fix(build,json): replace lodash.clonedeep with structuredClone and migrate package metadata to smartconfig

ts/bufferhandling.ts

@@ -14,22 +14,34 @@ interface IEncodedBuffer {
 type TParseReviver = (this: any, key: string, value: any) => any;
 type TParseReplacer = (this: any, key: string, value: any) => any;
 
+interface INodeBufferLike extends Uint8Array {
+  toString(): string;
+  toString(encoding: 'base64'): string;
+}
+
+interface INodeBufferConstructor {
+  from(data: Uint8Array): INodeBufferLike;
+  from(data: string, encoding: 'base64'): INodeBufferLike;
+}
+
+const getNodeBuffer = (): INodeBufferConstructor | undefined => {
+  return (globalThis as typeof globalThis & { Buffer?: INodeBufferConstructor }).Buffer;
+};
+
 // Utility functions to handle base64 encoding/decoding in a cross-platform way
 function base64Encode(data: Uint8Array): string {
-  // Prefer Node's Buffer when available
-  if (typeof Buffer !== 'undefined') {
-    // @ts-ignore Buffer might not exist in browser builds
-    return Buffer.from(data).toString('base64');
+  const NodeBuffer = getNodeBuffer();
+  if (NodeBuffer) {
+    return NodeBuffer.from(data).toString('base64');
   }
   // Fallback for browsers
   return btoa(String.fromCharCode(...data));
 }
 
 function base64Decode(str: string): Uint8Array {
-  // Prefer Node's Buffer when available
-  if (typeof Buffer !== 'undefined') {
-    // @ts-ignore Buffer might not exist in browser builds
-    const buf = Buffer.from(str, 'base64');
+  const NodeBuffer = getNodeBuffer();
+  if (NodeBuffer) {
+    const buf = NodeBuffer.from(str, 'base64');
     return new Uint8Array(buf.buffer, buf.byteOffset, buf.byteLength);
   }
   // Fallback for browsers