diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ebc499c..65d4a9e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -6,6 +6,9 @@ on:
   pull_request:
     types: [opened, synchronize]
 
+env:
+  LUA_LS_VERSION: 3.7.4
+
 concurrency:
   group: github.head_ref
   cancel-in-progress: true
@@ -64,12 +67,29 @@ jobs:
           path: _neovim
           key: ${{ runner.os }}-x64-${{ hashFiles('todays-date') }}
 
+      - name: restore luals cache
+        uses: actions/cache@v4
+        id: cache
+        with:
+          path: .ci/lua-ls
+          key: ${{ env.LUA_LS_VERSION }}
+
+      - name: setup luals
+        if: ${{ steps.cache.outputs.cache-hit != 'true' }}
+        run: mkdir -p .ci/lua-ls && curl -sL "https://github.com/LuaLS/lua-language-server/releases/download/${{ env.LUA_LS_VERSION }}/lua-language-server-${{ env.LUA_LS_VERSION }}-linux-x64.tar.gz" | tar xzf - -C "${PWD}/.ci/lua-ls"
+
       - name: setup neovim
         uses: rhysd/action-setup-vim@v1
         with:
           neovim: true
           version: ${{ matrix.neovim_version }}
 
+      - name: run luals
+        run: |
+          export PATH="${PWD}/.ci/lua-ls/bin:${PATH}"
+          nvim --version
+          make luals-ci
+
       - name: run tests
         run: make test-ci
 
diff --git a/.gitignore b/.gitignore
index 4b3caad..929091c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,3 @@
 deps
 **.DS_Store
-.luarc.json
+.ci
diff --git a/.luacheckrc b/.luacheckrc
new file mode 100644
index 0000000..084dc49
--- /dev/null
+++ b/.luacheckrc
@@ -0,0 +1,4 @@
+globals = { "vim", "MiniTest" }
+max_line_length = false
+
+exclude_files = { "deps" }
diff --git a/.luarc.json b/.luarc.json
new file mode 100644
index 0000000..1b8485f
--- /dev/null
+++ b/.luarc.json
@@ -0,0 +1,11 @@
+{
+    "runtime.version": "LuaJIT",
+    "diagnostics.globals": [
+        "vim",
+        "MiniTest"
+    ],
+    "workspace.library": [
+        "/usr/local/share/nvim/runtime/lua",
+        ".ci/neovim/share/nvim/runtime/lua"
+    ]
+}
diff --git a/Makefile b/Makefile
index afcc684..9b73bb5 100644
--- a/Makefile
+++ b/Makefile
@@ -2,9 +2,10 @@
 
 TESTFILES=options mappings API splits tabs integrations buffers colors autocmds scratchpad commands
 
-all:
+all: documentation lint luals test
 
 test:
+	make deps
 	nvim --version | head -n 1 && echo ''
 	nvim --headless --noplugin -u ./scripts/minimal_init.lua \
 		-c "lua MiniTest.run({ execute = { reporter = MiniTest.gen_reporter.stdout({ group_depth = 2 }) } })"
@@ -21,22 +22,19 @@ $(addprefix test-, $(TESTFILES)): test-%:
 	nvim --version | head -n 1 && echo ''
 	nvim --headless --noplugin -u ./scripts/minimal_init.lua \
 		-c "lua MiniTest.run_file('tests/test_$*.lua', { execute = { reporter = MiniTest.gen_reporter.stdout({ group_depth = 2 }) } })"
-
 deps:
-	@mkdir -p deps
+	git clone --depth 1 https://github.com/nvim-lua/plenary.nvim deps/plenary
 	git clone --depth 1 https://github.com/echasnovski/mini.nvim deps/mini.nvim
 	git clone --depth 1 https://github.com/nvim-treesitter/nvim-treesitter deps/nvim-treesitter
 	git clone --depth 1 https://github.com/nvim-treesitter/playground deps/playground
 	git clone --depth 1 https://github.com/nvim-neotest/neotest deps/neotest
 	git clone --depth 1 https://github.com/nvim-tree/nvim-tree.lua deps/nvimtree
 	git clone --depth 1 https://github.com/nvim-neo-tree/neo-tree.nvim deps/neo-tree
-	git clone --depth 1 https://github.com/nvim-lua/plenary.nvim deps/plenary
 	git clone --depth 1 https://github.com/nvim-tree/nvim-web-devicons deps/nvim-web-devicons
 	git clone --depth 1 https://github.com/MunifTanjim/nui.nvim deps/nui
 	git clone --depth 1 https://github.com/antoinemadec/FixCursorHold.nvim deps/fixcursorhold
 	git clone --depth 1 https://github.com/mfussenegger/nvim-dap deps/nvimdap
 	git clone --depth 1 https://github.com/rcarriga/nvim-dap-ui deps/nvimdapui
-	
 
 test-ci: deps test
 
@@ -47,3 +45,13 @@ documentation-ci: deps documentation
 
 lint:
 	stylua . -g '*.lua' -g '!deps/' -g '!nightly/'
+
+luals-ci:
+	rm -rf .ci/lua-ls/log
+	lua-language-server --configpath .luarc.json --logpath .ci/lua-ls/log --check .
+	[ -f .ci/lua-ls/log/check.json ] && { cat .ci/lua-ls/log/check.json 2>/dev/null; exit 1; } || true
+
+luals:
+	mkdir -p .ci/lua-ls
+	curl -sL "https://github.com/LuaLS/lua-language-server/releases/download/3.7.4/lua-language-server-3.7.4-darwin-x64.tar.gz" | tar xzf - -C "${PWD}/.ci/lua-ls"
+	make luals-ci
diff --git a/tests/test_buffers.lua b/tests/test_buffers.lua
index bef3253..2fea2ca 100644
--- a/tests/test_buffers.lua
+++ b/tests/test_buffers.lua
@@ -220,7 +220,7 @@ T["curr"]["closing `curr` window without any other window quits Neovim"] = funct
 
     -- neovim is closed, so it errors
     Helpers.expect.error(function()
-        helpers.winsInTab(child)
+        Helpers.winsInTab(child)
     end)
 end