# typescript-language-server/typescript-language-server

Unofficial TypeScript & JavaScript Language Server

Repository: https://github.com/typescript-language-server/typescript-language-server
Canonical: https://ross.abutalabs.com/products/typescript-language-server
Homepage: https://www.npmjs.com/package/typescript-language-server
Language: TypeScript
License: NOASSERTION
License Family: other
Topics: typescript, language-server, lsp, language-server-protocol, hacktoberfest
Last push: 2026-08-26T18:49:19+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 98, longevity 100
- inputs: {"age_days": 3260, "days_push": 7, "days_rel": 13, "gap_med": 22, "n_releases_24m": 12}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2553, forks 185 (observed 2026-08-28T04:07:00.612391+00:00)

## What it is
A community-maintained Language Server Protocol implementation for TypeScript and JavaScript, wrapping the tsserver API so any LSP-capable editor can get code intelligence. It provides features like completions, diagnostics, refactoring, inlay hints, and code lenses outside of VSCode.

## Use cases
- add TypeScript autocomplete and diagnostics to Neovim
- use TypeScript code intelligence in Emacs via LSP
- get go-to-definition and rename refactoring in Sublime Text for TS files
- run a language server for JavaScript in any LSP-compatible editor
- enable inlay hints and code lenses for TypeScript outside VSCode

## When to choose
- you use an editor other than VSCode that supports LSP and need TypeScript/JavaScript support
- you want standardized LSP features like diagnostics, completions, and refactoring for TS/JS projects

## When to avoid
- you work primarily in VSCode, which has built-in TypeScript support
- you need the upcoming native TypeScript 7 (typescript-go) language server instead

## Facets
- artifact type: service
- maturity: active
- function: editor, developer-tools, parser
- domain: developer-tools, programming-languages, text-editors
- platform: cross-platform, cli
- tags: lsp, language-server-protocol, typescript, javascript, tsserver, code-intelligence, nodejs

## Member repositories
- typescript-language-server/typescript-language-server (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:00.612391+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 2026-08-30T02:23:47.607267+00:00, confidence not recorded.
  - readme: https://github.com/typescript-language-server/typescript-language-server (fetched 2026-08-28T04:07:00.612391+00:00, sha 36ea77233a6a)
- Data as of 2026-08-30T08:39:29.467469+00:00.