diff --git a/src/server/features/watchBuild.ts b/src/server/features/watchBuild.ts
index ea40c7b..7ea12c3 100644
--- a/src/server/features/watchBuild.ts
+++ b/src/server/features/watchBuild.ts
@@ -1,24 +1,10 @@
-import { commands, disposeAll, StatusBarItem, TaskOptions, Uri, window, workspace } from 'coc.nvim'
+import { commands, Disposable, disposeAll, StatusBarItem, TaskOptions, Uri, window, workspace } from 'coc.nvim'
 import path from 'path'
-import { Disposable, Location } from 'vscode-languageserver-protocol'
 import TypeScriptServiceClient from '../typescriptServiceClient'
 
 const countRegex = /Found\s+(\d+)\s+error/
 const errorRegex = /^(.+)\((\d+),(\d+)\):\s(\w+)\sTS(\d+):\s*(.+)$/
 
-interface ErrorItem {
-  location: Location
-  text: string
-  type: string
-}
-
-enum TscStatus {
-  INIT,
-  COMPILING,
-  RUNNING,
-  ERROR,
-}
-
 export default class WatchProject implements Disposable {
   private disposables: Disposable[] = []
   public static readonly id: string = 'tsserver.watchBuild'
@@ -119,7 +105,7 @@ export default class WatchProject implements Disposable {
       return
     }
 
-    const tsconfigPath = workspace.getConfiguration('tsserver').get<string>('tsconfigPath', 'tsconfig.json');
+    const tsconfigPath = workspace.getConfiguration('tsserver').get<string>('tsconfigPath', 'tsconfig.json')
     let find = await workspace.findUp([tsconfigPath])
     if (!find) {
       window.showMessage(`${tsconfigPath} not found!`, 'error')
diff --git a/src/server/languageProvider.ts b/src/server/languageProvider.ts
index 58a431d..70d6230 100644
--- a/src/server/languageProvider.ts
+++ b/src/server/languageProvider.ts
@@ -19,17 +19,17 @@ import FormattingProvider from './features/formatting'
 import HoverProvider from './features/hover'
 import ImplementationsCodeLensProvider from './features/implementationsCodeLens'
 import ImportfixProvider from './features/importFix'
+import TypeScriptInlayHintsProvider from './features/inlayHints'
 import InstallModuleProvider from './features/moduleInstall'
 import QuickfixProvider from './features/quickfix'
 import RefactorProvider from './features/refactor'
 import ReferenceProvider from './features/references'
 import ReferencesCodeLensProvider from './features/referencesCodeLens'
 import RenameProvider from './features/rename'
-import SignatureHelpProvider from './features/signatureHelp'
 import SemanticTokensProvider from './features/semanticTokens'
+import SignatureHelpProvider from './features/signatureHelp'
 import SmartSelection from './features/smartSelect'
 import TagClosing from './features/tagClosing'
-import TypeScriptInlayHintsProvider from './features/inlayHints'
 import UpdateImportsOnFileRenameHandler from './features/updatePathOnRename'
 import { OrganizeImportsCodeActionProvider } from './organizeImports'
 import TypeScriptServiceClient from './typescriptServiceClient'
diff --git a/src/server/utils/languageDescription.ts b/src/server/utils/languageDescription.ts
index c3a09af..a796a9a 100644
--- a/src/server/utils/languageDescription.ts
+++ b/src/server/utils/languageDescription.ts
@@ -3,13 +3,14 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 import * as languageModeIds from './languageModeIds'
+import path from 'path'
+import { Uri } from 'coc.nvim'
 
 export interface LanguageDescription {
   readonly id: string
   readonly diagnosticSource: string
   readonly diagnosticLanguage: DiagnosticLanguage
   readonly modeIds: string[]
-  readonly configFile?: string
   readonly isExternal?: boolean
   readonly diagnosticOwner: string
   readonly configFilePattern?: RegExp
@@ -26,10 +27,8 @@ export const standardLanguageDescriptions: LanguageDescription[] = [
     id: 'typescript',
     diagnosticSource: 'ts',
     diagnosticOwner: 'typescript',
-    modeIds: [languageModeIds.typescript, languageModeIds.typescriptreact,
-    languageModeIds.typescripttsx, languageModeIds.typescriptjsx],
     diagnosticLanguage: DiagnosticLanguage.TypeScript,
-    configFile: 'tsconfig.json',
+    modeIds: [languageModeIds.typescript, languageModeIds.typescriptreact, languageModeIds.typescripttsx, languageModeIds.typescriptjsx],
     configFilePattern: /^tsconfig(\..*)?\.json$/gi,
     standardFileExtensions: [
       'ts',
@@ -42,9 +41,7 @@ export const standardLanguageDescriptions: LanguageDescription[] = [
     id: 'javascript',
     diagnosticSource: 'ts',
     diagnosticOwner: 'typescript',
-    modeIds: [languageModeIds.javascript, languageModeIds.javascriptreact, languageModeIds.javascriptjsx],
-    diagnosticLanguage: DiagnosticLanguage.JavaScript,
-    configFile: 'jsconfig.json',
+    modeIds: [languageModeIds.javascript, languageModeIds.javascriptreact, languageModeIds.javascriptjsx], diagnosticLanguage: DiagnosticLanguage.JavaScript,
     configFilePattern: /^jsconfig(\..*)?\.json$/gi,
     standardFileExtensions: [
       'js',
@@ -56,3 +53,19 @@ export const standardLanguageDescriptions: LanguageDescription[] = [
     ]
   }
 ]
+
+export function isTsConfigFileName(fileName: string): boolean {
+  return /^tsconfig\.(.+\.)?json$/i.test(path.basename(fileName))
+}
+
+export function isJsConfigOrTsConfigFileName(fileName: string): boolean {
+  return /^[jt]sconfig\.(.+\.)?json$/i.test(path.basename(fileName))
+}
+
+export function doesResourceLookLikeATypeScriptFile(resource: Uri): boolean {
+  return /\.(tsx?|mts|cts)$/i.test(resource.fsPath)
+}
+
+export function doesResourceLookLikeAJavaScriptFile(resource: Uri): boolean {
+  return /\.(jsx?|mjs|cjs)$/i.test(resource.fsPath)
+}
diff --git a/tsconfig.json b/tsconfig.json
index 6464e65..40d3beb 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,6 +8,7 @@
     "allowUnreachableCode": true,
     "allowUnusedLabels": true,
     "forceConsistentCasingInFileNames": true,
+    "noEmit": true,
     "noImplicitAny": false,
     "noImplicitReturns": false,
     "noUnusedLocals": false,