Class HttpErrorResponse

packages/common/http/src/response.ts:401–436

 * @publicApi
 */
export class HttpErrorResponse extends HttpResponseBase implements Error {
  readonly name = 'HttpErrorResponse';
  readonly message: string;
  readonly error: any | null;

  /**
   * Errors are never okay, even when the status code is in the 2xx success range.
   */
  override readonly ok = false;

  constructor(init: {
    error?: any;
    headers?: HttpHeaders;
    status?: number;
    statusText?: string;
    url?: string;
    redirected?: boolean;
    responseType?: ResponseType;
  }) {
    // Initialize with a default status of 0 / Unknown Error.
    super(init, 0, 'Unknown Error');

    // If the response was successful, then this was a parse error. Otherwise, it was
    // a protocol-level failure of some sort. Either the request failed in transit
    // or the server returned an unsuccessful status code.
    if (this.status >= 200 && this.status < 300) {
      this.message = `Http failure during parsing for ${init.url || '(unknown url)'}`;
    } else {
      // TODO: Cleanup G3 to update the tests that rely on having the status text in the Error message.
      this.message = `Http failure response for ${init.url || '(unknown url)'}: ${init.status} ${
        init.statusText
      }`;
    }
    this.error = init.error || null;
  }
}

/**
 * We use these constant to prevent pulling the whole HttpStatusCode enum