Merge pull request #3406 from backstage/orkohunter/fix-kubernetes-backend

fix(kubernetes-backend): Fix Typescript error stopping backend to start

.changeset/new-ladybugs-nail.md

@@ -0,0 +1,5 @@
+---
+'@backstage/cli': patch
+---
+
+New lint rule to disallow <type> assertions and promote `as` assertions. - @typescript-eslint/consistent-type-assertions

packages/cli/config/eslint.js

@@ -58,6 +58,7 @@ module.exports = {
     ],
     'no-unused-expressions': 'off',
     '@typescript-eslint/no-unused-expressions': 'error',
+    '@typescript-eslint/consistent-type-assertions': 'error',
     '@typescript-eslint/no-unused-vars': [
       'warn',
       {

plugins/kubernetes-backend/src/service/getKubernetesObjectsForServiceHandler.ts

@@ -97,12 +97,12 @@ export const handleGetKubernetesObjectsForService: GetKubernetesObjectsForServic
   return Promise.all(
     clusterDetailsDecoratedForAuth.map(clusterDetails => {
       return fetcher
-        .fetchObjectsForService(<ObjectFetchParams>{
+        .fetchObjectsForService({
           serviceId,
           clusterDetails,
           objectTypesToFetch,
           labelSelector,
-        })
+        } as ObjectFetchParams)
         .then(result => {
           return {
             cluster: {