diff --git a/src/_utils.ts b/src/_utils.ts
index 89820be..bf41760 100644
--- a/src/_utils.ts
+++ b/src/_utils.ts
@@ -6,7 +6,10 @@ export function normalizeSlash(string_) {
   return string_.replace(/\\/g, "/");
 }
 
-export function pcall(function_, ...arguments_) {
+export function pcall<TFn extends (...args: any[]) => any>(
+  function_: TFn,
+  ...arguments_: Parameters<TFn>
+): Promise<ReturnType<TFn>> {
   try {
     return Promise.resolve(function_(...arguments_)).catch((error) =>
       perr(error)
diff --git a/src/resolve.ts b/src/resolve.ts
index cb831ec..593d58a 100644
--- a/src/resolve.ts
+++ b/src/resolve.ts
@@ -132,11 +132,14 @@ export function resolve(id: string, options?: ResolveOptions): Promise<string> {
   return pcall(resolveSync, id, options);
 }
 
-export function resolvePathSync(id: string, options?: ResolveOptions) {
+export function resolvePathSync(id: string, options?: ResolveOptions): string {
   return fileURLToPath(resolveSync(id, options));
 }
 
-export function resolvePath(id: string, options?: ResolveOptions) {
+export function resolvePath(
+  id: string,
+  options?: ResolveOptions
+): Promise<string> {
   return pcall(resolvePathSync, id, options);
 }