Method fetchSpec

packages/cli/src/util/openapi/openapi-cache.ts:302–317

* Fetch OpenAPI spec from remote with timeout

(url: string)

   * Fetch OpenAPI spec from remote with timeout
   */
  private async fetchSpec(url: string): Promise<OpenApiSpec> {
    const controller = new AbortController();
    const timeoutId = setTimeout(() => controller.abort(), FETCH_TIMEOUT_MS);

    try {
      const response = await fetch(url, { signal: controller.signal });
      if (!response.ok) {
        throw new Error(`Failed to fetch OpenAPI spec: ${response.status}`);
      }
      const spec = await readSpecResponse<OpenApiSpec>(response, url);
      this.validateSpec(spec, url);
      return spec;
    } finally {
      clearTimeout(timeoutId);
    }
  }

  private validateSpec(spec: OpenApiSpec | null, url: string): void {
    if (!spec || typeof spec !== 'object') {