LunarVim.LunarVim/ftplugin/dart.lua

require'lspconfig'.dartls.setup{
    cmd = { "dart", O.lang.dart.sdk_path, "--lsp" },
    on_attach = require'lsp'.common_on_attach,
    init_options = {
      closingLabels = false,
      flutterOutline = false,
      onlyAnalyzeProjectsWithOpenFiles = false,
      outline = false,
      suggestFromUnimportedLibraries = true
    }
}