Neovim Intellisense with coc

Conquerer of Completion

This plugin is too featureful (bloated) to explain in a single blog post

Good thing the author provided extensive documentation here

Install with vim-plug

" Stable version of coc
Plug 'neoclide/coc.nvim', {'branch': 'release'}

" Keeping up to date with master
Plug 'neoclide/coc.nvim', {'do': 'yarn install --frozen-lockfile'}

make sure you have yarn installed if you choose the second way

npm i -g yarn

Create a directory called plug-config and an entry for coc

mkdir ~/.config/nvim/plug-config
touch ~/.config/nvim/plug-config/coc.vim

Create basic config file

Head over to the readme and grab his example config

Add the following to your init.vim

source $HOME/.config/nvim/plug-config/coc.vim

Checking coc health

You can run :checkhealth and there should now be an entry for coc

You can use g:coc_node_path to point to your node executable

You can also run :CocInfo to get some useful info

Install extensions

You can install extensions for languages like this:

:CocInstall coc-json coc-python coc-snippets coc-vimlsp

There are many more extensions to choose from here:

coc-extensions

You can list all of the extension commands with:

:CocList commands

You can uninstall an extension with:

:CocUninstall coc-html

You can manage your extensions with:

:CocList extensions

Hit to see a list of options for each extension

Configuration

Run :CocConfig this will open the file ~/.config/nvim/coc-settings.json

here you can add language language servers

and other configuration like autoformat and adding a location for snippets (I'll go over snippets later)

<prer> {

 "coc.preferences.formatOnSaveFiletypes": ["css", "markdown", "javascript", "graphql", "html", "yaml",  "json", "python"],

 // python config
 "python.linting.enabled": true,
 "python.linting.pylintEnabled": true,

 "snippets.ultisnips.directories":
 [
   "UltiSnips",
   "~/.config/nvim/utils/snips"
 ]

} </pre> for more info on configuring your settings checkout this page

Optional install watchman

For watchman supprt install watchman

• Mac

brew install watchman

• Ubuntu

sudo apt install watchman

• Arch

yay -S watchman

Note

watchman can be a memory hog, to stop all watchman processes and free up some memory run

watchman watch-del-all

Automatically reinstall the extensions you use

If you use neovim and already have node installed, you can use the following script to reinstall your favorite extensions

#!/usr/bin/bash

set -o nounset    # error when referencing undefined variable
set -o errexit    # exit when command fails

# Install extensions
mkdir -p ~/.config/coc/extensions
cd ~/.config/coc/extensions
if [ ! -f package.json ]
then
  echo '{"dependencies":{}}'> package.json
fi
# Change extension names to the extensions you need
npm install coc-snippets coc-python coc-tsserver coc-html coc-css coc-json coc-yaml --global-style --ignore-scripts --no-bin-links --no-package-lock --only=prod