nvim.d/nvim/lua/autocommands.lua

vim.api.nvim_create_autocmd('BufWritePre', {
  pattern = '*.go',
  callback = function()
    vim.lsp.buf.code_action({ context = { only = { 'source.organizeImports' } }, apply = true })
  end
})

vim.api.nvim_create_autocmd('BufWritePost', {
  callback = function()
    local ok, lint = pcall(require, "lint")

    if not ok then
      return
    end

    lint.try_lint()
  end
})