fix: fix browser api mocking

Author: CGNonofr

browserMock.js

@@ -52,8 +52,81 @@ Object.defineProperty(window, 'ResizeObserver', {
 })
 
 Object.defineProperty(window, 'TextEncoder', {
-  value: class TextObserver {
-    constructor(stringUrl) {}
-    encode(src) { return src }
+  value: class TextEncoder {
+    encode (string) {
+      var octets = [];
+      var length = string.length;
+      var i = 0;
+      while (i < length) {
+        var codePoint = string.codePointAt(i);
+        var c = 0;
+        var bits = 0;
+        if (codePoint <= 0x0000007F) {
+          c = 0;
+          bits = 0x00;
+        } else if (codePoint <= 0x000007FF) {
+          c = 6;
+          bits = 0xC0;
+        } else if (codePoint <= 0x0000FFFF) {
+          c = 12;
+          bits = 0xE0;
+        } else if (codePoint <= 0x001FFFFF) {
+          c = 18;
+          bits = 0xF0;
+        }
+        octets.push(bits | (codePoint >> c));
+        c -= 6;
+        while (c >= 0) {
+          octets.push(0x80 | ((codePoint >> c) & 0x3F));
+          c -= 6;
+        }
+        i += codePoint >= 0x10000 ? 2 : 1;
+      }
+      return Uint8Array.from(octets);
+    }
   }
+})
+Object.defineProperty(window, 'TextDecoder', {
+  value: class TextDecoder {
+    decode (octets) {
+      var string = "";
+      var i = 0;
+      while (i < octets.length) {
+        var octet = octets[i];
+        var bytesNeeded = 0;
+        var codePoint = 0;
+        if (octet <= 0x7F) {
+          bytesNeeded = 0;
+          codePoint = octet & 0xFF;
+        } else if (octet <= 0xDF) {
+          bytesNeeded = 1;
+          codePoint = octet & 0x1F;
+        } else if (octet <= 0xEF) {
+          bytesNeeded = 2;
+          codePoint = octet & 0x0F;
+        } else if (octet <= 0xF4) {
+          bytesNeeded = 3;
+          codePoint = octet & 0x07;
+        }
+        if (octets.length - i - bytesNeeded > 0) {
+          var k = 0;
+          while (k < bytesNeeded) {
+            octet = octets[i + k + 1];
+            codePoint = (codePoint << 6) | (octet & 0x3F);
+            k += 1;
+          }
+        } else {
+          codePoint = 0xFFFD;
+          bytesNeeded = octets.length - i;
+        }
+        string += String.fromCodePoint(codePoint);
+        i += bytesNeeded + 1;
+      }
+      return string
+    }
+  }
+})
+
+Object.defineProperty(window, 'Buffer', {
+  value: undefined
 })