TypeScript LSP

TypeScript LSP brings the full power of the TypeScript language server into Claude Code, giving Claude real-time type information as it writes and modifies your code.

Real-time type awareness

When Claude writes TypeScript, TypeScript LSP validates the code against your project’s type definitions immediately. Type mismatches, missing properties, and incorrect function signatures are caught before the code is returned to you — not after you run the compiler.

The plugin enables go-to-definition and find-references across your entire TypeScript project. When Claude needs to understand how a type is used or where an interface is defined, it can navigate the codebase the same way a developer would in an IDE.

tsconfig.json support

TypeScript LSP reads your existing tsconfig.json, respecting strict mode settings, path aliases, and lib configurations. Claude writes code that compiles under your exact project settings, not a generic baseline.

With 182,000+ installs, TypeScript LSP is the standard language integration for TypeScript projects in Claude Code.

Features

Live type checking

Runs the TypeScript compiler on your codebase and surfaces type errors in real-time as Claude writes code.

Go-to-definition

Navigate to type definitions, interface declarations, and imported symbols across your entire project.

Find references

Locate every usage of a type, function, or variable to understand impact before making changes.

IntelliSense-style completions

Type-aware completions that respect your project tsconfig.json and installed type definitions.

Install