frontend-internal: add OpaqueType helper

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/frontend-plugin-api/src/wiring/createExtension.ts

@@ -31,7 +31,7 @@ import {
 import { ExtensionInput } from './createExtensionInput';
 import { z } from 'zod';
 import { createSchemaFromZod } from '../schema/createSchemaFromZod';
-import { InternalExtensionDefinition } from '@internal/frontend';
+import { OpaqueExtensionDefinition } from '@internal/frontend';
 
 /**
  * Convert a single extension input into a matching resolved input.
@@ -366,26 +366,6 @@ export function createExtension<
   namespace: string | undefined extends TNamespace ? undefined : TNamespace;
   name: string | undefined extends TName ? undefined : TName;
 }> {
-  type T = {
-    config: string extends keyof TConfigSchema
-      ? {}
-      : {
-          [key in keyof TConfigSchema]: z.infer<ReturnType<TConfigSchema[key]>>;
-        };
-    configInput: string extends keyof TConfigSchema
-      ? {}
-      : z.input<
-          z.ZodObject<{
-            [key in keyof TConfigSchema]: ReturnType<TConfigSchema[key]>;
-          }>
-        >;
-    output: UOutput;
-    inputs: TInputs;
-    kind: string | undefined extends TKind ? undefined : TKind;
-    namespace: string | undefined extends TNamespace ? undefined : TNamespace;
-    name: string | undefined extends TName ? undefined : TName;
-  };
-
   const schemaDeclaration = options.config?.schema;
   const configSchema =
     schemaDeclaration &&
@@ -397,10 +377,30 @@ export function createExtension<
       ),
     );
 
-  return {
+  return OpaqueExtensionDefinition.create({
     $$type: '@backstage/ExtensionDefinition',
     version: 'v2',
-    T: undefined as unknown as T,
+    T: undefined as unknown as {
+      config: string extends keyof TConfigSchema
+        ? {}
+        : {
+            [key in keyof TConfigSchema]: z.infer<
+              ReturnType<TConfigSchema[key]>
+            >;
+          };
+      configInput: string extends keyof TConfigSchema
+        ? {}
+        : z.input<
+            z.ZodObject<{
+              [key in keyof TConfigSchema]: ReturnType<TConfigSchema[key]>;
+            }>
+          >;
+      output: UOutput;
+      inputs: TInputs;
+      kind: string | undefined extends TKind ? undefined : TKind;
+      namespace: string | undefined extends TNamespace ? undefined : TNamespace;
+      name: string | undefined extends TName ? undefined : TName;
+    },
     kind: options.kind,
     namespace: options.namespace,
     name: options.name,
@@ -512,5 +512,5 @@ export function createExtension<
         },
       }) as ExtensionDefinition<any>;
     },
-  } as InternalExtensionDefinition<T>;
+  });
 }

packages/frontend-plugin-api/src/wiring/createExtensionBlueprint.test.tsx

@@ -29,12 +29,12 @@ import { createExtensionInput } from './createExtensionInput';
 import { RouteRef } from '../routing';
 import { ExtensionDefinition } from './createExtension';
 import { createExtensionDataContainer } from './createExtensionDataContainer';
-import { toInternalExtensionDefinition } from '@internal/frontend';
+import { OpaqueExtensionDefinition } from '@internal/frontend';
 
 function unused(..._any: any[]) {}
 
 function factoryOutput(ext: ExtensionDefinition, inputs: unknown = undefined) {
-  const int = toInternalExtensionDefinition(ext);
+  const int = OpaqueExtensionDefinition.toInternal(ext);
   if (int.version !== 'v2') {
     throw new Error('Expected v2 extension');
   }
@@ -680,7 +680,7 @@ describe('createExtensionBlueprint', () => {
       },
     });
 
-    const ext = toInternalExtensionDefinition(
+    const ext = OpaqueExtensionDefinition.toInternal(
       blueprint.makeWithOverrides({
         output: [testDataRef2],
         factory(origFactory) {

packages/frontend-plugin-api/src/wiring/createFrontendModule.ts

@@ -14,10 +14,7 @@
  * limitations under the License.
  */
 
-import {
-  InternalExtensionDefinition,
-  toInternalExtensionDefinition,
-} from '@internal/frontend';
+import { OpaqueExtensionDefinition } from '@internal/frontend';
 import { ExtensionDefinition } from './createExtension';
 import {
   Extension,
@@ -58,11 +55,11 @@ export function createFrontendModule<
   const extensions = new Array<Extension<any>>();
   const extensionDefinitionsById = new Map<
     string,
-    InternalExtensionDefinition
+    typeof OpaqueExtensionDefinition.TInternal
   >();
 
   for (const def of options.extensions ?? []) {
-    const internal = toInternalExtensionDefinition(def);
+    const internal = OpaqueExtensionDefinition.toInternal(def);
     const ext = resolveExtensionDefinition(def, { namespace: pluginId });
     extensions.push(ext);
     extensionDefinitionsById.set(ext.id, {

packages/frontend-plugin-api/src/wiring/createFrontendPlugin.ts

@@ -14,10 +14,7 @@
  * limitations under the License.
  */
 
-import {
-  InternalExtensionDefinition,
-  toInternalExtensionDefinition,
-} from '@internal/frontend';
+import { OpaqueExtensionDefinition } from '@internal/frontend';
 import { ExtensionDefinition } from './createExtension';
 import {
   Extension,
@@ -96,11 +93,11 @@ export function createFrontendPlugin<
   const extensions = new Array<Extension<any>>();
   const extensionDefinitionsById = new Map<
     string,
-    InternalExtensionDefinition
+    typeof OpaqueExtensionDefinition.TInternal
   >();
 
   for (const def of options.extensions ?? []) {
-    const internal = toInternalExtensionDefinition(def);
+    const internal = OpaqueExtensionDefinition.toInternal(def);
     const ext = resolveExtensionDefinition(def, { namespace: options.id });
     extensions.push(ext);
     extensionDefinitionsById.set(ext.id, {

packages/frontend-plugin-api/src/wiring/resolveExtensionDefinition.ts

@@ -26,7 +26,7 @@ import {
   AnyExtensionDataRef,
   ExtensionDataValue,
 } from './createExtensionDataRef';
-import { toInternalExtensionDefinition } from '@internal/frontend';
+import { OpaqueExtensionDefinition } from '@internal/frontend';
 
 /** @public */
 export interface Extension<TConfig, TConfigInput = TConfig> {
@@ -141,7 +141,7 @@ export function resolveExtensionDefinition<
   definition: ExtensionDefinition<T>,
   context?: { namespace?: string },
 ): Extension<T['config'], T['configInput']> {
-  const internalDefinition = toInternalExtensionDefinition(definition);
+  const internalDefinition = OpaqueExtensionDefinition.toInternal(definition);
   const {
     name,
     kind,