How to add new TypeScript 7 Language server to Neovim

#neovim #javascript #typescript #webdev

Microsoft has released the stable version of their new TypeScript compiler written golang that is 10x faster than the previous TypeScript based implimentation on benchmarks.

This also comes with the Language server built in and we can plug it into Neovim right now!

In this article, I will be showing how to plug it to the Neovim's built in LSP client.

Prerequisites

Neovim v11 or above
npm (or any other node package manager)

Steps

Download and install the new typescript version from npm registry.

npm i -g typescript

Check version. It should show v7.0.0 or above. (the new executable uses the name tsc)

tsc --version

Add the server to the init.lua file or define it in a new file and import to init.lua.

-- define the LSP server
vim.lsp.config['tsc'] = {
    cmd = {'tsc', '--lsp', '--stdio'},
    filetypes = {'javascript', 'javascriptreact', 'typescript', 'typescriptreact'},
    root_markers = {'package.json', 'tsconfig.json', '.git'},
}

-- enable
vim.lsp.enable('tsc')