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VS Code Extension

VS Code Marketplace Open VSX

Datamitsu Toolkit brings datamitsu into your editor: "Format Document" and format-on-save run your project's datamitsu fix on the real file — the exact same formatters as on the command line, driven by one config.

The extension is a thin client around datamitsu lsp. It does not bundle any formatters or reimplement any formatting logic: it starts the language server, registers it as a document formatter, and shows long-running work (tool downloads, installs) in the status bar.

Install​

  • VS Code — install Datamitsu Toolkit from the Marketplace, or search for "Datamitsu Toolkit" in the Extensions view (Ctrl+Shift+X).
  • Cursor, Windsurf, VSCodium, and other VS Code-based editors — install Datamitsu Toolkit from Open VSX, the registry these editors use. Searching "Datamitsu Toolkit" in the editor's Extensions view finds the same extension.

Or from the command line:

code --install-extension datamitsu.datamitsu-toolkit

Requirements​

A datamitsu binary. By default the extension uses one found on your PATH; if there is none, it downloads the version pinned to the extension build and verifies it by SHA-256 before running it.

The extension activates only in a workspace that has a datamitsu config (datamitsu.config.js, datamitsu.config.mjs, or datamitsu.config.ts).

Usage​

Both triggers run your project's datamitsu fix on the real file:

  • Format Document (Shift+Alt+F), or set datamitsu as the default formatter.
  • On save — enable format-on-save and pick datamitsu as the formatter:
{
  "editor.formatOnSave": true,
  "[go]": { "editor.defaultFormatter": "datamitsu.datamitsu-toolkit" },
  "[typescript]": { "editor.defaultFormatter": "datamitsu.datamitsu-toolkit" },
}

Because datamitsu's fix tools edit files in place, formatting runs on the file on disk and therefore also saves it. The edits are computed as the diff between your buffer and the fixed result, so the editor stays in sync.

Settings​

SettingDefaultDescription
datamitsu.binaryModeautoauto (PATH, else pinned download), system (PATH only), or bundled (always the pinned download).
datamitsu.path""Explicit path to the datamitsu binary; overrides binaryMode.
datamitsu.trace.serveroffTrace JSON-RPC traffic to the output channel.

Commands​

  • datamitsu: Restart Language Server
  • datamitsu: Show Output Channel

Source​

The extension lives in the datamitsu monorepo under editors/vscode. Each release also attaches the .vsix to the GitHub Release for manual installation.