Disable @typescript-eslint/only-throw-error in test files

.changeset/small-meals-scream.md

@@ -0,0 +1,5 @@
+---
+'eslint-config-skuba': minor
+---
+
+Disable `@typescript-eslint/only-throw-error` in test files

packages/eslint-config-skuba/index.js

@@ -171,6 +171,9 @@ module.exports = [
       // Allow e.g. `/** @jest-environment jsdom */` directives
       'tsdoc/syntax': 'off',
 
+      // Allow edge-case error handling tests, including from skuba's templates
+      '@typescript-eslint/only-throw-error': 'off',
+
       // Allow potential floating promises in tests only for Koa compatibility
       // https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/docs/rules/no-misused-promises.md#checksvoidreturn
       // https://github.com/DefinitelyTyped/DefinitelyTyped/pull/42551#issuecomment-648816869

template/koa-rest-api/src/framework/server.test.ts

@@ -203,7 +203,6 @@ describe('createApp', () => {
 
   it('handles null error', async () => {
     middleware.mockImplementation(() => {
-      /* eslint-disable-next-line @typescript-eslint/only-throw-error */
       throw null;
     });