From 37a078d7513fce6bb027dea218cfeac6c498e229 Mon Sep 17 00:00:00 2001
From: Rongjian Zhang <pd4d10@gmail.com>
Date: Sun, 22 Mar 2020 12:17:44 +0800
Subject: [PATCH] add extends to limit props type

---
 src/runtime/internal/dev.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/runtime/internal/dev.ts b/src/runtime/internal/dev.ts
index a1280d5e98..8b53900dc5 100644
--- a/src/runtime/internal/dev.ts
+++ b/src/runtime/internal/dev.ts
@@ -98,14 +98,14 @@ export function validate_slots(name, slot, keys) {
 }
 
 type Props = Record<string, any>;
-export interface SvelteComponentDev<P = Props> {
+export interface SvelteComponentDev<P extends Props = Props> {
 	$set(props?: P): void;
 	$on<T = any>(event: string, callback: (event: CustomEvent<T>) => void): () => void;
 	$destroy(): void;
 	[accessor: string]: any;
 }
 
-export class SvelteComponentDev<P = Props> extends SvelteComponent {
+export class SvelteComponentDev<P extends Props = Props> extends SvelteComponent {
 	constructor(options: {
 		target: Element;
 		anchor?: Element;