fix(lsp): use LSP method type in more places (#36069)

runtime/lua/vim/lsp/_meta.lua

@@ -5,7 +5,7 @@ error('Cannot require a meta file')
 ---@alias lsp.MultiHandler fun(results: table<integer,{err: lsp.ResponseError?, result: any, context: lsp.HandlerContext}>, context: lsp.HandlerContext, config?: table): ...any
 
 ---@class lsp.HandlerContext
----@field method string
+---@field method vim.lsp.protocol.Method
 ---@field client_id integer
 ---@field bufnr? integer
 ---@field params? any

runtime/lua/vim/lsp/_meta/protocol.lua

@@ -2433,7 +2433,7 @@ error('Cannot require a meta file')
 ---@field id string
 ---
 ---The method / capability to register for.
----@field method string
+---@field method vim.lsp.protocol.Method
 ---
 ---Options necessary for the registration.
 ---@field registerOptions? lsp.LSPAny
@@ -2446,7 +2446,7 @@ error('Cannot require a meta file')
 ---@field id string
 ---
 ---The method to unregister for.
----@field method string
+---@field method vim.lsp.protocol.Method
 
 ---The initialize parameters
 ---@class lsp._InitializeParams: lsp.WorkDoneProgressParams

runtime/lua/vim/lsp/diagnostic.lua

@@ -263,6 +263,7 @@ function M.on_diagnostic(error, result, ctx)
   if error ~= nil and error.code == protocol.ErrorCodes.ServerCancelled then
     if error.data == nil or error.data.retriggerRequest ~= false then
       local client = assert(lsp.get_client_by_id(ctx.client_id))
+      ---@diagnostic disable-next-line: param-type-mismatch
       client:request(ctx.method, ctx.params)
     end
     return

runtime/lua/vim/lsp/rpc.lua

@@ -115,7 +115,7 @@ end
 local default_dispatchers = {
   --- Default dispatcher for notifications sent to an LSP server.
   ---
-  ---@param method string The invoked LSP method
+  ---@param method vim.lsp.protocol.Method The invoked LSP method
   ---@param params table Parameters for the invoked LSP method
   notification = function(method, params)
     log.debug('notification', method, params)
@@ -123,7 +123,7 @@ local default_dispatchers = {
 
   --- Default dispatcher for requests sent to an LSP server.
   ---
-  ---@param method string The invoked LSP method
+  ---@param method vim.lsp.protocol.Method The invoked LSP method
   ---@param params table Parameters for the invoked LSP method
   ---@return any result (always nil for the default dispatchers)
   ---@return lsp.ResponseError error `vim.lsp.protocol.ErrorCodes.MethodNotFound`
@@ -226,7 +226,7 @@ end
 
 ---@package
 --- Sends a notification to the LSP server.
----@param method string The invoked LSP method
+---@param method vim.lsp.protocol.Method The invoked LSP method
 ---@param params any Parameters for the invoked LSP method
 ---@return boolean `true` if notification could be sent, `false` if not
 function Client:notify(method, params)
@@ -251,7 +251,7 @@ end
 ---@package
 --- Sends a request to the LSP server and runs {callback} upon response. |vim.lsp.rpc.request()|
 ---
----@param method string The invoked LSP method
+---@param method vim.lsp.protocol.Method The invoked LSP method
 ---@param params table? Parameters for the invoked LSP method
 ---@param callback fun(err?: lsp.ResponseError, result: any) Callback to invoke
 ---@param notify_reply_callback? fun(message_id: integer) Callback to invoke as soon as a request is no longer pending

src/gen/gen_lsp.lua

@@ -30,7 +30,7 @@ Options:
 --- @field messageDirection string
 --- @field clientCapability? string
 --- @field serverCapability? string
---- @field method string
+--- @field method vim.lsp.protocol.Method
 --- @field params? any
 --- @field proposed? boolean
 --- @field registrationMethod? string