opencode tsgo LSP proxy

Point your agent to this repo and ask it to review the code for security issues. If it looks harmless, have it install the template into your codebase.

Copy-paste prompt for your agent:

Please review https://github.com/LeonMueller-OneAndOnly/opencode-tsgo-lsp-proxy for security issues. If the code looks harmless, install the template into this codebase and update opencode.json accordingly. After changing opencode.json, remind me to restart opencode.

Small stdio proxy template for using tsgo --lsp --stdio as the TypeScript LSP in opencode.

The copyable JavaScript files are in template/. The TypeScript source is in template-typescript/. This repository is meant to be cloned into a temporary location by an agent, reviewed, and then copied into the target project.

Why

Using tsgo --lsp --stdio directly in opencode can fail or keep hanging on diagnostics. This proxy starts tsgo, forwards LSP messages over stdio, restarts the child if it crashes, and replays the initialize/open-document state after a restart.

Install

From your project root:

tmpdir="$(mktemp -d)"
git clone https://github.com/LeonMueller-OneAndOnly/opencode-tsgo-lsp-proxy "$tmpdir/opencode-tsgo-lsp-proxy"
mkdir -p scripts/opencode-tsgo-lsp-proxy
cp -R "$tmpdir/opencode-tsgo-lsp-proxy/template/"* scripts/opencode-tsgo-lsp-proxy/

The copied template is plain JavaScript and runs with node; no TypeScript runner is needed in the target project.

opencode.json

Add or update the TypeScript LSP entry:

{
  "lsp": {
    "typescript": {
      "command": ["node", "scripts/opencode-tsgo-lsp-proxy/index.js"],
      "extensions": [".cjs", ".mjs", ".js", ".jsx", ".ts", ".tsx", ".mts", ".cts"]
    }
  }
}

Restart opencode after editing opencode.json; opencode does not reload LSP config in already-running sessions.

Options

By default the proxy runs the local node_modules/.bin/tsgo if present, otherwise tsgo from PATH.

Override the child command:

{
  "lsp": {
    "typescript": {
      "command": ["node", "scripts/opencode-tsgo-lsp-proxy/index.js"],
      "env": {
        "OPENCODE_TSGO_COMMAND": "./node_modules/.bin/tsgo --lsp --stdio"
      },
      "extensions": [".cjs", ".mjs", ".js", ".jsx", ".ts", ".tsx", ".mts", ".cts"]
    }
  }
}

Enable debug logs:

{
  "env": {
    "OPENCODE_TSGO_DEBUG": "1"
  }
}

Files

• template/index.js: executable opencode LSP command to copy into your project.
• template/controller.js: restart/replay logic.
• template/parser.js: minimal LSP content-length frame parser.
• template/types.js: empty runtime module emitted from TypeScript types.
• template-typescript/: TypeScript source used to generate the JavaScript template.