Add an option to activate source only if a configuration is found in the project about null-ls.nvim HOT 4 OPEN

Neovim has various methods of reading files which you can use to read package.json and determine if the Prettier config key exists. Off the top of my head, you can use vim.fn.readfile() + vim.fn.json_decode() or luv + vim.json.decode() .

I wouldn't be opposed to a PR adding another helper to the utils object to facilitate this process, but I don't think I'd want to do anything beyond that as a default.

from null-ls.nvim.

I see. My initial thought is that it might have been a capability of most sources (I have no idea).

from null-ls.nvim.

As for a PR, I can try it. Just need to improve a bit my lua setup first

from null-ls.nvim.

Modified a bit my config to achieve the desired result:

local should_load_prettier = function(condition_utils)
  -- Check for config files
  if
    condition_utils.root_has_file({
      '.prettierrc',
      '.prettierrc.json',
      '.prettierrc.yml',
      '.prettierrc.yaml',
      '.prettierrc.json5',
      '.prettierrc.js',
      '.prettierrc.cjs',
      '.prettierrc.toml',
      'prettier.config.js',
      'prettier.config.cjs',
    })
  then
    return true
  end

  -- Check for package.json config entry
  if condition_utils.root_has_file({ 'package.json' }) then
    local package_json_path = utils.get_root() .. '/package.json'
    local package_json = vim.json.decode(table.concat(vim.fn.readfile(package_json_path)))
    return package_json['prettier'] ~= nil
  end

  return false
end

Thanks for the help. I don't know how common this use case would be, I personally found it pretty useful. Would you consider adding it to the docs? Or accept a PR doing so

from null-ls.nvim.