starter/lua/plugins/null-ls.lua

local augroup = vim.api.nvim_create_augroup("LspFormatting", {})

return {
  "jose-elias-alvarez/null-ls.nvim",
  opts = function(_, opts)
    local nls = require("null-ls")
    -- table.insert(opts.sources, nls.builtins.formatting.prettierd)
  end,
  config = {
    on_attach = function(client, bufnr)
      if client.supports_method("textDocument/formatting") then
        vim.api.nvim_clear_autocmds({ group = augroup, buffer = bufnr })
        vim.api.nvim_create_autocmd("BufWritePre", {
          group = augroup,
          buffer = bufnr,
          callback = function()
            vim.lsp.buf.format()
          end,
        })
      end
    end,
  },
}