Vim ≥ 9.0.0438•Neovim ≥ 0.8.0•Node.js ≥ 22.15.0

coc.nvim

Conquer of Completion

Intellisense engine for Vim and Neovim.

Free and open source under the MIT License.

Verify your versions, install coc.nvim, and add one language extension. Then use the TypeScript walkthrough to check a real type error and its correction, or follow the Python environment example.

1 Choose an editor2 Install coc.nvim3 Check language features

Get started

Native pack • Install & UpdateSource

curl -fsSL https://cocnvim.com/install-coc.sh | bash -s -- --editor=nvim

The installer checks Node.js and editor versions, shows the files it plans to change, backs up an existing native install, downloads the pre-built release branch, and adds the package-load line only after confirmation. See the Setup guide for editor-specific options.

Neovim + TypeScript setup · 3:58Open video

Where would you like to start?

Direct task pathways tailored for newcomers, power users, and plugin authors.

Quick start

New to coc.nvim

Guided installation and setup for your first language server.

Open guide

Interactive Tool

Configure coc.nvim

Customize completion behavior, diagnostics virtual text, and key mappings.

Open guide

100 Packages

Find an extension

Browse published language extensions, formatters, and utilities.

Open guide

Developer Hub

Build an extension

Create, debug, test, and publish an extension with the coc.nvim API.

Open guide

Core Capabilities

Common editing workflows exposed by coc.nvim and its configured providers.

Workflow Showcase

Asynchronous completion with fuzzy filtering

Use completion sources with type icons, parameter signatures, and adjacent floating documentation.

Background Node.js service for asynchronous work

Shared workflows across Vim 9 and Neovim

Cancellation and progress support for long-running operations

Read Complete code documentation

Configuration

~/.vimrc

1	" Tab for completion trigger and popup navigation
2	inoremap <silent><expr> <TAB>
3	\ coc#pum#visible() ? coc#pum#next(1) :
4	\ CheckBackspace() ? "\<Tab>" :
5	\ coc#refresh()
6	inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"
7
8	" Confirm selection on <CR>
9	inoremap <silent><expr> <CR> coc#pum#visible() ? coc#pum#confirm()
10	\: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"