Beyond try_node_modules -- an option to *only* format when the formatter is installed

[snoblenet]

I'd like to only automatically apply Prettier formatting when it is installed in the current repository's node modules. I've found try_node_modules, but I'm looking for something like only_node_modules. How can I solve this problem using the current functionality of formatter.nvim? If it can't be solved using the current functionality of formatter.nvim, can this issue be considered a feature request? Thank you.

[snoblenet]

For now, I'm experimenting with this:

local prettierConfig = function(ext)
      return function()
        local node_modules = vim.inspect(vim.fs.find('node_modules'))
        local prettier = vim.fs.find(node_modules .. '/.bin/prettier')

        if not prettier then
          return null
        end

        return {
          exe = 'prettier',
          args = {
            '--stdin-filepath',
            vim.fn.shellescape(vim.api.nvim_buf_get_name(0)),
          },
          stdin = true,
          try_node_modules = true,
        }
      end
    end

[snoblenet]

currently

local Path = require('plenary.path')

return {
  'mhartington/formatter.nvim',
  dependencies = { 'nvim-lua/plenary.nvim' },
  config = function()
    local prettierConfig = function(ext)
      return function()
        local prettier = Path:new('.')
          :find_upwards('node_modules')
          :find_upwards('.bin')
          :find_upwards('prettier')
          :absolute()

        if not prettier then
          return null
        end

        return {
          exe = prettier,
          args = {
            '--stdin-filepath',
            vim.fn.shellescape(vim.api.nvim_buf_get_name(0)),
          },
          stdin = true,
        }
      end
    end

    -- etc

    require('formatter').setup({
      filetype = {
        typescript = { prettierConfig('ts') },
        -- etc
      },
      logging = false,
    })

    vim.api.nvim_create_autocmd({ 'BufWritePost' }, {
      command = 'silent! FormatWrite',
      pattern = {
        '/Users/steven/code/*/*',
        -- etc
      },
    })
  end,
}