diff --git a/src/resource.ts b/src/resource.ts
index 4d7637d..681ea0d 100644
--- a/src/resource.ts
+++ b/src/resource.ts
@@ -5,11 +5,11 @@ import * as path from "path";
 export default class Resource {
   constructor(public readonly path: string) {}
 
-  toString() {
+  toString(): string {
     return this.path;
   }
 
-  get isUrl() {
+  get isUrl(): boolean {
     try {
       new URL(this.path);
       return true;
@@ -18,13 +18,13 @@ export default class Resource {
     }
   }
 
-  get name() {
+  get name(): string {
     return this.isUrl
       ? new URL(this.path).pathname.split("/").pop() || ""
       : path.basename(this.path);
   }
 
-  get parent() {
+  get parent(): Resource {
     if (this.isUrl) {
       const url = new URL(this.path);
       url.pathname = path.dirname(url.pathname);
@@ -33,7 +33,7 @@ export default class Resource {
     return new Resource(path.dirname(this.path));
   }
 
-  get ext() {
+  get ext(): string {
     return this.isUrl
       ? path.extname(new URL(this.path).pathname)
       : path.extname(this.path);