chore: add overloads for props method

Author: cexbrayat

src/dom-wrapper.ts

@@ -24,7 +24,7 @@ export class DOMWrapper<ElementType extends Element> {
   attributes(key: string): string
   attributes(key?: string): { [key: string]: string } | string {
     const attributes = this.element.attributes
-    const attributeMap: { [key: string]: string } = {}
+    const attributeMap: Record<string, string> = {}
     for (let i = 0; i < attributes.length; i++) {
       const att = attributes.item(i)!
       attributeMap[att.localName] = att.value

src/vue-wrapper.ts

@@ -45,7 +45,9 @@ export class VueWrapper<T extends ComponentPublicInstance> {
     return this.componentVM
   }
 
-  props(selector?: string) {
+  props(): { [key: string]: any }
+  props(selector: string): any
+  props(selector?: string): { [key: string]: any } | any {
     const props = this.componentVM.$props as { [key: string]: any }
     return selector ? props[selector] : props
   }

test-dts/wrapper.d-test.ts

@@ -98,3 +98,7 @@ expectType<Array<string>>(wrapper.classes())
 expectType<boolean>(wrapper.classes('class'))
 expectType<Array<string>>(domWrapper.classes())
 expectType<boolean>(domWrapper.classes('class'))
+
+// props
+expectType<{ [key: string]: any }>(wrapper.props())
+expectType<any>(wrapper.props('prop'))