diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index b92bfa27b6576..067b66dca5714 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -1307,13 +1307,13 @@ export function getConfigFileParsingDiagnostics(configFileParseResult: ParsedCom
  * A function for determining if a given file is esm or cjs format, assuming modern node module resolution rules, as configured by the
  * `options` parameter.
  *
- * @param fileName The normalized absolute path to check the format of (it need not exist on disk)
+ * @param fileName The file name to check the format of (it need not exist on disk)
  * @param [packageJsonInfoCache] A cache for package file lookups - it's best to have a cache when this function is called often
  * @param host The ModuleResolutionHost which can perform the filesystem lookups for package json data
  * @param options The compiler options to perform the analysis under - relevant options are `moduleResolution` and `traceResolution`
  * @returns `undefined` if the path has no relevant implied format, `ModuleKind.ESNext` for esm format, and `ModuleKind.CommonJS` for cjs format
  */
-export function getImpliedNodeFormatForFile(fileName: Path, packageJsonInfoCache: PackageJsonInfoCache | undefined, host: ModuleResolutionHost, options: CompilerOptions): ResolutionMode {
+export function getImpliedNodeFormatForFile(fileName: string, packageJsonInfoCache: PackageJsonInfoCache | undefined, host: ModuleResolutionHost, options: CompilerOptions): ResolutionMode {
     const result = getImpliedNodeFormatForFileWorker(fileName, packageJsonInfoCache, host, options);
     return typeof result === "object" ? result.impliedNodeFormat : result;
 }
diff --git a/tests/baselines/reference/api/typescript.d.ts b/tests/baselines/reference/api/typescript.d.ts
index 235f8aeed7c3b..c723fbebb0a16 100644
--- a/tests/baselines/reference/api/typescript.d.ts
+++ b/tests/baselines/reference/api/typescript.d.ts
@@ -9914,13 +9914,13 @@ declare namespace ts {
      * A function for determining if a given file is esm or cjs format, assuming modern node module resolution rules, as configured by the
      * `options` parameter.
      *
-     * @param fileName The normalized absolute path to check the format of (it need not exist on disk)
+     * @param fileName The file name to check the format of (it need not exist on disk)
      * @param [packageJsonInfoCache] A cache for package file lookups - it's best to have a cache when this function is called often
      * @param host The ModuleResolutionHost which can perform the filesystem lookups for package json data
      * @param options The compiler options to perform the analysis under - relevant options are `moduleResolution` and `traceResolution`
      * @returns `undefined` if the path has no relevant implied format, `ModuleKind.ESNext` for esm format, and `ModuleKind.CommonJS` for cjs format
      */
-    function getImpliedNodeFormatForFile(fileName: Path, packageJsonInfoCache: PackageJsonInfoCache | undefined, host: ModuleResolutionHost, options: CompilerOptions): ResolutionMode;
+    function getImpliedNodeFormatForFile(fileName: string, packageJsonInfoCache: PackageJsonInfoCache | undefined, host: ModuleResolutionHost, options: CompilerOptions): ResolutionMode;
     /**
      * Create a new 'Program' instance. A Program is an immutable collection of 'SourceFile's and a 'CompilerOptions'
      * that represent a compilation unit.