Method fsOperation

extensions/vscode/src/util/ideUtils.ts:205–229

* Performs a file system operation on the given URI using the provided delegate function. * * @template T The type of the result returned by the delegate function. * @param uri The URI on which the file system operation is to be performed. * @param delegate A function that performs the d

(
    uri: vscode.Uri,
    delegate: (uri: vscode.Uri) => T,
    ignoreMissingProviders: boolean = true,
  )

   * @throws Re-throws any error encountered during the operation, except for missing provider errors when `ignoreMissingProviders` is `true`.
   */
  private async fsOperation<T>(
    uri: vscode.Uri,
    delegate: (uri: vscode.Uri) => T,
    ignoreMissingProviders: boolean = true,
  ): Promise<T | null> {
    const scheme = uri.scheme;
    if (ignoreMissingProviders && UNSUPPORTED_SCHEMES.has(scheme)) {
      return null;
    }
    try {
      return await delegate(uri);
    } catch (err: any) {
      if (
        ignoreMissingProviders &&
        //see https://github.com/microsoft/vscode/blob/c9c54f9e775e5f57d97bef796797b5bc670c8150/src/vs/workbench/api/common/extHostFileSystemConsumer.ts#L230
        (err.name === NO_FS_PROVIDER_ERROR ||
          err.message?.includes(NO_FS_PROVIDER_ERROR))
      ) {
        UNSUPPORTED_SCHEMES.add(scheme);
        console.log(`Ignoring missing provider error:`, err.message);
        return null;
      }
      throw err;
    }
  }

  showVirtualFile(name: string, contents: string) {
    vscode.workspace