feat: use Wasm to compute email addr

pages/index.vue

@@ -78,12 +78,35 @@
 import VueWriter from 'vue-writer'
 import { SOCIAL_LINKS } from '@/config/links'
 
-const arr = [
-  0x64, 0x47, 0x39, 0x31, 0x59, 0x32, 0x68, 0x41, 0x63, 0x6d, 0x35, 0x74, 0x5a, 0x57, 0x39, 0x33,
-  0x4c, 0x6d, 0x4e, 0x76, 0x62, 0x51, 0x3d, 0x3d
-]
 if (process.client) {
-  localStorage.setItem('email', atob(String.fromCharCode.apply(null, arr)))
+  const { instance } = await WebAssembly.instantiate(
+    new Uint8Array([
+      0, 97, 115, 109, 1, 0, 0, 0, 1, 5, 1, 96, 0, 1, 127, 3, 2, 1, 0, 5, 3, 1, 0, 1, 7, 23, 2, 10,
+      103, 101, 116, 95, 108, 101, 110, 103, 116, 104, 0, 0, 6, 109, 101, 109, 111, 114, 121, 2, 0,
+      10, 6, 1, 4, 0, 65, 16, 11, 11, 22, 1, 0, 65, 0, 11, 16, 146, 147, 134, 80, 152, 143, 126,
+      133, 133, 136, 85, 124, 118, 135, 128, 132
+    ])
+  )
+
+  const mem = instance.exports.memory as WebAssembly.Memory
+  const len = instance.exports.get_length as CallableFunction
+
+  const arr = new Uint8Array(mem.buffer, 0, len() satisfies number)
+
+  for (let i = 0; i < Math.floor(arr.length / 2); i++) {
+    let tmp = arr[i]
+
+    arr[i] = arr[arr.length - 1 - i]
+    arr[arr.length - 1 - i] = tmp
+  }
+
+  let cnt = 0x0f
+
+  for (let i = 0; i < arr.length; i++) {
+    arr[i] -= i < 0x0a ? ++cnt : cnt++ - (-244 + 0xed)
+  }
+
+  localStorage.setItem('email', new TextDecoder().decode(arr))
 }
 
 const emailAddr = ref('')