Method parseBody

packages/common/http/src/fetch.ts:336–368

(
    request: HttpRequest<any>,
    binContent: Uint8Array<ArrayBuffer>,
    contentType: string,
    status: number,
  )

  }

  private parseBody(
    request: HttpRequest<any>,
    binContent: Uint8Array<ArrayBuffer>,
    contentType: string,
    status: number,
  ): string | ArrayBuffer | Blob | object | null {
    switch (request.responseType) {
      case 'json':
        // stripping the XSSI when present
        const text = getTextDecoder(contentType).decode(binContent).replace(XSSI_PREFIX, '');
        if (text === '') {
          return null;
        }
        try {
          return JSON.parse(text) as object;
        } catch (e: unknown) {
          // Allow handling non-JSON errors (!) as plain text, same as the XHR
          // backend. Without this special sauce, any non-JSON error would be
          // completely inaccessible downstream as the `HttpErrorResponse.error`
          // would be set to the `SyntaxError` from then failing `JSON.parse`.
          if (status < 200 || status >= 300) {
            return text;
          }
          throw e;
        }
      case 'text':
        return getTextDecoder(contentType).decode(binContent);
      case 'blob':
        return new Blob([binContent], {type: contentType});
      case 'arraybuffer':
        return binContent.buffer;
    }
  }

  private createRequestInit(req: HttpRequest<any>): RequestInit {
    if (req.reportUploadProgress) {