node fixes, updates

1 files changed, 74 insertions, 0 deletions

diff --git a/node_modules/@webassemblyjs/utf8/lib/decoder.js b/node_modules/@webassemblyjs/utf8/lib/decoder.js
new file mode 100644
index 00000000..305a2b6e
--- /dev/null
+++ b/node_modules/@webassemblyjs/utf8/lib/decoder.js
@@ -0,0 +1,74 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.decode = decode;
+
+function con(b) {
+  if ((b & 0xc0) === 0x80) {
+    return b & 0x3f;
+  } else {
+    throw new Error("invalid UTF-8 encoding");
+  }
+}
+
+function code(min, n) {
+  if (n < min || 0xd800 <= n && n < 0xe000 || n >= 0x10000) {
+    throw new Error("invalid UTF-8 encoding");
+  } else {
+    return n;
+  }
+}
+
+function decode(bytes) {
+  return _decode(bytes).map(function (x) {
+    return String.fromCharCode(x);
+  }).join("");
+}
+
+function _decode(bytes) {
+  var result = [];
+
+  while (bytes.length > 0) {
+    var b1 = bytes[0];
+
+    if (b1 < 0x80) {
+      result.push(code(0x0, b1));
+      bytes = bytes.slice(1);
+      continue;
+    }
+
+    if (b1 < 0xc0) {
+      throw new Error("invalid UTF-8 encoding");
+    }
+
+    var b2 = bytes[1];
+
+    if (b1 < 0xe0) {
+      result.push(code(0x80, ((b1 & 0x1f) << 6) + con(b2)));
+      bytes = bytes.slice(2);
+      continue;
+    }
+
+    var b3 = bytes[2];
+
+    if (b1 < 0xf0) {
+      result.push(code(0x800, ((b1 & 0x0f) << 12) + (con(b2) << 6) + con(b3)));
+      bytes = bytes.slice(3);
+      continue;
+    }
+
+    var b4 = bytes[3];
+
+    if (b1 < 0xf8) {
+      result.push(code(0x10000, (((b1 & 0x07) << 18) + con(b2) << 12) + (con(b3) << 6) + con(b4)));
+      bytes = bytes.slice(4);
+      continue;
+    }
+
+    throw new Error("invalid UTF-8 encoding");
+  }
+
+  return result;
+}
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