cbor serde implementation

packages/core/package.json

@@ -30,6 +30,7 @@
     "@smithy/smithy-client": "workspace:^",
     "@smithy/types": "workspace:^",
     "@smithy/util-middleware": "workspace:^",
+    "@smithy/util-utf8": "workspace:^",
     "tslib": "^2.6.2"
   },
   "engines": {

packages/core/src/submodules/cbor/cbor.spec.ts

@@ -0,0 +1,31 @@
+import { cbor } from "./cbor";
+
+const toBytes = (string) => {
+  const bytes = [] as number[];
+  string.replace(/../g, function (pair) {
+    bytes.push(parseInt(pair, 16));
+  });
+  return new Uint8Array(bytes);
+};
+
+describe("cbor", () => {
+  it("should", async () => {
+    const encoded = toBytes(
+      "A663696E74FB41DFFFFFFFC66666666E6567696E742065666C6F6174F9FC00636D6170A2666E6567696E742065666C6F6174C2F93E006474727565F56566616C73659F01F4FF"
+    );
+    console.log("encoded", encoded);
+
+    const decoded = cbor.deserialize(encoded);
+    console.log("decoded", decoded);
+
+    const reencoded = cbor.serialize(decoded);
+    console.log("reencoded", reencoded);
+
+    const redecoded = cbor.deserialize(reencoded);
+    console.log("redecoded", redecoded);
+
+    const badobj = {} as any;
+    badobj.a = badobj;
+    cbor.serialize(badobj);
+  });
+});