From f0d0be3fc5b250017f1de946d85a396a948bb08c Mon Sep 17 00:00:00 2001
From: Lewis Russell <lewis6991@gmail.com>
Date: Mon, 23 Sep 2024 16:01:45 +0100
Subject: [PATCH] lint: cleanup unused code and redefined locals

---
 .luarc.json                                   |  3 +-
 script/core/code-action.lua                   | 10 ++--
 script/core/command/autoRequire.lua           |  1 -
 script/core/command/exportDocument.lua        |  1 -
 script/core/command/reloadFFIMeta.lua         |  2 +-
 script/core/completion/completion.lua         | 20 ++++---
 script/core/completion/keyword.lua            |  1 -
 script/core/definition.lua                    |  8 +--
 .../core/diagnostics/cast-type-mismatch.lua   |  1 -
 .../core/diagnostics/different-requires.lua   |  1 -
 .../core/diagnostics/duplicate-set-field.lua  |  2 -
 script/core/diagnostics/missing-fields.lua    |  6 +--
 .../diagnostics/missing-local-export-doc.lua  |  2 +-
 .../core/diagnostics/param-type-mismatch.lua  |  5 +-
 .../diagnostics/unbalanced-assignments.lua    |  3 +-
 script/core/diagnostics/undefined-global.lua  |  3 --
 .../diagnostics/unknown-cast-variable.lua     |  1 -
 script/core/diagnostics/unknown-operator.lua  |  3 --
 script/core/folding.lua                       | 28 +++++-----
 script/core/highlight.lua                     |  4 +-
 script/core/hint.lua                          |  2 +-
 script/core/hover/description.lua             | 14 ++---
 script/core/hover/table.lua                   |  1 -
 script/core/implementation.lua                |  2 -
 script/core/look-backward.lua                 |  2 -
 script/core/rename.lua                        |  4 +-
 script/core/semantic-tokens.lua               | 21 ++++----
 script/core/type-definition.lua               |  8 +--
 script/core/type-formatting.lua               |  7 +--
 script/core/workspace-symbol.lua              |  5 +-
 script/doctor.lua                             | 52 +++++++++----------
 script/file-uri.lua                           |  2 +-
 script/files.lua                              |  2 -
 script/fs-utility.lua                         | 14 +++--
 script/gc.lua                                 |  2 +-
 script/glob/gitignore.lua                     | 18 +++----
 script/lazytable.lua                          |  2 -
 script/lclient.lua                            |  1 -
 script/library.lua                            |  4 +-
 script/parser/compile.lua                     |  5 +-
 script/parser/guide.lua                       |  6 +--
 script/parser/luadoc.lua                      |  6 +--
 script/parser/relabel.lua                     |  1 -
 script/plugin.lua                             |  4 +-
 script/plugins/astHelper.lua                  |  1 -
 script/plugins/ffi/c-parser/ctypes.lua        |  8 +--
 script/plugins/ffi/c-parser/util.lua          |  2 +-
 script/plugins/ffi/cdefRerence.lua            |  2 +-
 script/plugins/ffi/init.lua                   |  9 ++--
 script/plugins/ffi/searchCode.lua             | 10 ++--
 script/plugins/nodeHelper.lua                 |  5 +-
 script/provider/build-meta.lua                |  2 -
 script/provider/capability.lua                |  2 -
 script/provider/code-lens.lua                 |  2 +-
 script/provider/completion.lua                |  4 +-
 script/provider/diagnostic.lua                |  2 +-
 script/provider/formatting.lua                |  5 +-
 script/provider/inlay-hint.lua                |  2 +-
 script/provider/name-style.lua                |  2 +-
 script/provider/provider.lua                  | 13 +++--
 script/provider/semantic-tokens.lua           |  2 +-
 script/provider/spell.lua                     |  2 -
 script/pub/report.lua                         |  1 -
 script/service/service.lua                    |  1 -
 script/text-merger.lua                        |  1 -
 script/tracy.lua                              |  4 +-
 script/utility.lua                            |  1 -
 script/vm/compiler.lua                        | 11 ++--
 script/vm/doc.lua                             |  7 ++-
 script/vm/field.lua                           |  2 +-
 script/vm/infer.lua                           | 18 +++----
 script/vm/node.lua                            |  2 +-
 script/vm/visible.lua                         |  4 +-
 script/workspace/loading.lua                  |  1 -
 script/workspace/require-path.lua             |  4 +-
 75 files changed, 181 insertions(+), 241 deletions(-)

diff --git a/.luarc.json b/.luarc.json
index 7e366901d..b56692448 100644
--- a/.luarc.json
+++ b/.luarc.json
@@ -20,7 +20,8 @@
             "unused": "Any"
         },
         "ignoredFiles": "Opened",
-        "libraryFiles": "Opened"
+        "libraryFiles": "Opened",
+        "unusedLocalExclude": [ "_*" ]
     },
     "runtime": {
         "version": "Lua 5.4",
diff --git a/script/core/code-action.lua b/script/core/code-action.lua
index 720cd4c49..3031971ff 100644
--- a/script/core/code-action.lua
+++ b/script/core/code-action.lua
@@ -1,13 +1,11 @@
 local files     = require 'files'
 local lang      = require 'language'
 local util      = require 'utility'
-local sp        = require 'bee.subprocess'
 local guide     = require "parser.guide"
 local converter = require 'proto.converter'
 local autoreq   = require 'core.completion.auto-require'
 local rpath     = require 'workspace.require-path'
 local furi      = require 'file-uri'
-local undefined = require 'core.diagnostics.undefined-global'
 local vm        = require 'vm'
 
 ---@param uri  uri
@@ -51,7 +49,7 @@ local function checkDisableByLuaDocExits(uri, row, mode, code)
     return nil
 end
 
-local function checkDisableByLuaDocInsert(uri, row, mode, code)
+local function checkDisableByLuaDocInsert(_uri, row, mode, code)
     return {
         start   = guide.positionOf(row, 0),
         finish  = guide.positionOf(row, 0),
@@ -242,7 +240,7 @@ local function solveSyntaxByFix(uri, err, results)
     }
 end
 
-local function solveSyntaxUnicodeName(uri, err, results)
+local function solveSyntaxUnicodeName(uri, _err, results)
     results[#results+1] = {
         title   = lang.script('ACTION_RUNTIME_UNICODE_NAME'),
         kind    = 'quickfix',
@@ -321,7 +319,7 @@ local function solveAmbiguity1(uri, diag, results)
     }
 end
 
-local function solveTrailingSpace(uri, diag, results)
+local function solveTrailingSpace(uri, _diag, results)
     results[#results+1] = {
         title = lang.script.ACTION_REMOVE_SPACE,
         kind = 'quickfix',
@@ -697,7 +695,7 @@ local function checkMissingRequire(results, uri, start, finish)
     end
 
     local function addRequires(global, endpos)
-        autoreq.check(state, global, endpos, function(moduleFile, stemname, targetSource)
+        autoreq.check(state, global, endpos, function(moduleFile, _stemname, _targetSource)
             local visiblePaths = rpath.getVisiblePath(uri, furi.decode(moduleFile))
             if not visiblePaths or #visiblePaths == 0 then return end
 
diff --git a/script/core/command/autoRequire.lua b/script/core/command/autoRequire.lua
index 9f3ff9297..edf769c50 100644
--- a/script/core/command/autoRequire.lua
+++ b/script/core/command/autoRequire.lua
@@ -1,6 +1,5 @@
 local files  = require 'files'
 local furi   = require 'file-uri'
-local config = require 'config'
 local rpath  = require 'workspace.require-path'
 local client = require 'client'
 local lang   = require 'language'
diff --git a/script/core/command/exportDocument.lua b/script/core/command/exportDocument.lua
index 39832856b..e145e6222 100644
--- a/script/core/command/exportDocument.lua
+++ b/script/core/command/exportDocument.lua
@@ -2,7 +2,6 @@ local doc    = require 'cli.doc'
 local client = require 'client'
 local furi   = require 'file-uri'
 local lang   = require 'language'
-local ws     = require 'workspace'
 local files  = require 'files'
 
 ---@async
diff --git a/script/core/command/reloadFFIMeta.lua b/script/core/command/reloadFFIMeta.lua
index d00929adb..afb56eac9 100644
--- a/script/core/command/reloadFFIMeta.lua
+++ b/script/core/command/reloadFFIMeta.lua
@@ -32,7 +32,7 @@ return function (uri)
         return
     end
 
-    for i, v in ipairs(refs) do
+    for _, v in ipairs(refs) do
         local target_uri = v.uri
         local codes = searchCode(refs, target_uri)
         if not codes then
diff --git a/script/core/completion/completion.lua b/script/core/completion/completion.lua
index 10d26a416..e46c03c4e 100644
--- a/script/core/completion/completion.lua
+++ b/script/core/completion/completion.lua
@@ -448,7 +448,7 @@ local function checkModule(state, word, position, results)
     end)
 end
 
-local function checkFieldFromFieldToIndex(state, name, src, parent, word, startPos, position)
+local function checkFieldFromFieldToIndex(state, name, parent, word, position)
     if name:match(guide.namePatternFull) then
         if not name:match '[\x80-\xff]'
         or config.get(state.uri, 'Lua.runtime.unicodeName') then
@@ -499,7 +499,7 @@ local function checkFieldFromFieldToIndex(state, name, src, parent, word, startP
     return textEdit, additionalTextEdits
 end
 
-local function checkFieldThen(state, name, src, word, startPos, position, parent, oop, results)
+local function checkFieldThen(state, name, src, word, position, parent, oop, results)
     local value = vm.getObjectFunctionValue(src) or src
     local kind = define.CompletionItemKind.Field
     if (value.type == 'function' and not vm.isVarargFunctionWithOverloads(value))
@@ -542,7 +542,7 @@ local function checkFieldThen(state, name, src, word, startPos, position, parent
             newText = name:sub(#str[2] + 1, - #str[2] - 1),
         }
     else
-        textEdit, additionalTextEdits = checkFieldFromFieldToIndex(state, name, src, parent, word, startPos, position)
+        textEdit, additionalTextEdits = checkFieldFromFieldToIndex(state, name, parent, word, position)
     end
     results[#results+1] = {
         label      = name,
@@ -632,7 +632,7 @@ local function checkFieldOfRefs(refs, state, word, startPos, position, parent, o
     local fieldResults = {}
     for name, src in util.sortPairs(fields) do
         if src then
-            checkFieldThen(state, name, src, word, startPos, position, parent, oop, fieldResults)
+            checkFieldThen(state, name, src, word, position, parent, oop, fieldResults)
             await.delay()
         end
     end
@@ -1256,12 +1256,10 @@ local function insertDocEnum(state, pos, doc, enums)
     return enums
 end
 
----@param state     parser.state
----@param pos       integer
 ---@param doc       vm.node.object
 ---@param enums     table[]
 ---@return table[]?
-local function insertDocEnumKey(state, pos, doc, enums)
+local function insertDocEnumKey(doc, enums)
     local tbl = doc.bindSource
     if not tbl then
         return nil
@@ -1357,12 +1355,12 @@ local function insertEnum(state, pos, src, enums, isInArray, mark)
     elseif src.type == 'doc.enum' then
         ---@cast src parser.object
         if vm.docHasAttr(src, 'key') then
-            insertDocEnumKey(state, pos, src, enums)
+            insertDocEnumKey(src, enums)
         else
             insertDocEnum(state, pos, src, enums)
         end
     elseif isInArray and src.type == 'doc.type.array' then
-        for i, d in ipairs(vm.getDefs(src.node)) do
+        for _, d in ipairs(vm.getDefs(src.node)) do
             insertEnum(state, pos, d, enums, isInArray, mark)
         end
     elseif src.type == 'global' and src.cate == 'type' then
@@ -2082,7 +2080,7 @@ local function tryluaDocByErr(state, position, err, docState, results)
         end
         local label = {}
         local insertText = {}
-        for i, arg in ipairs(func.args) do
+        for _, arg in ipairs(func.args) do
             if arg[1] and arg.type ~= 'self' then
                 label[#label+1] = arg[1]
                 if #label == 1 then
@@ -2098,7 +2096,7 @@ local function tryluaDocByErr(state, position, err, docState, results)
             insertTextFormat = 2,
             insertText       = table.concat(insertText, '\n'),
         }
-        for i, arg in ipairs(func.args) do
+        for _, arg in ipairs(func.args) do
             if arg[1] then
                 results[#results+1] = {
                     label  = arg[1],
diff --git a/script/core/completion/keyword.lua b/script/core/completion/keyword.lua
index aa0e21487..1c0199a47 100644
--- a/script/core/completion/keyword.lua
+++ b/script/core/completion/keyword.lua
@@ -1,5 +1,4 @@
 local define     = require 'proto.define'
-local files      = require 'files'
 local guide      = require 'parser.guide'
 local config     = require 'config'
 local util       = require 'utility'
diff --git a/script/core/definition.lua b/script/core/definition.lua
index 3619916e6..75a1433f5 100644
--- a/script/core/definition.lua
+++ b/script/core/definition.lua
@@ -59,7 +59,7 @@ local accept = {
     ['doc.field.name']   = true,
 }
 
-local function checkRequire(source, offset)
+local function checkRequire(source)
     if source.type ~= 'string' then
         return nil
     end
@@ -141,14 +141,14 @@ return function (uri, offset)
     local results = {}
     local uris = checkRequire(source)
     if uris then
-        for i, uri in ipairs(uris) do
+        for _, uri0 in ipairs(uris) do
             results[#results+1] = {
-                uri    = uri,
+                uri    = uri0,
                 source = source,
                 target = {
                     start  = 0,
                     finish = 0,
-                    uri    = uri,
+                    uri    = uri0,
                 }
             }
         end
diff --git a/script/core/diagnostics/cast-type-mismatch.lua b/script/core/diagnostics/cast-type-mismatch.lua
index d86443c57..c91b1efd1 100644
--- a/script/core/diagnostics/cast-type-mismatch.lua
+++ b/script/core/diagnostics/cast-type-mismatch.lua
@@ -1,5 +1,4 @@
 local files   = require 'files'
-local guide   = require 'parser.guide'
 local lang    = require 'language'
 local vm      = require 'vm'
 local await   = require 'await'
diff --git a/script/core/diagnostics/different-requires.lua b/script/core/diagnostics/different-requires.lua
index 22e3e6810..6e86e0038 100644
--- a/script/core/diagnostics/different-requires.lua
+++ b/script/core/diagnostics/different-requires.lua
@@ -1,7 +1,6 @@
 local files   = require 'files'
 local guide   = require 'parser.guide'
 local lang    = require 'language'
-local config  = require 'config'
 local vm      = require 'vm'
 local rpath   = require 'workspace.require-path'
 
diff --git a/script/core/diagnostics/duplicate-set-field.lua b/script/core/diagnostics/duplicate-set-field.lua
index 2705c2d4b..97d50f1da 100644
--- a/script/core/diagnostics/duplicate-set-field.lua
+++ b/script/core/diagnostics/duplicate-set-field.lua
@@ -1,6 +1,5 @@
 local files    = require 'files'
 local lang     = require 'language'
-local define   = require 'proto.define'
 local guide    = require 'parser.guide'
 local vm       = require 'vm'
 local await    = require 'await'
@@ -24,7 +23,6 @@ local function getTopFunctionOfIf(source)
         end
         source = source.parent
     end
-    return nil
 end
 
 ---@async
diff --git a/script/core/diagnostics/missing-fields.lua b/script/core/diagnostics/missing-fields.lua
index 5ce650ec6..089d14d43 100644
--- a/script/core/diagnostics/missing-fields.lua
+++ b/script/core/diagnostics/missing-fields.lua
@@ -35,7 +35,7 @@ return function (uri, callback)
                 return
             end
         end
-        
+
         local myKeys
         local warnings = {}
         for className, samedefs in pairs(sortedDefs) do
@@ -44,7 +44,7 @@ return function (uri, callback)
                 if not def.fields or #def.fields == 0 then
                     goto continue
                 end
-                
+
                 if not myKeys then
                     myKeys = {}
                     for _, field in ipairs(src) do
@@ -82,7 +82,7 @@ return function (uri, callback)
             if #missedKeys == 0 then
                 return
             end
-            
+
             warnings[#warnings+1] = lang.script('DIAG_MISSING_FIELDS', className, table.concat(missedKeys, ', '))
         end
 
diff --git a/script/core/diagnostics/missing-local-export-doc.lua b/script/core/diagnostics/missing-local-export-doc.lua
index da413961e..b1a9e217c 100644
--- a/script/core/diagnostics/missing-local-export-doc.lua
+++ b/script/core/diagnostics/missing-local-export-doc.lua
@@ -41,7 +41,7 @@ return function (uri, callback)
         await.delay()
         --table
 
-        for i, ret in ipairs(source) do
+        for _, ret in ipairs(source) do
             if ret.type == 'getlocal' then
                 if ret.node.value and ret.node.value.type == 'table' then
                     findSetField(state.ast, ret[1], callback)
diff --git a/script/core/diagnostics/param-type-mismatch.lua b/script/core/diagnostics/param-type-mismatch.lua
index acbf9c8c2..d97bb76d1 100644
--- a/script/core/diagnostics/param-type-mismatch.lua
+++ b/script/core/diagnostics/param-type-mismatch.lua
@@ -32,9 +32,8 @@ end
 
 ---@param funcNode vm.node
 ---@param i integer
----@param uri uri
 ---@return vm.node?
-local function getDefNode(funcNode, i, uri)
+local function getDefNode(funcNode, i)
     local defNode = vm.createNode()
     for src in funcNode:eachObject() do
         if src.type == 'function'
@@ -93,7 +92,7 @@ return function (uri, callback)
             if not refNode then
                 goto CONTINUE
             end
-            local defNode = getDefNode(funcNode, i, uri)
+            local defNode = getDefNode(funcNode, i)
             if not defNode then
                 goto CONTINUE
             end
diff --git a/script/core/diagnostics/unbalanced-assignments.lua b/script/core/diagnostics/unbalanced-assignments.lua
index f72e1fd50..a2fdf42c0 100644
--- a/script/core/diagnostics/unbalanced-assignments.lua
+++ b/script/core/diagnostics/unbalanced-assignments.lua
@@ -1,5 +1,4 @@
 local files  = require 'files'
-local define = require 'proto.define'
 local lang   = require 'language'
 local guide  = require 'parser.guide'
 local await  = require 'await'
@@ -13,7 +12,7 @@ local types = {
 }
 
 ---@async
-return function (uri, callback, code)
+return function (uri, callback)
     local ast = files.getState(uri)
     if not ast then
         return
diff --git a/script/core/diagnostics/undefined-global.lua b/script/core/diagnostics/undefined-global.lua
index d9d949598..ae50c717e 100644
--- a/script/core/diagnostics/undefined-global.lua
+++ b/script/core/diagnostics/undefined-global.lua
@@ -1,10 +1,7 @@
 local files     = require 'files'
 local vm        = require 'vm'
 local lang      = require 'language'
-local config    = require 'config'
 local guide     = require 'parser.guide'
-local await     = require 'await'
-local util      = require 'utility'
 
 local requireLike = {
     ['include'] = true,
diff --git a/script/core/diagnostics/unknown-cast-variable.lua b/script/core/diagnostics/unknown-cast-variable.lua
index 7c12e4d30..67fea5fca 100644
--- a/script/core/diagnostics/unknown-cast-variable.lua
+++ b/script/core/diagnostics/unknown-cast-variable.lua
@@ -1,5 +1,4 @@
 local files   = require 'files'
-local guide   = require 'parser.guide'
 local lang    = require 'language'
 local vm      = require 'vm'
 local await   = require 'await'
diff --git a/script/core/diagnostics/unknown-operator.lua b/script/core/diagnostics/unknown-operator.lua
index 7404b5ef7..703995fe8 100644
--- a/script/core/diagnostics/unknown-operator.lua
+++ b/script/core/diagnostics/unknown-operator.lua
@@ -1,9 +1,6 @@
 local files   = require 'files'
-local guide   = require 'parser.guide'
 local lang    = require 'language'
 local vm      = require 'vm'
-local await   = require 'await'
-local util    = require 'utility'
 
 ---@async
 return function (uri, callback)
diff --git a/script/core/folding.lua b/script/core/folding.lua
index 7f59636ed..9f1fbd272 100644
--- a/script/core/folding.lua
+++ b/script/core/folding.lua
@@ -4,7 +4,7 @@ local util  = require 'utility'
 local await = require 'await'
 
 local care = {
-    ['function'] = function (source, text, results)
+    ['function'] = function (source, _text, results)
         local folding = {
             start  = source.start,
             finish = source.finish,
@@ -20,7 +20,7 @@ local care = {
             }
         end
     end,
-    ['do'] = function (source, text, results)
+    ['do'] = function (source, _text, results)
         local folding = {
             start  = source.start,
             finish = source.finish,
@@ -28,7 +28,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['if'] = function (source, text, results)
+    ['if'] = function (source, _text, results)
         for i = 1, #source do
             local block = source[i]
             local nblock = source[i + 1]
@@ -39,7 +39,7 @@ local care = {
             }
         end
     end,
-    ['loop'] = function (source, text, results)
+    ['loop'] = function (source, _text, results)
         local folding = {
             start  = source.start,
             finish = source.finish,
@@ -47,7 +47,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['in'] = function (source, text, results)
+    ['in'] = function (source, _text, results)
         local folding = {
             start  = source.start,
             finish = source.finish,
@@ -55,7 +55,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['while'] = function (source, text, results)
+    ['while'] = function (source, _text, results)
         local folding = {
             start  = source.start,
             finish = source.finish,
@@ -63,7 +63,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['repeat'] = function (source, text, results)
+    ['repeat'] = function (source, _text, results)
         local start  = source.start
         local finish = source.keyword[#source.keyword]
         -- must end with 'until'
@@ -77,7 +77,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['table'] = function (source, text, results)
+    ['table'] = function (source, _text, results)
         local folding = {
             start  = source.start,
             finish = source.finish,
@@ -85,7 +85,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['string'] = function (source, text, results)
+    ['string'] = function (source, _text, results)
         local folding = {
             start  = source.start,
             finish = source.finish,
@@ -93,7 +93,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['comment.short'] = function (source, text, results, status)
+    ['comment.short'] = function (source, _text, results, status)
         local ltext = source.text:lower()
         ltext = util.trim(ltext, 'left')
         if     ltext:sub(1, #'region') == 'region'
@@ -119,7 +119,7 @@ local care = {
             }
         end
     end,
-    ['comment.long'] = function (source, text, results)
+    ['comment.long'] = function (source, _text, results)
         local folding = {
             start  = source.start,
             finish = source.finish,
@@ -127,7 +127,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['comment.clong'] = function (source, text, results)
+    ['comment.clong'] = function (source, _text, results)
         local folding = {
             start  = source.start,
             finish = source.finish,
@@ -135,7 +135,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['doc.class'] = function (source, text, results)
+    ['doc.class'] = function (source, _text, results)
         local folding = {
             start        = source.start,
             finish       = source.bindGroup[#source.bindGroup].finish,
@@ -144,7 +144,7 @@ local care = {
         }
         results[#results+1] = folding
     end,
-    ['doc.alias'] = function (source, text, results)
+    ['doc.alias'] = function (source, _text, results)
         local folding = {
             start        = source.start,
             finish       = source.bindGroup[#source.bindGroup].finish,
diff --git a/script/core/highlight.lua b/script/core/highlight.lua
index 722146724..6eab0a0dc 100644
--- a/script/core/highlight.lua
+++ b/script/core/highlight.lua
@@ -25,7 +25,7 @@ local function eachLocal(source, callback)
 end
 
 ---@async
-local function find(source, uri, callback)
+local function find(source, callback)
     if     source.type == 'local' then
         eachLocal(source, callback)
     elseif source.type == 'getlocal'
@@ -254,7 +254,7 @@ return function (uri, offset)
     if source then
         local isGlobal  = guide.isGlobal(source)
         local isLiteral = isLiteralValue(source)
-        find(source, uri, function (target)
+        find(source, function (target)
             if not target then
                 return
             end
diff --git a/script/core/hint.lua b/script/core/hint.lua
index b0ff5aa75..8ce73e56d 100644
--- a/script/core/hint.lua
+++ b/script/core/hint.lua
@@ -274,7 +274,7 @@ local blockTypes = {
 }
 
 ---@async
-local function semicolonHint(uri, results, start, finish)
+local function semicolonHint(uri, results, _start, _finish)
     local state = files.getState(uri)
     if not state then
         return
diff --git a/script/core/hover/description.lua b/script/core/hover/description.lua
index 0cbcc835c..9fcc88aa4 100644
--- a/script/core/hover/description.lua
+++ b/script/core/hover/description.lua
@@ -19,16 +19,16 @@ local function collectRequire(mode, literal, uri)
     end
     if result and #result > 0 then
         local shows = {}
-        for i, uri in ipairs(result) do
-            local searcher = searchers and searchers[uri]
-            local path = ws.getRelativePath(uri)
-            if vm.isMetaFile(uri) then
-                shows[i] = ('* [[meta]](%s)'):format(uri)
+        for i, uri0 in ipairs(result) do
+            local searcher = searchers and searchers[uri0]
+            local path = ws.getRelativePath(uri0)
+            if vm.isMetaFile(uri0) then
+                shows[i] = ('* [[meta]](%s)'):format(uri0)
             elseif searcher then
                 searcher = searcher:gsub('^[/\\]+', '')
-                shows[i] = ('* [%s](%s) %s'):format(path, uri, lang.script('HOVER_USE_LUA_PATH', searcher))
+                shows[i] = ('* [%s](%s) %s'):format(path, uri0, lang.script('HOVER_USE_LUA_PATH', searcher))
             else
-                shows[i] = ('* [%s](%s)'):format(path, uri)
+                shows[i] = ('* [%s](%s)'):format(path, uri0)
             end
         end
         table.sort(shows)
diff --git a/script/core/hover/table.lua b/script/core/hover/table.lua
index e59a26d05..7ab0ad348 100644
--- a/script/core/hover/table.lua
+++ b/script/core/hover/table.lua
@@ -1,5 +1,4 @@
 local vm       = require 'vm'
-local util     = require 'utility'
 local config   = require 'config'
 local await    = require 'await'
 local guide    = require 'parser.guide'
diff --git a/script/core/implementation.lua b/script/core/implementation.lua
index e48e2f736..51538ee2e 100644
--- a/script/core/implementation.lua
+++ b/script/core/implementation.lua
@@ -1,9 +1,7 @@
-local workspace  = require 'workspace'
 local files      = require 'files'
 local vm         = require 'vm'
 local findSource = require 'core.find-source'
 local guide      = require 'parser.guide'
-local rpath      = require 'workspace.require-path'
 local jumpSource = require 'core.jump-source'
 
 local function sortResults(results)
diff --git a/script/core/look-backward.lua b/script/core/look-backward.lua
index 508b57eb0..611fd8ff3 100644
--- a/script/core/look-backward.lua
+++ b/script/core/look-backward.lua
@@ -66,7 +66,6 @@ function m.findSymbol(text, offset)
         end
         ::CONTINUE::
     end
-    return nil
 end
 
 function m.findTargetSymbol(text, offset, symbol)
@@ -79,7 +78,6 @@ function m.findTargetSymbol(text, offset, symbol)
             return nil
         end
     end
-    return nil
 end
 
 ---@param text string
diff --git a/script/core/rename.lua b/script/core/rename.lua
index 534a972a8..afff8a4a7 100644
--- a/script/core/rename.lua
+++ b/script/core/rename.lua
@@ -110,8 +110,8 @@ local function renameField(source, newname, callback)
             , util.viewString(newname)
         )
         callback(source, func.start, parent.finish, newstr)
-        local finishOffset = guide.positionToOffset(state, parent.finish)
-        local pl = text:find('(', finishOffset, true)
+        local finishOffset0 = guide.positionToOffset(state, parent.finish)
+        local pl = text:find('(', finishOffset0, true)
         if pl then
             local insertPos = guide.offsetToPosition(state, pl)
             if text:find('^%s*%)', pl + 1) then
diff --git a/script/core/semantic-tokens.lua b/script/core/semantic-tokens.lua
index a3344f6b6..25df6b3c1 100644
--- a/script/core/semantic-tokens.lua
+++ b/script/core/semantic-tokens.lua
@@ -655,7 +655,7 @@ local Care = util.switch()
         }
     end)
     : case 'nonstandardSymbol.comment'
-    : call(function (source, options, results)
+    : call(function (source, _options, results)
         results[#results+1] = {
             start  = source.start,
             finish = source.finish,
@@ -663,7 +663,7 @@ local Care = util.switch()
         }
     end)
     : case 'nonstandardSymbol.continue'
-    : call(function (source, options, results)
+    : call(function (source, _options, results)
         results[#results+1] = {
             start  = source.start,
             finish = source.finish,
@@ -671,7 +671,7 @@ local Care = util.switch()
         }
     end)
     : case 'doc.cast.block'
-    : call(function (source, options, results)
+    : call(function (source, _options, results)
         results[#results+1] = {
             start      = source.start,
             finish     = source.finish,
@@ -679,7 +679,7 @@ local Care = util.switch()
         }
     end)
     : case 'doc.cast.name'
-    : call(function (source, options, results)
+    : call(function (source, _options, results)
         results[#results+1] = {
             start      = source.start,
             finish     = source.finish,
@@ -687,7 +687,7 @@ local Care = util.switch()
         }
     end)
     : case 'doc.type.code'
-    : call(function (source, options, results)
+    : call(function (source, _options, results)
         results[#results+1] = {
             start      = source.start,
             finish     = source.finish,
@@ -696,7 +696,7 @@ local Care = util.switch()
         }
     end)
     : case 'doc.operator.name'
-    : call(function (source, options, results)
+    : call(function (source, _options, results)
         results[#results+1] = {
             start      = source.start,
             finish     = source.finish,
@@ -704,7 +704,7 @@ local Care = util.switch()
         }
     end)
     : case 'doc.meta.name'
-    : call(function (source, options, results)
+    : call(function (source, _options, results)
         results[#results+1] = {
             start      = source.start,
             finish     = source.finish,
@@ -712,7 +712,7 @@ local Care = util.switch()
         }
     end)
     : case 'doc.attr'
-    : call(function (source, options, results)
+    : call(function (source, _options, results)
         results[#results+1] = {
             start      = source.start,
             finish     = source.finish,
@@ -720,9 +720,8 @@ local Care = util.switch()
         }
     end)
 
----@param state table
 ---@param results table
-local function buildTokens(state, results)
+local function buildTokens(results)
     local tokens = {}
     local lastLine = 0
     local lastStartChar = 0
@@ -939,7 +938,7 @@ return function (uri, start, finish)
 
     results = solveMultilineAndOverlapping(state, results)
 
-    local tokens = buildTokens(state, results)
+    local tokens = buildTokens(results)
 
     return tokens
 end
diff --git a/script/core/type-definition.lua b/script/core/type-definition.lua
index d9939eb0e..ccdb2f96f 100644
--- a/script/core/type-definition.lua
+++ b/script/core/type-definition.lua
@@ -57,7 +57,7 @@ local accept = {
     ['doc.field.name']   = true,
 }
 
-local function checkRequire(source, offset)
+local function checkRequire(source)
     if source.type ~= 'string' then
         return nil
     end
@@ -119,14 +119,14 @@ return function (uri, offset)
     local results = {}
     local uris = checkRequire(source)
     if uris then
-        for i, uri in ipairs(uris) do
+        for _, uri0 in ipairs(uris) do
             results[#results+1] = {
-                uri    = uri,
+                uri    = uri0,
                 source = source,
                 target = {
                     start  = 0,
                     finish = 0,
-                    uri    = uri,
+                    uri    = uri0,
                 }
             }
         end
diff --git a/script/core/type-formatting.lua b/script/core/type-formatting.lua
index f60806505..a333ab44d 100644
--- a/script/core/type-formatting.lua
+++ b/script/core/type-formatting.lua
@@ -1,8 +1,5 @@
-local files        = require 'files'
-local lookBackward = require 'core.look-backward'
-local guide        = require 'parser.guide'
-local config       = require 'config'
-local util         = require 'utility'
+local files  = require 'files'
+local config = require 'config'
 
 local function typeFormat(results, uri, position, ch, options)
     if ch ~= '\n' then
diff --git a/script/core/workspace-symbol.lua b/script/core/workspace-symbol.lua
index f831aa034..d197889a1 100644
--- a/script/core/workspace-symbol.lua
+++ b/script/core/workspace-symbol.lua
@@ -2,10 +2,9 @@ local files    = require 'files'
 local guide    = require 'parser.guide'
 local matchKey = require 'core.matchkey'
 local define   = require 'proto.define'
-local await    = require 'await'
 local vm       = require 'vm'
 
-local function buildSource(uri, source, key, results)
+local function buildSource(source, key, results)
     if     source.type == 'local'
     or     source.type == 'setlocal'
     or     source.type == 'setglobal' then
@@ -51,7 +50,7 @@ local function searchFile(uri, key, results)
     end
 
     guide.eachSource(ast.ast, function (source)
-        buildSource(uri, source, key, results)
+        buildSource(source, key, results)
     end)
 end
 
diff --git a/script/doctor.lua b/script/doctor.lua
index 478831c36..a7fd240bb 100644
--- a/script/doctor.lua
+++ b/script/doctor.lua
@@ -182,7 +182,7 @@ m.snapshot = private(function ()
     ---@generic T
     ---@param o T
     ---@return T
-    local function private(o)
+    local function private0(o)
         if not o then
             return nil
         end
@@ -190,10 +190,10 @@ m.snapshot = private(function ()
         return o
     end
 
-    private(exclude)
+    private0(exclude)
 
     local find
-    local mark = private {}
+    local mark = private0 {}
 
     local function findTable(t, result)
         result = result or {}
@@ -218,14 +218,14 @@ m.snapshot = private(function ()
                         find(v)
                         local valueResults = mark[v]
                         if valueResults then
-                            valueResults[#valueResults+1] = private {
+                            valueResults[#valueResults+1] = private0 {
                                 type = 'weakvalue-key',
                                 name = formatName(t) .. '|' .. formatName(v),
                                 info = keyInfo,
                             }
                         end
                     else
-                        result[#result+1] = private {
+                        result[#result+1] = private0 {
                             type = 'key',
                             name = formatName(k),
                             info = keyInfo,
@@ -240,14 +240,14 @@ m.snapshot = private(function ()
                         find(k)
                         local keyResults = mark[k]
                         if keyResults then
-                            keyResults[#keyResults+1] = private {
+                            keyResults[#keyResults+1] = private0 {
                                 type = 'weakkey-field',
                                 name = formatName(t) .. '|' .. formatName(k),
                                 info = valueInfo,
                             }
                         end
                     else
-                        result[#result+1] = private {
+                        result[#result+1] = private0 {
                             type = 'field',
                             name = formatName(k) .. '|' .. formatName(v),
                             info = valueInfo,
@@ -258,7 +258,7 @@ m.snapshot = private(function ()
         end
         local MTInfo = find(getmetatable(t))
         if MTInfo then
-            result[#result+1] = private {
+            result[#result+1] = private0 {
                 type = 'metatable',
                 name = '',
                 info = MTInfo,
@@ -276,7 +276,7 @@ m.snapshot = private(function ()
             end
             local valueInfo = find(v)
             if valueInfo then
-                result[#result+1] = private {
+                result[#result+1] = private0 {
                     type = 'upvalue',
                     name = n,
                     info = valueInfo,
@@ -296,7 +296,7 @@ m.snapshot = private(function ()
             end
             local valueInfo = find(v)
             if valueInfo then
-                result[#result+1] = private {
+                result[#result+1] = private0 {
                     type = 'uservalue',
                     name = formatName(i),
                     info = valueInfo,
@@ -305,7 +305,7 @@ m.snapshot = private(function ()
         end
         local MTInfo = find(getmetatable(u))
         if MTInfo then
-            result[#result+1] = private {
+            result[#result+1] = private0 {
                 type = 'metatable',
                 name = '',
                 info = MTInfo,
@@ -322,7 +322,7 @@ m.snapshot = private(function ()
         if m._ignoreMainThread and trd == registry[1] then
             return nil
         end
-        result = result or private {}
+        result = result or private0 {}
 
         for i = 1, maxinterger do
             local info = getinfo(trd, i, 'Sf')
@@ -338,14 +338,14 @@ m.snapshot = private(function ()
                     end
                     local valueInfo = find(l)
                     if valueInfo then
-                        funcInfo[#funcInfo+1] = private {
+                        funcInfo[#funcInfo+1] = private0 {
                             type = 'local',
                             name = n,
                             info = valueInfo,
                         }
                     end
                 end
-                result[#result+1] = private {
+                result[#result+1] = private0 {
                     type = 'stack',
                     name = i .. '@' .. formatName(info.func),
                     info = funcInfo,
@@ -364,7 +364,7 @@ m.snapshot = private(function ()
         if m._ignoreMainThread then
             return nil
         end
-        local result = private {}
+        local result = private0 {}
 
         for i = 1, maxinterger do
             local info = getinfo(i, 'Sf')
@@ -380,14 +380,14 @@ m.snapshot = private(function ()
                     end
                     local valueInfo = find(l)
                     if valueInfo then
-                        funcInfo[#funcInfo+1] = private {
+                        funcInfo[#funcInfo+1] = private0 {
                             type = 'local',
                             name = n,
                             info = valueInfo,
                         }
                     end
                 end
-                result[#result+1] = private {
+                result[#result+1] = private0 {
                     type = 'stack',
                     name = i .. '@' .. formatName(info.func),
                     info = funcInfo,
@@ -410,16 +410,16 @@ m.snapshot = private(function ()
         end
         local tp = type(obj)
         if tp == 'table' then
-            mark[obj] = private {}
+            mark[obj] = private0 {}
             mark[obj] = findTable(obj, mark[obj])
         elseif tp == 'function' then
-            mark[obj] = private {}
+            mark[obj] = private0 {}
             mark[obj] = findFunction(obj, mark[obj])
         elseif tp == 'userdata' then
-            mark[obj] = private {}
+            mark[obj] = private0 {}
             mark[obj] = findUserData(obj, mark[obj])
         elseif tp == 'thread' then
-            mark[obj] = private {}
+            mark[obj] = private0 {}
             mark[obj] = findThread(obj, mark[obj])
         else
             return nil
@@ -431,26 +431,26 @@ m.snapshot = private(function ()
     end
 
     -- TODO: Lua 5.1中，主线程与_G都不在注册表里
-    local result = private {
+    local result = private0 {
         name = formatName(registry),
         type = 'root',
         info = find(registry),
     }
     if not registry[1] then
-        result.info[#result.info+1] = private {
+        result.info[#result.info+1] = private0 {
             type = 'thread',
             name = 'main',
             info = findMainThread(),
         }
     end
     if not registry[2] then
-        result.info[#result.info+1] = private {
+        result.info[#result.info+1] = private0 {
             type = '_G',
             name = '_G',
             info = find(_G),
         }
     end
-    for name, mt in next, private {
+    for name, mt in next, private0 {
         ['nil']       = getmetatable(nil),
         ['boolean']   = getmetatable(true),
         ['number']    = getmetatable(0),
@@ -458,7 +458,7 @@ m.snapshot = private(function ()
         ['function']  = getmetatable(function () end),
         ['thread']    = getmetatable(ccreate(function () end)),
     } do
-        result.info[#result.info+1] = private {
+        result.info[#result.info+1] = private0 {
             type = 'metatable',
             name = name,
             info = find(mt),
diff --git a/script/file-uri.lua b/script/file-uri.lua
index 192f3ab5a..4c5649046 100644
--- a/script/file-uri.lua
+++ b/script/file-uri.lua
@@ -95,7 +95,7 @@ end
 ---@param uri string
 ---@return boolean
 function m.isValid(uri)
-    local scheme, authority, path = m.split(uri)
+    local scheme, _authority, path = m.split(uri)
     if not scheme or scheme == '' then
         return false
     end
diff --git a/script/files.lua b/script/files.lua
index b9df56957..401e81dad 100644
--- a/script/files.lua
+++ b/script/files.lua
@@ -6,9 +6,7 @@ local furi     = require 'file-uri'
 local parser   = require 'parser'
 local lang     = require 'language'
 local await    = require 'await'
-local timer    = require 'timer'
 local util     = require 'utility'
-local guide    = require 'parser.guide'
 local smerger  = require 'string-merger'
 local progress = require "progress"
 local encoder  = require 'encoder'
diff --git a/script/fs-utility.lua b/script/fs-utility.lua
index 35b336fe6..c226c7616 100644
--- a/script/fs-utility.lua
+++ b/script/fs-utility.lua
@@ -1,5 +1,4 @@
 local fs           = require 'bee.filesystem'
-local platform     = require 'bee.platform'
 
 local type         = type
 local ioOpen       = io.open
@@ -7,7 +6,6 @@ local pcall        = pcall
 local pairs        = pairs
 local setmetatable = setmetatable
 local next         = next
-local ipairs       = ipairs
 local tostring     = tostring
 local tableSort    = table.sort
 
@@ -286,7 +284,7 @@ local function fsAbsolute(path, option)
     return res
 end
 
-local function fsIsDirectory(path, option)
+local function fsIsDirectory(path)
     if not path then
         return false
     end
@@ -455,7 +453,7 @@ local function fileRemove(path, option)
     if option.onRemove and option.onRemove(path) == false then
         return
     end
-    if fsIsDirectory(path, option) then
+    if fsIsDirectory(path) then
         for child in fsPairs(path, option) do
             fileRemove(child, option)
         end
@@ -472,8 +470,8 @@ local function fileCopy(source, target, option)
     if not source or not target then
         return
     end
-    local isDir1   = fsIsDirectory(source, option)
-    local isDir2   = fsIsDirectory(target, option)
+    local isDir1   = fsIsDirectory(source)
+    local isDir2   = fsIsDirectory(target)
     local isExists = fsExists(target, option)
     if isDir1 then
         if isDir2 or fsCreateDirectories(target, option) then
@@ -508,8 +506,8 @@ local function fileSync(source, target, option)
     if not source or not target then
         return
     end
-    local isDir1   = fsIsDirectory(source, option)
-    local isDir2   = fsIsDirectory(target, option)
+    local isDir1   = fsIsDirectory(source)
+    local isDir2   = fsIsDirectory(target)
     local isExists = fsExists(target, option)
     if isDir1 then
         if isDir2 then
diff --git a/script/gc.lua b/script/gc.lua
index 927395851..e733f22e5 100644
--- a/script/gc.lua
+++ b/script/gc.lua
@@ -51,7 +51,7 @@ end
 local function zip(self)
     local list = self._list
     local index = 1
-    for i = 1, #list do
+    for _ = 1, #list do
         local obj = list[index]
         if not obj then
             break
diff --git a/script/glob/gitignore.lua b/script/glob/gitignore.lua
index fef0a0d74..d7615ccbc 100644
--- a/script/glob/gitignore.lua
+++ b/script/glob/gitignore.lua
@@ -100,11 +100,11 @@ function mt:hasInterface(name)
     return self.interface[name] ~= nil
 end
 
-function mt:checkDirectory(catch, path, matcher)
+function mt:checkDirectory(catch, path, matcher0)
     if not self:hasInterface 'type' then
         return true
     end
-    if not matcher:isNeedDirectory() then
+    if not matcher0:isNeedDirectory() then
         return true
     end
     if #catch < #path then
@@ -119,10 +119,10 @@ end
 function mt:simpleMatch(path)
     path = self:getRelativePath(path)
     for i = #self.matcher, 1, -1 do
-        local matcher = self.matcher[i]
-        local catch = matcher(path)
-        if catch and self:checkDirectory(catch, path, matcher) then
-            if matcher:isNegative() then
+        local matcher0 = self.matcher[i]
+        local catch = matcher0(path)
+        if catch and self:checkDirectory(catch, path, matcher0) then
+            if matcher0:isNegative() then
                 return false
             else
                 return true
@@ -182,12 +182,12 @@ function mt:scan(path, callback, hook)
         elseif fileType == 'directory' then
             local result = self:callInterface('list', current)
             if type(result) == 'table' then
-                for _, path in ipairs(result) do
-                    local filename = path:match '([^/\\]+)[/\\]*$'
+                for _, path0 in ipairs(result) do
+                    local filename = path0:match '([^/\\]+)[/\\]*$'
                     if  filename
                     and filename ~= '.'
                     and filename ~= '..' then
-                        list[#list+1] = path
+                        list[#list+1] = path0
                     end
                 end
             end
diff --git a/script/lazytable.lua b/script/lazytable.lua
index f964f236c..6d1f2611d 100644
--- a/script/lazytable.lua
+++ b/script/lazytable.lua
@@ -5,8 +5,6 @@ local next    = next
 local load    = load
 local setmt   = setmetatable
 local rawset  = rawset
-local sdump   = string.dump
-local sbyte   = string.byte
 local smatch  = string.match
 local sformat = string.format
 local tconcat = table.concat
diff --git a/script/lclient.lua b/script/lclient.lua
index 3bcde50ae..0909e9321 100644
--- a/script/lclient.lua
+++ b/script/lclient.lua
@@ -5,7 +5,6 @@ local await   = require 'await'
 local timer   = require 'timer'
 local pub     = require 'pub'
 local json    = require 'json'
-local client  = require 'client'
 local define  = require 'proto.define'
 
 require 'provider'
diff --git a/script/library.lua b/script/library.lua
index 49e39470b..620520dbc 100644
--- a/script/library.lua
+++ b/script/library.lua
@@ -343,7 +343,7 @@ local function loadSingle3rdConfig(libraryDir)
         local jsonbuf = jsonb.beautify(cfg)
         client.requestMessage('Info', lang.script.WINDOW_CONFIG_LUA_DEPRECATED, {
             lang.script.WINDOW_CONVERT_CONFIG_LUA,
-        }, function (action, index)
+        }, function (_action, index)
             if index == 1 and jsonbuf then
                 fsu.saveFile(libraryDir / 'config.json', jsonbuf)
                 fsu.fileRemove(libraryDir / 'config.lua')
@@ -638,7 +638,7 @@ local function check3rdOfWorkspace(suri)
     end, id)
 end
 
-config.watch(function (uri, key, value, oldValue)
+config.watch(function (uri, key, _value, _oldValue)
     if key:find '^Lua.runtime' then
         initBuiltIn(uri)
     end
diff --git a/script/parser/compile.lua b/script/parser/compile.lua
index 597c0e5bc..c007ed512 100644
--- a/script/parser/compile.lua
+++ b/script/parser/compile.lua
@@ -370,7 +370,7 @@ local function unknownSymbol(start, finish, word)
     return true
 end
 
-local function skipUnknownSymbol(stopSymbol)
+local function skipUnknownSymbol()
     if unknownSymbol() then
         Index = Index + 2
         return true
@@ -1123,7 +1123,6 @@ local function parseShortString()
                 stringPool[stringIndex] = '\n'
                 currentOffset = Tokens[Index] + #nextToken
                 skipNL()
-                local right = getPosition(currentOffset + 1, 'right')
                 escs[#escs+1] = escLeft
                 escs[#escs+1] = escLeft + 1
                 escs[#escs+1] = 'normal'
@@ -2274,7 +2273,7 @@ local function parseParams(params, isLambda)
             Index = Index + 2
             goto CONTINUE
         end
-        skipUnknownSymbol ('%,%' .. endToken .. '%.')
+        skipUnknownSymbol()
         ::CONTINUE::
     end
     return params
diff --git a/script/parser/guide.lua b/script/parser/guide.lua
index aeb229658..429785125 100644
--- a/script/parser/guide.lua
+++ b/script/parser/guide.lua
@@ -750,12 +750,12 @@ end
 
 --- 遍历所有指定类型的source
 ---@param ast parser.object
----@param type string
+---@param ty string
 ---@param callback fun(src: parser.object): any
 ---@return any
-function m.eachSourceType(ast, type, callback)
+function m.eachSourceType(ast, ty, callback)
     local cache = getSourceTypeCache(ast)
-    local myCache = cache[type]
+    local myCache = cache[ty]
     if not myCache then
         return
     end
diff --git a/script/parser/luadoc.lua b/script/parser/luadoc.lua
index 2ae24ccac..c95f8f3b2 100644
--- a/script/parser/luadoc.lua
+++ b/script/parser/luadoc.lua
@@ -739,7 +739,7 @@ local function parseCodePattern(parent)
         end
     end
     local start = getStart()
-    for i = 2 , finishOffset do
+    for _ = 2, finishOffset do
         nextToken()
     end
     local code = {
@@ -2088,7 +2088,7 @@ local function bindDocWithSources(sources, binded)
     bindGeneric(binded)
     bindCommentsAndFields(binded)
     bindReturnIndex(binded)
-    
+
     -- doc is special node
     if lastDoc.special then
         if bindDoc(lastDoc.special, binded) then
@@ -2235,7 +2235,7 @@ local function luadoc(state)
     end
 
     if ast.state.pluginDocs then
-        for i, doc in ipairs(ast.state.pluginDocs) do
+        for _, doc in ipairs(ast.state.pluginDocs) do
             insertDoc(doc, doc.originalComment)
         end
         ---@param a unknown
diff --git a/script/parser/relabel.lua b/script/parser/relabel.lua
index ac9024034..323e01a15 100644
--- a/script/parser/relabel.lua
+++ b/script/parser/relabel.lua
@@ -23,7 +23,6 @@ _ENV = nil
 
 
 local any = m.P(1)
-local dummy = mm.P(false)
 
 
 local errinfo = {
diff --git a/script/plugin.lua b/script/plugin.lua
index f2a108fa9..3dc77b22e 100644
--- a/script/plugin.lua
+++ b/script/plugin.lua
@@ -29,7 +29,7 @@ function m.dispatch(event, uri, ...)
     end
     local failed = 0
     local res1, res2
-    for i, interface in ipairs(interfaces) do
+    for _, interface in ipairs(interfaces) do
         local method = interface[event]
         if type(method) ~= 'function' then
             return false
@@ -110,7 +110,7 @@ local function initPlugin(uri)
         if type(pluginConfigPaths) == 'string' then
             pluginConfigPaths = { pluginConfigPaths }
         end
-        for i, pluginConfigPath in ipairs(pluginConfigPaths) do
+        for _, pluginConfigPath in ipairs(pluginConfigPaths) do
             local myArgs = args
             if args and not args[1] then
                 for k, v in pairs(args) do
diff --git a/script/plugins/astHelper.lua b/script/plugins/astHelper.lua
index bfe2dd27b..c4df175dd 100644
--- a/script/plugins/astHelper.lua
+++ b/script/plugins/astHelper.lua
@@ -1,5 +1,4 @@
 local luadoc = require 'parser.luadoc'
-local ssub = require 'core.substring'
 local guide = require 'parser.guide'
 local _M = {}
 
diff --git a/script/plugins/ffi/c-parser/ctypes.lua b/script/plugins/ffi/c-parser/ctypes.lua
index 115f78ab0..2f43d8aa6 100644
--- a/script/plugins/ffi/c-parser/ctypes.lua
+++ b/script/plugins/ffi/c-parser/ctypes.lua
@@ -126,12 +126,12 @@ local convert_value = typed("TypeList, table -> CType?, string?", function (lst,
     }), nil
 end)
 
-local function convert_fields(lst, field_src, fields)
+local function convert_fields(field_src, fields)
     if field_src.ids then
-        for i, id in ipairs(field_src.ids) do
+        for _, id in ipairs(field_src.ids) do
             id.type = utility.deepCopy(field_src.type)
             if id.type and id[1] then
-                for i, v in ipairs(id[1]) do
+                for _, v in ipairs(id[1]) do
                     table.insert(id.type, v)
                 end
                 if id[1].idx then
@@ -159,7 +159,7 @@ local function add_to_fields(lst, field_src, fields)
         return true
     end
 
-    if convert_fields(lst, field_src, fields) then
+    if convert_fields(field_src, fields) then
         return true
     end
     local field, err = convert_value(lst, field_src)
diff --git a/script/plugins/ffi/c-parser/util.lua b/script/plugins/ffi/c-parser/util.lua
index cb493efaf..8e043786f 100644
--- a/script/plugins/ffi/c-parser/util.lua
+++ b/script/plugins/ffi/c-parser/util.lua
@@ -1,7 +1,7 @@
 local m = {}
 
 local function tableLenEqual(t, len)
-    for key, value in pairs(t) do
+    for _key, _value in pairs(t) do
         len = len - 1
         if len < 0 then
             return false
diff --git a/script/plugins/ffi/cdefRerence.lua b/script/plugins/ffi/cdefRerence.lua
index 54a8c2a79..654d77436 100644
--- a/script/plugins/ffi/cdefRerence.lua
+++ b/script/plugins/ffi/cdefRerence.lua
@@ -8,7 +8,7 @@ local remove    = table.remove
 local function getCdefSourcePosition(ffi_state)
     local cdef_position = ffi_state.ast.returns[1][1]
     local source = vm.getFields(cdef_position)
-    for index, value in ipairs(source) do
+    for _, value in ipairs(source) do
         local name = guide.getKeyName(value)
         if name == 'cdef' then
             return value.field.start
diff --git a/script/plugins/ffi/init.lua b/script/plugins/ffi/init.lua
index 17159ff2e..05c2b5844 100644
--- a/script/plugins/ffi/init.lua
+++ b/script/plugins/ffi/init.lua
@@ -1,11 +1,8 @@
 local cdriver                = require 'plugins.ffi.c-parser.cdriver'
 local util                   = require 'plugins.ffi.c-parser.util'
 local utility                = require 'utility'
-local SDBMHash               = require 'SDBMHash'
-local config                 = require 'config'
 local fs                     = require 'bee.filesystem'
 local ws                     = require 'workspace'
-local furi                   = require 'file-uri'
 
 local namespace <const>      = 'ffi.namespace*.'
 
@@ -88,7 +85,7 @@ local constName <const>      = 'm'
 local builder                = { switch_ast = utility.switch() }
 
 function builder:getTypeAst(name)
-    for i, asts in ipairs(self.globalAsts) do
+    for _, asts in ipairs(self.globalAsts) do
         if asts[name] then
             return asts[name]
         end
@@ -166,7 +163,7 @@ local function getArrayType(arr)
         return arr and '[]' or ''
     end
     local res = ''
-    for i, v in ipairs(arr) do
+    for _ in ipairs(arr) do
         res = res .. '[]'
     end
     return res
@@ -188,7 +185,7 @@ end
 
 function builder:buildFunction(lines, tt, name)
     local param_names = {}
-    for i, param in ipairs(tt.params or {}) do
+    for _, param in ipairs(tt.params or {}) do
         local param_name = getValidName(param.name)
         lines[#lines+1] = ('---@param %s %s%s'):format(param_name, self:getType(param.type), getArrayType(param.idxs))
         param_names[#param_names+1] = param_name
diff --git a/script/plugins/ffi/searchCode.lua b/script/plugins/ffi/searchCode.lua
index 86dbc6803..46d2e7af0 100644
--- a/script/plugins/ffi/searchCode.lua
+++ b/script/plugins/ffi/searchCode.lua
@@ -6,7 +6,7 @@ local function getLiterals(arg)
     if not literals then
         return res
     end
-    for k, v in pairs(literals) do
+    for k in pairs(literals) do
         if type(k) == 'string' then
             res[#res+1] = k
         end
@@ -34,7 +34,7 @@ local function getCode(CdefReference)
             if not literals then
                 goto CONTINUE
             end
-            for k, v in pairs(literals) do
+            for k in pairs(literals) do
                 if type(k) == 'string' then
                     res[#res+1] = k
                 end
@@ -51,7 +51,7 @@ return function (CdefReference, target_uri)
         return nil
     end
     local codeResults
-    for i, v in ipairs(CdefReference) do
+    for _, v in ipairs(CdefReference) do
         if v.uri ~= target_uri then
             goto continue
         end
@@ -59,9 +59,9 @@ return function (CdefReference, target_uri)
         if not codes then
             goto continue
         end
-        for i, v in ipairs(codes) do
+        for _, v0 in ipairs(codes) do
             codeResults = codeResults or {}
-            codeResults[#codeResults+1] = v
+            codeResults[#codeResults+1] = v0
         end
         ::continue::
     end
diff --git a/script/plugins/nodeHelper.lua b/script/plugins/nodeHelper.lua
index 3f90b1521..d8ecd9825 100644
--- a/script/plugins/nodeHelper.lua
+++ b/script/plugins/nodeHelper.lua
@@ -1,6 +1,3 @@
-local vm = require 'vm'
-local guide = require 'parser.guide'
-
 local _M = {}
 
 ---@class node.match.pattern
@@ -32,7 +29,7 @@ end
 function _M.matchPattern(source, pattern)
     if source.type == 'local' then
         if source.parent.type == 'funcargs' and source.parent.parent.type == 'function' then
-            for i, ref in ipairs(source.ref) do
+            for _, ref in ipairs(source.ref) do
                 if deepCompare(ref, pattern) then
                     return true
                 end
diff --git a/script/provider/build-meta.lua b/script/provider/build-meta.lua
index baabe39c0..9fcd00957 100644
--- a/script/provider/build-meta.lua
+++ b/script/provider/build-meta.lua
@@ -1,5 +1,3 @@
-local fs       = require 'bee.filesystem'
-local config   = require 'config'
 local util     = require 'utility'
 local await    = require 'await'
 local progress = require 'progress'
diff --git a/script/provider/capability.lua b/script/provider/capability.lua
index 4f7ec3885..b33f17fa6 100644
--- a/script/provider/capability.lua
+++ b/script/provider/capability.lua
@@ -1,8 +1,6 @@
 local nonil      = require 'without-check-nil'
 local client     = require 'client'
-local platform   = require 'bee.platform'
 local completion = require 'provider.completion'
-local define     = require 'proto.define'
 
 require 'provider.semantic-tokens'
 require 'provider.formatting'
diff --git a/script/provider/code-lens.lua b/script/provider/code-lens.lua
index 5802b17eb..6d33e6152 100644
--- a/script/provider/code-lens.lua
+++ b/script/provider/code-lens.lua
@@ -14,7 +14,7 @@ local function refresh()
     proto.request('workspace/codeLens/refresh', json.null)
 end
 
-config.watch(function (uri, key, value, oldValue)
+config.watch(function (_uri, key, _value, _oldValue)
     if key == '' then
         refresh()
     end
diff --git a/script/provider/completion.lua b/script/provider/completion.lua
index 46960709a..373443fed 100644
--- a/script/provider/completion.lua
+++ b/script/provider/completion.lua
@@ -29,7 +29,7 @@ local function allWords()
     return list
 end
 
-local function enable(uri)
+local function enable(_uri)
     if isEnable then
         return
     end
@@ -55,7 +55,7 @@ local function enable(uri)
     })
 end
 
-local function disable(uri)
+local function disable(_uri)
     if not isEnable then
         return
     end
diff --git a/script/provider/diagnostic.lua b/script/provider/diagnostic.lua
index c52c7e895..c36ed8c2c 100644
--- a/script/provider/diagnostic.lua
+++ b/script/provider/diagnostic.lua
@@ -715,7 +715,7 @@ config.watch(function (uri, key, value, oldValue)
     end
 end)
 
-fw.event(function (ev, path)
+fw.event(function (_ev, path)
     if util.stringEndWith(path, '.editorconfig') then
         for _, scp in ipairs(ws.folders) do
             m.diagnosticsScope(scp.uri)
diff --git a/script/provider/formatting.lua b/script/provider/formatting.lua
index ea94db08c..f8b4ef21c 100644
--- a/script/provider/formatting.lua
+++ b/script/provider/formatting.lua
@@ -8,7 +8,6 @@ local furi        = require 'file-uri'
 local fs          = require 'bee.filesystem'
 local fw          = require 'filewatch'
 local util        = require 'utility'
-local diagnostics = require 'provider.diagnostic'
 local config      = require 'config'
 
 local loadedUris = {}
@@ -19,7 +18,7 @@ local updateType = {
     Deleted = 3,
 }
 
-fw.event(function(ev, path)
+fw.event(function(_ev, path)
     if util.stringEndWith(path, '.editorconfig') then
         for uri, fsPath in pairs(loadedUris) do
             loadedUris[uri] = nil
@@ -91,7 +90,7 @@ function m.updateNonStandardSymbols(symbols)
     codeFormat.set_nonstandard_symbol()
 end
 
-config.watch(function(uri, key, value)
+config.watch(function(_uri, key, value)
     if  key == "Lua.format.defaultConfig" then
         codeFormat.set_default_config(value)
     elseif key == "Lua.runtime.nonstandardSymbol" then
diff --git a/script/provider/inlay-hint.lua b/script/provider/inlay-hint.lua
index 12b43330e..d970de5ab 100644
--- a/script/provider/inlay-hint.lua
+++ b/script/provider/inlay-hint.lua
@@ -14,7 +14,7 @@ local function refresh()
     proto.request('workspace/inlayHint/refresh', json.null)
 end
 
-config.watch(function (uri, key, value, oldValue)
+config.watch(function (_uri, key, _value, _oldValue)
     if key == '' then
         refresh()
     end
diff --git a/script/provider/name-style.lua b/script/provider/name-style.lua
index bdb20d80d..e95925ef0 100644
--- a/script/provider/name-style.lua
+++ b/script/provider/name-style.lua
@@ -19,7 +19,7 @@ function m.nameStyleCheck(uri, text)
     return codeFormat.name_style_analysis(uri, text)
 end
 
-config.watch(function (uri, key, value)
+config.watch(function (_uri, key, value)
     if key == "Lua.nameStyle.config" then
         codeFormat.update_name_style_config(value)
     end
diff --git a/script/provider/provider.lua b/script/provider/provider.lua
index f9f509951..bc4554465 100644
--- a/script/provider/provider.lua
+++ b/script/provider/provider.lua
@@ -7,7 +7,6 @@ local define     = require 'proto.define'
 local workspace  = require 'workspace'
 local config     = require 'config'
 local client     = require 'client'
-local pub        = require 'pub'
 local lang       = require 'language'
 local progress   = require 'progress'
 local tm         = require 'text-merger'
@@ -81,7 +80,7 @@ function m.register(method)
     end
 end
 
-filewatch.event(function (ev, path) ---@async
+filewatch.event(function (_ev, path) ---@async
     if (CONFIGPATH and util.stringEndWith(path, CONFIGPATH)) then
         for _, scp in ipairs(workspace.folders) do
             local configPath = workspace.getAbsolutePath(scp.uri, CONFIGPATH)
@@ -138,7 +137,7 @@ m.register 'initialize' {
 
 m.register 'initialized'{
     ---@async
-    function (params)
+    function (_params)
         local _ <close> = progress.create(workspace.getFirstScope().uri, lang.script.WINDOW_INITIALIZING, 0.5)
         m.updateConfig()
         local registrations = {}
@@ -506,7 +505,7 @@ m.register 'textDocument/references' {
             return nil
         end
         local response = {}
-        for i, info in ipairs(result) do
+        for _, info in ipairs(result) do
             ---@type uri
             local targetUri = info.uri
             local targetState = files.getState(targetUri)
@@ -1416,7 +1415,7 @@ m.register 'textDocument/inlayHint' {
         local results = core(uri, start, finish)
         local hintResults = {}
         for i, res in ipairs(results) do
-            local luri = res.source and guide.getUri(res.source) 
+            local luri = res.source and guide.getUri(res.source)
             local lstate = files.getState(luri)
             hintResults[i] = {
                 label        = {
@@ -1609,7 +1608,7 @@ local function refreshLanguageConfiguration()
     proto.notify('$/languageConfiguration', require 'provider.language-configuration')
 end
 
-config.watch(function (uri, key, value)
+config.watch(function (_uri, key, _value)
     if key == '' then
         refreshLanguageConfiguration()
     end
@@ -1633,7 +1632,7 @@ local function refreshStatusBar()
     end
 end
 
-config.watch(function (uri, key, value)
+config.watch(function (_uri, key, _value)
     if key == 'Lua.window.statusBar'
     or key == '' then
         refreshStatusBar()
diff --git a/script/provider/semantic-tokens.lua b/script/provider/semantic-tokens.lua
index 0218db2a8..cfe967f66 100644
--- a/script/provider/semantic-tokens.lua
+++ b/script/provider/semantic-tokens.lua
@@ -14,7 +14,7 @@ local function refresh()
     proto.request('workspace/semanticTokens/refresh', json.null)
 end
 
-config.watch(function (uri, key, value, oldValue)
+config.watch(function (_uri, key, _value, _oldValue)
     if key == '' then
         refresh()
     end
diff --git a/script/provider/spell.lua b/script/provider/spell.lua
index 6647bbad4..b29295d4c 100644
--- a/script/provider/spell.lua
+++ b/script/provider/spell.lua
@@ -5,9 +5,7 @@ end
 
 local fs = require 'bee.filesystem'
 local config = require 'config'
-local diagnostics = require 'provider.diagnostic'
 local pformatting = require 'provider.formatting'
-local util = require 'utility'
 
 local m = {}
 
diff --git a/script/pub/report.lua b/script/pub/report.lua
index 5169023c7..28340245c 100644
--- a/script/pub/report.lua
+++ b/script/pub/report.lua
@@ -1,6 +1,5 @@
 local pub   = require 'pub.pub'
 local await = require 'await'
-local util  = require 'utility'
 
 pub.on('log', function (params, brave)
     log.raw(brave.id, params.level, params.msg, params.src, params.line, params.clock)
diff --git a/script/service/service.lua b/script/service/service.lua
index c7675f1b6..13cc560e0 100644
--- a/script/service/service.lua
+++ b/script/service/service.lua
@@ -1,6 +1,5 @@
 ---@diagnostic disable: deprecated
 local pub    = require 'pub'
-local thread = require 'bee.thread'
 local await  = require 'await'
 local timer  = require 'timer'
 local proto  = require 'proto'
diff --git a/script/text-merger.lua b/script/text-merger.lua
index c3b144c38..9386a6b22 100644
--- a/script/text-merger.lua
+++ b/script/text-merger.lua
@@ -1,4 +1,3 @@
-local files   = require 'files'
 local util    = require 'utility'
 local encoder = require 'encoder'
 local client  = require 'client'
diff --git a/script/tracy.lua b/script/tracy.lua
index 6a8ab4804..9c096e21c 100644
--- a/script/tracy.lua
+++ b/script/tracy.lua
@@ -7,7 +7,7 @@ local function enable()
             originTracy = tracy
         else
             originTracy = {
-                ZoneBeginN = function (info) end,
+                ZoneBeginN = function (_info) end,
                 ZoneEnd    = function () end,
             }
         end
@@ -19,7 +19,7 @@ end
 local function disable()
 ---@diagnostic disable-next-line: lowercase-global
     tracy = {
-        ZoneBeginN = function (info) end,
+        ZoneBeginN = function (_info) end,
         ZoneEnd    = function () end,
     }
 end
diff --git a/script/utility.lua b/script/utility.lua
index 861c66ace..117122fc6 100644
--- a/script/utility.lua
+++ b/script/utility.lua
@@ -23,7 +23,6 @@ local mathHuge     = math.huge
 local inf          = 1 / 0
 local nan          = 0 / 0
 local error        = error
-local assert       = assert
 
 _ENV = nil
 
diff --git a/script/vm/compiler.lua b/script/vm/compiler.lua
index 8d6b2db76..ba164c838 100644
--- a/script/vm/compiler.lua
+++ b/script/vm/compiler.lua
@@ -119,7 +119,6 @@ local function searchFieldByLocalID(source, key, pushResult)
             end
         end
     end
-    
 
     local hasMarkDoc = {}
     for _, src in ipairs(fields) do
@@ -177,7 +176,7 @@ end
 
 local searchFieldSwitch = util.switch()
     : case 'table'
-    : call(function (suri, source, key, pushResult)
+    : call(function (_suri, source, key, pushResult)
         local hasFiled = false
         for _, field in ipairs(source) do
             if field.type == 'tablefield'
@@ -247,7 +246,7 @@ local searchFieldSwitch = util.switch()
     end)
     : case 'string'
     : case 'doc.type.string'
-    : call(function (suri, source, key, pushResult)
+    : call(function (suri, _source, key, pushResult)
         -- change to `string: stringlib` ?
         local stringlib = vm.getGlobal('type', 'stringlib')
         if stringlib then
@@ -270,7 +269,7 @@ local searchFieldSwitch = util.switch()
         end
     end)
     : case 'doc.type.table'
-    : call(function (suri, source, key, pushResult)
+    : call(function (_suri, source, key, pushResult)
         if type(key) == 'string' and key:find(vm.ID_SPLITE) then
             return
         end
@@ -1208,7 +1207,7 @@ local function compileFunctionParam(func, source)
                         if not extClass then
                             goto continue
                         end
-                        vm.getClassFields(suri, extClass, key, function (field, isMark)
+                        vm.getClassFields(suri, extClass, key, function (field, _isMark)
                             for n in vm.compileNode(field):eachObject() do
                                 if n.type == 'function' and n.args[aindex] then
                                     local argNode = vm.compileNode(n.args[aindex])
@@ -1672,7 +1671,7 @@ local compilerSwitch = util.switch()
                             end
                             local hasGeneric
                             if sign then
-                                guide.eachSourceType(rtn, 'doc.generic.name', function (src)
+                                guide.eachSourceType(rtn, 'doc.generic.name', function (_src)
                                     hasGeneric = true
                                 end)
                             end
diff --git a/script/vm/doc.lua b/script/vm/doc.lua
index 6ac39910a..c936d2f3f 100644
--- a/script/vm/doc.lua
+++ b/script/vm/doc.lua
@@ -342,14 +342,13 @@ function vm.isAsyncCall(call)
     return false
 end
 
----@param uri uri
 ---@param doc parser.object
 ---@param results table[]
-local function makeDiagRange(uri, doc, results)
+local function makeDiagRange(doc, results)
     local names
     if doc.names then
         names = {}
-        for i, nameUnit in ipairs(doc.names) do
+        for _, nameUnit in ipairs(doc.names) do
             local name = nameUnit[1]
             names[name] = true
         end
@@ -419,7 +418,7 @@ function vm.isDiagDisabledAt(uri, position, name, err)
         cache.diagnosticRanges = {}
         for _, doc in ipairs(status.ast.docs) do
             if doc.type == 'doc.diagnostic' then
-                makeDiagRange(uri, doc, cache.diagnosticRanges)
+                makeDiagRange(doc, cache.diagnosticRanges)
             end
         end
         table.sort(cache.diagnosticRanges, function (a, b)
diff --git a/script/vm/field.lua b/script/vm/field.lua
index d41e886a5..806986b1b 100644
--- a/script/vm/field.lua
+++ b/script/vm/field.lua
@@ -11,7 +11,7 @@ local searchByNodeSwitch = util.switch()
             pushResult(set)
         end
     end)
-    : default(function (suri, source, pushResult)
+    : default(function (_suri, source, pushResult)
         pushResult(source)
     end)
 
diff --git a/script/vm/infer.lua b/script/vm/infer.lua
index 35e17e5c3..099b894b4 100644
--- a/script/vm/infer.lua
+++ b/script/vm/infer.lua
@@ -42,11 +42,11 @@ local viewNodeSwitch;viewNodeSwitch = util.switch()
     : case 'boolean'
     : case 'string'
     : case 'integer'
-    : call(function (source, infer)
+    : call(function (source, _infer)
         return source.type
     end)
     : case 'number'
-    : call(function (source, infer)
+    : call(function (source, _infer)
         return source.type
     end)
     : case 'table'
@@ -101,7 +101,7 @@ local viewNodeSwitch;viewNodeSwitch = util.switch()
         return table.concat(buf, '|')
     end)
     : case 'doc.type.name'
-    : call(function (source, infer, uri)
+    : call(function (source, _infer, uri)
         if source.signs then
             local buf = {}
             for i, sign in ipairs(source.signs) do
@@ -113,11 +113,11 @@ local viewNodeSwitch;viewNodeSwitch = util.switch()
         end
     end)
     : case 'generic'
-    : call(function (source, infer, uri)
+    : call(function (source, _infer, uri)
         return vm.getInfer(source.proto):view(uri)
     end)
     : case 'doc.generic.name'
-    : call(function (source, infer, uri)
+    : call(function (source, _infer, uri)
         local resolved = vm.getGenericResolved(source)
         if resolved then
             return vm.getInfer(resolved):view(uri)
@@ -185,16 +185,16 @@ local viewNodeSwitch;viewNodeSwitch = util.switch()
         return table.concat(buf)
     end)
     : case 'doc.type.string'
-    : call(function (source, infer)
+    : call(function (source, _infer)
         return util.viewString(source[1], source[2])
     end)
     : case 'doc.type.integer'
     : case 'doc.type.boolean'
-    : call(function (source, infer)
+    : call(function (source, _infer)
         return ('%q'):format(source[1])
     end)
     : case 'doc.type.code'
-    : call(function (source, infer)
+    : call(function (source, _infer)
         return ('`%s`'):format(source[1])
     end)
     : case 'doc.type.function'
@@ -245,7 +245,7 @@ local viewNodeSwitch;viewNodeSwitch = util.switch()
         return ('fun(%s)%s'):format(argView, regView)
     end)
     : case 'doc.field.name'
-    : call(function (source, infer, uri)
+    : call(function (source, _infer, uri)
         return vm.viewKey(source, uri)
     end)
 
diff --git a/script/vm/node.lua b/script/vm/node.lua
index fae79cbc2..f1b77513b 100644
--- a/script/vm/node.lua
+++ b/script/vm/node.lua
@@ -504,7 +504,7 @@ files.watch(function (ev, uri)
     end
 end)
 
-ws.watch(function (ev, uri)
+ws.watch(function (ev, _uri)
     if ev == 'reload' then
         vm.clearNodeCache()
     end
diff --git a/script/vm/visible.lua b/script/vm/visible.lua
index 518307a0b..6d78596b6 100644
--- a/script/vm/visible.lua
+++ b/script/vm/visible.lua
@@ -62,13 +62,13 @@ local function getVisibleType(source)
             source._visibleType = 'private'
             return 'private'
         end
-        
+
         local protectedNames = config.get(uri, 'Lua.doc.protectedName')
         if #protectedNames > 0 and match(protectedNames, fieldName) then
             source._visibleType = 'protected'
             return 'protected'
         end
-        
+
         local packageNames = config.get(uri, 'Lua.doc.packageName')
         if #packageNames > 0 and match(packageNames, fieldName) then
             source._visibleType = 'package'
diff --git a/script/workspace/loading.lua b/script/workspace/loading.lua
index 5ddc4bdab..670d70f0c 100644
--- a/script/workspace/loading.lua
+++ b/script/workspace/loading.lua
@@ -4,7 +4,6 @@ local await    = require 'await'
 local files    = require 'files'
 local config   = require 'config.config'
 local client   = require 'client'
-local util     = require 'utility'
 local furi     = require 'file-uri'
 local pub      = require 'pub'
 
diff --git a/script/workspace/require-path.lua b/script/workspace/require-path.lua
index 6553212d5..c2274e52c 100644
--- a/script/workspace/require-path.lua
+++ b/script/workspace/require-path.lua
@@ -318,14 +318,14 @@ function m.isMatchedUri(suri, uri, name)
     return false
 end
 
-files.watch(function (ev, uri)
+files.watch(function (_ev, _uri)
     for _, scp in ipairs(workspace.folders) do
         scp:set('requireManager', nil)
     end
     scope.fallback:set('requireManager', nil)
 end)
 
-config.watch(function (uri, key, value, oldValue)
+config.watch(function (uri, key, _value, _oldValue)
     if key == 'Lua.completion.requireSeparator'
     or key == 'Lua.runtime.path'
     or key == 'Lua.runtime.pathStrict' then