# microsoft/vscode-languageserver-node

Language server protocol implementation for VSCode. This allows implementing language services in JS/TS running on node.js

Repository: https://github.com/microsoft/vscode-languageserver-node
Canonical: https://ross.abutalabs.com/products/vscode-languageserver-node
Language: TypeScript
License: MIT
License Family: permissive
Last push: 2026-08-26T12:45:36+00:00

## Health v2 (maintenance only)
Score: 96/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 91, longevity 100
- inputs: {"age_days": 4017, "days_push": 7, "days_rel": 63, "gap_med": 0, "n_releases_24m": 12}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1783, forks 397 (observed 2026-08-28T04:05:35.772781+00:00)

## What it is
A set of npm modules implementing the Language Server Protocol (LSP) in TypeScript for Node.js, including client, server, protocol definition, and JSON-RPC messaging libraries. It enables building language services (completion, diagnostics, hover, etc.) that work with VSCode and other LSP-capable editors.

## Use cases
- implement a language server for a custom programming language
- build a VSCode extension that provides IntelliSense features
- add diagnostics and linting to an editor via LSP
- connect a VSCode extension to a language server over JSON-RPC
- implement text document syncing in an LSP server
- build editor tooling for a DSL in TypeScript

## When to choose
- you are writing a language server or LSP client in JavaScript or TypeScript
- you want official, well-maintained LSP bindings for Node.js
- you are building a VSCode extension that provides language features

## When to avoid
- you need LSP support in a language other than JS/TS (use a native LSP library instead)
- you are building a non-language-related VSCode extension
- you need a standalone editor rather than editor integration

## Facets
- artifact type: library
- maturity: stable
- function: rpc, sdk, developer-tools
- domain: developer-tools, apis, text-editors, parsers
- platform: cross-platform
- tags: language-server-protocol, lsp, vscode-extension, typescript, rpc, nodejs

## Member repositories
- microsoft/vscode-languageserver-node (main) score 96

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:35.772781+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:24:19.059325+00:00, confidence not recorded.
  - readme: https://github.com/microsoft/vscode-languageserver-node (fetched 2026-08-28T04:05:35.772781+00:00, sha 5db0ed5a4cc9)
- Data as of 2026-08-30T08:39:29.467469+00:00.