packages/core/src/result.ts

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 type Result<T> =
  | { ok: true; data: T }
  | { ok: false; error: { code: string; message: string; details?: unknown } };

export function ok<T>(data: T): Result<T> {
  return { ok: true, data };
}

export function err(code: string, message: string, details?: unknown): Result<never> {
  return { ok: false, error: { code, message, details } };
}

export async function tryResult<T>(fn: () => Promise<T>, errorCode: string): Promise<Result<T>> {
  try {
    return ok(await fn());
  } catch (error) {
    const message = error instanceof Error ? error.message : String(error);
    return err(errorCode, message, error);
  }
}