@grpc/grpc-js/src/error.ts

/*
 * Copyright 2022 gRPC authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

export function getErrorMessage(error: unknown): string {
  if (error instanceof Error) {
    return error.message;
  } else {
    return String(error);
  }
}

export function getErrorCode(error: unknown): number | null {
  if (
    typeof error === 'object' &&
    error !== null &&
    'code' in error &&
    typeof (error as Record<string, unknown>).code === 'number'
  ) {
    return (error as Record<string, number>).code;
  } else {
    return null;
  }
}