test: add luals checking

.gitignore

@@ -2,6 +2,8 @@ doc/tags
 
 scratch/dummy_ignored.txt
 
+luals
+
 nvim-test
 
 stylua

.luarc.json

@@ -15,6 +15,7 @@
     "checkThirdParty": false
   },
   "diagnostics": {
+    "libraryFiles": "Disable",
     "groupFileStatus": {
       "strict": "Opened",
       "strong": "Opened",

Makefile

@@ -75,3 +75,20 @@ build: gen_help stylua-run
 doc-check: gen_help
 	git diff --exit-code -- doc
 
+LUALS_VERSION := 3.7.4
+LUALS_TARBALL := lua-language-server-$(LUALS_VERSION)-$(shell uname -s)-$(shell uname -m).tar.gz
+LUALS_URL := https://github.com/LuaLS/lua-language-server/releases/download/$(LUALS_VERSION)/$(LUALS_TARBALL)
+
+luals:
+	wget $(LUALS_URL)
+	mkdir luals
+	tar -xf $(LUALS_TARBALL) -C luals
+	rm -rf $(LUALS_TARBALL)
+
+.PHONY: luals-check
+luals-check: luals nvim-test
+	VIMRUNTIME=$(XDG_DATA_HOME)/nvim-test/nvim-test-$(NVIM_TEST_VERSION)/share/nvim/runtime \
+		lua-language-server \
+			--logpath=. \
+			--configpath=../.luarc.json \
+			--check=lua

lua/gitsigns/actions.lua

@@ -268,6 +268,8 @@ end
 ---               Stage all contiguous hunks. Only useful if 'diff_opts'
 ---               contains `linematch`. Defaults to `true`.
 M.stage_hunk = mk_repeatable(async.create(2, function(range, opts)
+  --- @cast range {[1]: integer, [2]: integer}?
+
   opts = opts or {}
   local bufnr = current_buf()
   local bcache = cache[bufnr]
@@ -334,6 +336,8 @@ end
 ---       Stage all contiguous hunks. Only useful if 'diff_opts'
 ---       contains `linematch`. Defaults to `true`.
 M.reset_hunk = mk_repeatable(async.create(2, function(range, opts)
+  --- @cast range {[1]: integer, [2]: integer}?
+
   opts = opts or {}
   local bufnr = current_buf()
   local bcache = cache[bufnr]

lua/gitsigns/cli/argparse.lua

@@ -6,6 +6,7 @@ end
 
 -- Return positional arguments and named arguments
 --- @param x string
+--- @return string[], table<string,string|boolean>
 function M.parse_args(x)
   --- @type string[], table<string,string|boolean>
   local pos_args, named_args = {}, {}

lua/gitsigns/debug.lua

@@ -6,6 +6,7 @@ local M = {}
 --- @param path string[]
 --- @return any
 local function process(raw_item, path)
+  --- @diagnostic disable-next-line:undefined-field
   if path[#path] == vim.inspect.METATABLE then
     return nil
   elseif type(raw_item) == 'function' then

lua/gitsigns/hunks.lua

@@ -255,8 +255,8 @@ function M.create_patch(relpath, hunks, mode_bits, invert)
     local now_lines = process_hunk.added.lines
 
     if invert then
-      pre_count, now_count = now_count, pre_count
-      pre_lines, now_lines = now_lines, pre_lines
+      pre_count, now_count = now_count, pre_count --- @type integer, integer
+      pre_lines, now_lines = now_lines, pre_lines --- @type string[], string[]
     end
 
     table.insert(

lua/gitsigns/system.lua

@@ -5,7 +5,7 @@ local M = {}
 local system = vim.system or require('gitsigns.system.compat')
 
 --- @param cmd string[]
---- @param opts SystemOpts
+--- @param opts vim.SystemOpts
 --- @param on_exit fun(obj: vim.SystemCompleted)
 --- @return vim.SystemObj
 function M.system(cmd, opts, on_exit)