增加部分语法检测

src/lib/checks.js

@@ -31,3 +31,42 @@ export function checkMedia(type, isAudio = 1) {
   }
   return 0
 }
+
+export function checkAsyncAwait() {
+  try {
+    eval('async function foo(){return await 123}')
+    return 1.25
+  } catch (e) {
+    return 0
+  }
+}
+
+export function checkPrivateFeatures() {
+  try {
+    eval('class Foo { #bar = 3}')
+    return 1.25
+  } catch (e) {
+    return 0
+  }
+}
+
+export function checkObjectSpread() {
+  try {
+    eval(`let a = [11, 22]
+    let b = [...a]
+    ;[a[1], a[0]] = [a[0], a[1]]`)
+    return 1
+  } catch (e) {
+    return 0
+  }
+}
+
+export function checkOptionalChaining() {
+  try {
+    // ?。 和 ?? 同时期出现的, 检测一个即可
+    window.a?.b?.c()
+    return 1
+  } catch (e) {
+    return 0
+  }
+}

src/store.js

@@ -1,7 +1,14 @@
 import { reactive } from 'vue'
 
 import * as env from '@/lib/env.js'
-import { checkCanvas, checkMedia } from '@/lib/checks.js'
+import {
+  checkCanvas,
+  checkMedia,
+  checkAsyncAwait,
+  checkPrivateFeatures,
+  checkObjectSpread,
+  checkOptionalChaining
+} from '@/lib/checks.js'
 
 const store = reactive({
   scores: 80,
@@ -160,30 +167,48 @@ const store = reactive({
       ]
     },
     {
-      name: 'ES6模块',
+      name: '一些语法支持',
       total: 0,
-      factor: 40,
-      scores: [1, env.SUPPORT_ASSERTIONS ? 2.5 : 0],
-      items: ['import/export', 'Import assertions']
-    },
-    {
-      name: '性能',
-      total: 0,
-      factor: 70,
-      scores: [!!navigator.serviceWorker ^ 0, window.WebAssembly ? 1.5 : 0],
-      items: ['Web Workers', 'WebAssembly']
+      factor: 60,
+      scores: [
+        !!window.BigInt ^ 0,
+        checkObjectSpread(),
+        checkOptionalChaining(),
+        1 /* 能打开这个页面, 就是支持esm的了 */,
+        env.SUPPORT_ASSERTIONS ? 2.5 : 0,
+        checkAsyncAwait(),
+        checkPrivateFeatures()
+      ],
+      items: [
+        'BigInt',
+        'Object Spread',
+        '?. and ??',
+        'import/export',
+        'Import assertions',
+        'async / await',
+        'Private class features'
+      ]
     },
     {
       name: '其他',
       total: 0,
       factor: 80,
       scores: [
+        !!navigator.serviceWorker ^ 0,
+        window.WebAssembly ? 1.5 : 0,
         !!navigator.bluetooth ^ 0,
         navigator.clipboard ? 0.8 : 0,
         navigator.usb ? 2 : 0,
         !!navigator.windowControlsOverlay ^ 0
       ],
-      items: ['Bluetooth', 'clipboard', 'USB', 'Window Controls Overlay']
+      items: [
+        'Web Workers',
+        'WebAssembly',
+        'Bluetooth',
+        'clipboard',
+        'USB',
+        'Window Controls Overlay'
+      ]
     }
   ]
 })