diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 92898f8b4f8..3d8d6c7dcd2 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -1113,6 +1113,7 @@ import {
     TypeReferenceNode,
     TypeReferenceSerializationKind,
     TypeReferenceType,
+    typesIncludesWildcard,
     TypeVariable,
     unescapeLeadingUnderscores,
     UnionOrIntersectionType,
@@ -27628,25 +27629,25 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             case "console":
                 return Diagnostics.Cannot_find_name_0_Do_you_need_to_change_your_target_library_Try_changing_the_lib_compiler_option_to_include_dom;
             case "$":
-                return compilerOptions.types?.includes("*")
+                return typesIncludesWildcard(compilerOptions.types)
                     ? Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_save_dev_types_Slashjquery
                     : Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_save_dev_types_Slashjquery_and_then_add_jquery_to_the_types_field_in_your_tsconfig;
             case "describe":
             case "suite":
             case "it":
             case "test":
-                return compilerOptions.types?.includes("*")
+                return typesIncludesWildcard(compilerOptions.types)
                     ? Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_a_test_runner_Try_npm_i_save_dev_types_Slashjest_or_npm_i_save_dev_types_Slashmocha
                     : Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_a_test_runner_Try_npm_i_save_dev_types_Slashjest_or_npm_i_save_dev_types_Slashmocha_and_then_add_jest_or_mocha_to_the_types_field_in_your_tsconfig;
             case "process":
             case "require":
             case "Buffer":
             case "module":
-                return compilerOptions.types?.includes("*")
+                return typesIncludesWildcard(compilerOptions.types)
                     ? Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_save_dev_types_Slashnode
                     : Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_save_dev_types_Slashnode_and_then_add_node_to_the_types_field_in_your_tsconfig;
             case "Bun":
-                return compilerOptions.types?.includes("*")
+                return typesIncludesWildcard(compilerOptions.types)
                     ? Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_Bun_Try_npm_i_save_dev_types_Slashbun
                     : Diagnostics.Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_Bun_Try_npm_i_save_dev_types_Slashbun_and_then_add_bun_to_the_types_field_in_your_tsconfig;
             case "Map":
diff --git a/src/compiler/moduleNameResolver.ts b/src/compiler/moduleNameResolver.ts
index 86355df079b..9dcf70a4caf 100644
--- a/src/compiler/moduleNameResolver.ts
+++ b/src/compiler/moduleNameResolver.ts
@@ -801,6 +801,14 @@ export function resolvePackageNameToPackageJson(
     });
 }
 
+/**
+ * Returns true if the types compiler option includes the "*" wildcard.
+ * @internal
+ */
+export function typesIncludesWildcard(types: readonly string[] | undefined): boolean {
+    return types?.includes("*") ?? false;
+}
+
 /**
  * Given a set of options, returns the set of type directive names
  *   that should be included for this program automatically.
@@ -815,7 +823,7 @@ export function getAutomaticTypeDirectiveNames(options: CompilerOptions, host: M
         return emptyArray;
     }
 
-    if (!options.types.includes("*")) {
+    if (!typesIncludesWildcard(options.types)) {
         // No wildcard, no need to iterate anything
         return options.types;
     }
diff --git a/src/compiler/programDiagnostics.ts b/src/compiler/programDiagnostics.ts
index ead43fb745d..816fb177c34 100644
--- a/src/compiler/programDiagnostics.ts
+++ b/src/compiler/programDiagnostics.ts
@@ -52,6 +52,7 @@ import {
     removeSuffix,
     SourceFile,
     TsConfigSourceFile,
+    typesIncludesWildcard,
 } from "./_namespaces/ts.js";
 
 interface FileReasonToChainCache {
@@ -400,7 +401,7 @@ export function createProgramDiagnostics(getCompilerOptionsObjectLiteralSyntax:
                     ) :
                     undefined;
             case FileIncludeKind.AutomaticTypeDirectiveFile:
-                if (options.types?.includes("*")) return undefined;
+                if (typesIncludesWildcard(options.types)) return undefined;
                 configFileNode = getOptionsSyntaxByArrayElementValue(getCompilerOptionsObjectLiteralSyntax(), "types", reason.typeReference);
                 message = Diagnostics.File_is_entry_point_of_type_library_specified_here;
                 break;
diff --git a/src/compiler/resolutionCache.ts b/src/compiler/resolutionCache.ts
index 4545b880907..32739fb2a73 100644
--- a/src/compiler/resolutionCache.ts
+++ b/src/compiler/resolutionCache.ts
@@ -73,6 +73,7 @@ import {
     startsWith,
     StringLiteralLike,
     trace,
+    typesIncludesWildcard,
     updateResolutionField,
     WatchDirectoryFlags,
 } from "./_namespaces/ts.js";
@@ -1667,7 +1668,7 @@ export function createResolutionCache(resolutionHost: ResolutionCacheHost, rootD
      */
     function updateTypeRootsWatch() {
         const options = resolutionHost.getCompilationSettings();
-        if (options.types && !options.types.includes("*")) {
+        if (options.types && !typesIncludesWildcard(options.types)) {
             // No need to do any watch since resolution cache is going to handle the failed lookups
             // for the types added by this
             closeTypeRootsWatch();
diff --git a/src/compiler/watch.ts b/src/compiler/watch.ts
index ee5905a336a..53b4c6ee56c 100644
--- a/src/compiler/watch.ts
+++ b/src/compiler/watch.ts
@@ -97,6 +97,7 @@ import {
     sourceMapCommentRegExpDontCareLineStart,
     sys,
     System,
+    typesIncludesWildcard,
     WatchCompilerHost,
     WatchCompilerHostOfConfigFile,
     WatchCompilerHostOfFilesAndCompilerOptions,
@@ -529,7 +530,7 @@ export function fileIncludeReasonToDiagnostics(program: Program, reason: FileInc
                 options.outFile ? "--outFile" : "--out",
             );
         case FileIncludeKind.AutomaticTypeDirectiveFile: {
-            const messageAndArgs: DiagnosticAndArguments = options.types?.includes("*") ?
+            const messageAndArgs: DiagnosticAndArguments = typesIncludesWildcard(options.types) ?
                 reason.packageId ?
                     [Diagnostics.Entry_point_for_implicit_type_library_0_with_packageId_1, reason.typeReference, packageIdToString(reason.packageId)] :
                     [Diagnostics.Entry_point_for_implicit_type_library_0, reason.typeReference] :
diff --git a/src/jsTyping/jsTyping.ts b/src/jsTyping/jsTyping.ts
index 8278c5929c6..7f83a77beec 100644
--- a/src/jsTyping/jsTyping.ts
+++ b/src/jsTyping/jsTyping.ts
@@ -28,6 +28,7 @@ import {
     some,
     toFileNameLowerCase,
     TypeAcquisition,
+    typesIncludesWildcard,
     Version,
     versionMajorMinor,
 } from "./_namespaces/ts.js";
@@ -133,8 +134,7 @@ export function discoverTypings(
     const exclude = typeAcquisition.exclude || [];
 
     // Directories to search for package.json, bower.json and other typing information
-    if (compilerOptions.types?.includes("*")) {
-
+    if (typesIncludesWildcard(compilerOptions.types)) {
         const possibleSearchDirs = new Set(fileNames.map(getDirectoryPath));
         possibleSearchDirs.add(projectRootPath);
         possibleSearchDirs.forEach(searchDir => {