fix: load on specific keymap

lua/pckr/loader/keys.lua

@@ -14,21 +14,19 @@ return function(mode, key, rhs, opts)
     opts.silent = true
   end
 
-  rhs = rhs
-    or function()
+  --- @param loader fun()
+  return function(loader)
+    local rhs_func = function()
+      -- always delete the mapping immediately to prevent recursive mappings
+      vim.keymap.del(mode, key, opts)
+      loader()
       if mode == 'n' then
         vim.api.nvim_input(key)
       else
-        vim.api.nvim_feedkeys(key, mode, false)
+        vim.api.nvim_feedkeys(key, '', false)
       end
     end
 
-  --- @param loader fun()
-  return function(loader)
-    -- TODO(lewis6991): detect is mapping already exists
-    -- TODO(Zhou-Yicheng): delete mapping if exists
-    -- vim.keymap.del(mode, key)
-    loader()
-    vim.keymap.set(mode, key, rhs, opts)
+    vim.keymap.set(mode, key, rhs_func, opts)
   end
 end