如何使用终端 API 监听 vscode 中的所有终端输出？

Question

I want to listen to terminal output from extension, such as tsc -w and catch the moment if the output contains similar text:

Found 1 error. Watching for file changes.

Or the error exit code or something like that. Is it possible to do with old API or Proposed API?

Tried:

terminal.onDidWriteData(data => {
    console.log('onDidWriteData: ', data.trim());
});

It just outputs autogenerated rubbish like:

Windows PowerShell Copyright (C) Microsoft Corporation. All rights reserved.

Answer 1

Looks like it is deprecated in insiders edition. Try using window.onDidWriteTerminalData :

window.onDidWriteTerminalData(event => console.log(event.data.trim()))

Reference

• https://github.com/microsoft/vscode/issues/78574

Answer 2

Unfortunately there is no way. There is an event API - window.onDidWriteTerminalData , however it is a "proposed" API which means it's only in the Insiders version of VSCode and you can't use it in a published extension. Basically you can't use it.

According to this comment and this comment although it is "proposed" never going to make it stable due to performance concerns.

As an alternative perhaps you could pipe tsc -w through another program that forwards stdout/stderr and listens for the trigger string. When it sees it it can notify your extension through some other means, eg writing a file that you watch or some IPC system.

Unfortunately the downside of that approach is that you can no longer associate the terminal with the VSCode instance, so it might not work if you have multiple VSCode instances running.