Use a direct custom Error since backstage/errors seems unusable.

Signed-off-by: Jussi Hallila <jussi@hallila.com>

plugins/tech-insights-common/api-report.md

@@ -4,7 +4,6 @@
 
 ```ts
 import { Config } from '@backstage/config';
-import { CustomErrorBase } from '@backstage/errors';
 import { DateTime } from 'luxon';
 import { Logger as Logger_2 } from 'winston';
 import { PluginEndpointDiscovery } from '@backstage/backend-common';
@@ -32,16 +31,8 @@ export type CheckResult = {
 };
 
 // @public
-export class CheckValidationError extends CustomErrorBase {
-  constructor({
-    message,
-    cause,
-    errors,
-  }: {
-    message: string;
-    cause?: Error;
-    errors?: any;
-  });
+export class CheckValidationError extends Error {
+  constructor({ message, errors }: { message: string; errors?: any });
   // (undocumented)
   errors?: any;
 }

plugins/tech-insights-common/package.json

@@ -31,7 +31,6 @@
   },
   "dependencies": {
     "@backstage/backend-common": "^0.9.0",
-    "@backstage/errors": "^0.1.2",
     "@backstage/config": "^0.1.8",
     "@types/luxon": "^2.0.5",
     "luxon": "^2.0.2",

plugins/tech-insights-common/src/checks.ts

@@ -15,7 +15,6 @@
  */
 import { TechInsightsStore } from './persistence';
 import { CheckResponse, FactResponse } from './responses';
-import { CustomErrorBase } from '@backstage/errors';
 
 /**
  * A factory wrapper to construct FactChecker implementations.
@@ -192,19 +191,11 @@ export type CheckValidationResponse = {
  *
  * @public
  */
-export class CheckValidationError extends CustomErrorBase {
+export class CheckValidationError extends Error {
   errors?: any;
 
-  constructor({
-    message,
-    cause,
-    errors,
-  }: {
-    message: string;
-    cause?: Error;
-    errors?: any;
-  }) {
-    super(message, cause);
+  constructor({ message, errors }: { message: string; errors?: any }) {
+    super(message);
     this.errors = errors;
   }
 }