perf(validate): use lighter version

- Also fix `vim.validate()` for PUC Lua when showing errors for values
  that aren't string or number.

runtime/lua/vim/lsp.lua

@@ -86,7 +86,7 @@ lsp._request_name_to_capability = {
 ---@param bufnr (integer|nil) Buffer number to resolve. Defaults to current buffer
 ---@return integer bufnr
 local function resolve_bufnr(bufnr)
-  validate({ bufnr = { bufnr, 'n', true } })
+  validate('bufnr', bufnr, 'number', true)
   if bufnr == nil or bufnr == 0 then
     return api.nvim_get_current_buf()
   end
@@ -630,10 +630,8 @@ end
 ---@param client_id (integer) Client id
 ---@return boolean success `true` if client was attached successfully; `false` otherwise
 function lsp.buf_attach_client(bufnr, client_id)
-  validate({
-    bufnr = { bufnr, 'n', true },
-    client_id = { client_id, 'n' },
-  })
+  validate('bufnr', bufnr, 'number', true)
+  validate('client_id', client_id, 'number')
   bufnr = resolve_bufnr(bufnr)
   if not api.nvim_buf_is_loaded(bufnr) then
     log.warn(string.format('buf_attach_client called on unloaded buffer (id: %d): ', bufnr))
@@ -669,10 +667,8 @@ end
 ---@param bufnr integer Buffer handle, or 0 for current
 ---@param client_id integer Client id
 function lsp.buf_detach_client(bufnr, client_id)
-  validate({
-    bufnr = { bufnr, 'n', true },
-    client_id = { client_id, 'n' },
-  })
+  validate('bufnr', bufnr, 'number', true)
+  validate('client_id', client_id, 'number')
   bufnr = resolve_bufnr(bufnr)
 
   local client = all_clients[client_id]
@@ -773,7 +769,7 @@ end
 ---@param filter? vim.lsp.get_clients.Filter
 ---@return vim.lsp.Client[]: List of |vim.lsp.Client| objects
 function lsp.get_clients(filter)
-  validate({ filter = { filter, 't', true } })
+  validate('filter', filter, 'table', true)
 
   filter = filter or {}
 
@@ -870,12 +866,10 @@ api.nvim_create_autocmd('VimLeavePre', {
 ---cancel all the requests. You could instead
 ---iterate all clients and call their `cancel_request()` methods.
 function lsp.buf_request(bufnr, method, params, handler, on_unsupported)
-  validate({
-    bufnr = { bufnr, 'n', true },
-    method = { method, 's' },
-    handler = { handler, 'f', true },
-    on_unsupported = { on_unsupported, 'f', true },
-  })
+  validate('bufnr', bufnr, 'number', true)
+  validate('method', method, 'string')
+  validate('handler', handler, 'function', true)
+  validate('on_unsupported', on_unsupported, 'function', true)
 
   bufnr = resolve_bufnr(bufnr)
   local method_supported = false
@@ -992,10 +986,8 @@ end
 ---
 ---@return boolean success true if any client returns true; false otherwise
 function lsp.buf_notify(bufnr, method, params)
-  validate({
-    bufnr = { bufnr, 'n', true },
-    method = { method, 's' },
-  })
+  validate('bufnr', bufnr, 'number', true)
+  validate('method', method, 'string')
   local resp = false
   for _, client in ipairs(lsp.get_clients({ bufnr = bufnr })) do
     if client.rpc.notify(method, params) then