOverrides.ts
index 8ffec893ee..b46bb426fa 100644
--- a/packages/frontend-plugin-api/src/wiring/resolveInputOverrides.ts
+++ b/packages/frontend-plugin-api/src/wiring/resolveInputOverrides.ts
@@ -19,7 +19,6 @@ import { Expand } from '@backstage/types';
 import { ResolvedExtensionInput } from './createExtension';
 import { createExtensionDataContainer } from '@internal/frontend';
 import {
-  ExtensionDataRef,
   ExtensionDataRefToValue,
   ExtensionDataValue,
 } from './createExtensionDataRef';
@@ -28,16 +27,8 @@ import { ExtensionDataContainer } from './types';
 
 /** @ignore */
 export type ResolvedInputValueOverrides<
-  TInputs extends {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  } = {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
+  TInputs extends { [inputName in string]: ExtensionInput } = {
+    [inputName in string]: ExtensionInput;
   },
 > = Expand<
   {
@@ -90,12 +81,7 @@ function expectItem<T>(value: T | T[]): T {
 
 /** @internal */
 export function resolveInputOverrides(
-  declaredInputs?: {
-    [inputName in string]: ExtensionInput<
-      ExtensionDataRef,
-      { optional: boolean; singleton: boolean }
-    >;
-  },
+  declaredInputs?: { [inputName in string]: ExtensionInput },
   inputs?: {
     [KName in string]?:
       | ({ node: AppNode } & ExtensionDataContainer<any>)
diff --git a/plugins/api-docs/report-alpha.api.md b/plugins/api-docs/report-alpha.api.md
index 4248b1b42c..43c45c1a1d 100644
--- a/plugins/api-docs/report-alpha.api.md
+++ b/plugins/api-docs/report-alpha.api.md
@@ -490,8 +490,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
diff --git a/plugins/app/report.api.md b/plugins/app/report.api.md
index d12ada15b4..595cc9bc19 100644
--- a/plugins/app/report.api.md
+++ b/plugins/app/report.api.md
@@ -717,8 +717,8 @@ const appPlugin: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
@@ -736,8 +736,8 @@ const appPlugin: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
diff --git a/plugins/catalog-graph/report-alpha.api.md b/plugins/catalog-graph/report-alpha.api.md
index edf84e936a..112df3aac6 100644
--- a/plugins/catalog-graph/report-alpha.api.md
+++ b/plugins/catalog-graph/report-alpha.api.md
@@ -136,8 +136,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
@@ -198,8 +198,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
diff --git a/plugins/catalog/report-alpha.api.md b/plugins/catalog/report-alpha.api.md
index 4f581add67..b917d74542 100644
--- a/plugins/catalog/report-alpha.api.md
+++ b/plugins/catalog/report-alpha.api.md
@@ -194,8 +194,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
@@ -228,8 +228,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
@@ -251,8 +251,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
diff --git a/plugins/org/report-alpha.api.md b/plugins/org/report-alpha.api.md
index 3f8fdca05d..8cefd7dd11 100644
--- a/plugins/org/report-alpha.api.md
+++ b/plugins/org/report-alpha.api.md
@@ -104,8 +104,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
@@ -159,8 +159,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
@@ -214,8 +214,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
diff --git a/plugins/techdocs/report-alpha.api.md b/plugins/techdocs/report-alpha.api.md
index 7681810d6c..fe29dfbad4 100644
--- a/plugins/techdocs/report-alpha.api.md
+++ b/plugins/techdocs/report-alpha.api.md
@@ -81,8 +81,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
@@ -330,8 +330,8 @@ const _default: OverridableFrontendPlugin<
         [x: string]: ExtensionInput<
           ExtensionDataRef,
           {
-            optional: boolean;
             singleton: boolean;
+            optional: boolean;
           }
         >;
       };
@@ -373,8 +373,8 @@ export const techDocsSearchResultListItemExtension: ExtensionDefinition<{
     [x: string]: ExtensionInput<
       ExtensionDataRef,
       {
-        optional: boolean;
         singleton: boolean;
+        optional: boolean;
       }
     >;
   };