neovim/lua/plugin-config/null-ls.lua

local status, null_ls = pcall(require, "null-ls")
if not status then
  vim.notify("没有找到 null-ls")
  return
end

local group = vim.api.nvim_create_augroup("lsp_format_on_save", { clear = false })
local event = "BufWritePre" -- or "BufWritePost"
local async = event == "BufWritePost"

null_ls.setup({
  on_attach = function(client, bufnr)
    if client.supports_method("textDocument/formatting") then
      vim.keymap.set("n", "<Leader>f", function()
        vim.lsp.buf.format({ bufnr = vim.api.nvim_get_current_buf() })
      end, { buffer = bufnr, desc = "[lsp] format" })

      -- format on save
      vim.api.nvim_clear_autocmds({ buffer = bufnr, group = group })
      vim.api.nvim_create_autocmd(event, {
        buffer = bufnr,
        group = group,
        callback = function()
          vim.lsp.buf.format({ bufnr = bufnr, async = async })
        end,
        desc = "[lsp] format on save",
      })
    end

    if client.supports_method("textDocument/rangeFormatting") then
      vim.keymap.set("x", "<Leader>f", function()
        vim.lsp.buf.format({ bufnr = vim.api.nvim_get_current_buf() })
      end, { buffer = bufnr, desc = "[lsp] format" })
    end
  end,
})