From 84a053ee94aa8e337fddf84ef3651246a382f9e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mu-An=20=E6=85=95=E5=AE=89?= <me@muanchiou.com>
Date: Tue, 2 Jun 2020 12:46:20 -0400
Subject: [PATCH] Apply suggestions from code review

Co-authored-by: David Graham <dgraham@github.com>
---
 src/index.ts  | 10 +++++-----
 tsconfig.json |  2 +-
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index 02aaa35..71ea84f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -50,11 +50,11 @@ export default class IncludeFragmentElement extends HTMLElement {
     this._attached = false
   }
 
-  static get observedAttributes() {
+  static get observedAttributes(): string[] {
     return ['src']
   }
 
-  get src() {
+  get src(): string {
     const src = this.getAttribute('src')
     if (src) {
       const link = this.ownerDocument!.createElement('a')
@@ -69,7 +69,7 @@ export default class IncludeFragmentElement extends HTMLElement {
     this.setAttribute('src', val)
   }
 
-  get accept() {
+  get accept(): string {
     return this.getAttribute('accept') || ''
   }
 
@@ -77,11 +77,11 @@ export default class IncludeFragmentElement extends HTMLElement {
     this.setAttribute('accept', val)
   }
 
-  get data() {
+  get data(): Promise<string> {
     return getData(this)
   }
 
-  attributeChangedCallback(attribute: string) {
+  attributeChangedCallback(attribute: string): void {
     if (attribute === 'src') {
       // Source changed after attached so replace element.
       if (this._attached) {
diff --git a/tsconfig.json b/tsconfig.json
index 55880a6..b30193c 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "module": "esnext",
+    "module": "es2020",
     "target": "es2017",
     "strict": true,
     "declaration": true,