added missing module.lua

lua/fzf-lua/providers/module.lua

@@ -0,0 +1,56 @@
+if not pcall(require, "fzf") then
+  return
+end
+
+local fzf = require "fzf"
+local action = require("fzf.actions").action
+local core = require "fzf-lua.core"
+local config = require "fzf-lua.config"
+local actions = require "fzf-lua.actions"
+
+local M = {}
+
+M.metatable = function(opts)
+
+  opts = config.getopts(opts, config.builtin, {
+    "prompt", "winopts", "actions",
+  })
+
+  if not opts.metatable then opts.metatable = getmetatable('').__index end
+
+  coroutine.wrap(function ()
+
+    local prev_act = action(function (args)
+      -- TODO: retreive method help
+      local help = ''
+      return string.format("%s:%s", args[1], help)
+    end)
+
+    local methods = {}
+    for k, _ in pairs(opts.metatable) do
+      if not opts.metatable_exclude or opts.metatable_exclude[k] == nil then
+        table.insert(methods, k)
+      end
+    end
+
+    table.sort(methods, function(a, b) return a<b end)
+
+    opts.preview = prev_act
+    opts.preview_window = 'hidden:down:10'
+    opts.nomulti = true
+
+    local selected = fzf.fzf(methods,
+      core.build_fzf_cli(opts),
+      config.winopts(opts.winopts))
+
+    if not selected then return end
+
+    actions.act(opts.actions, selected)
+
+    -- _G.dump(methods)
+
+  end)()
+
+end
+
+return M