fix(build): align TypeScript and test imports with NodeNext builds and safely copy Uint8Array inputs in browser processing

ts_web/smartpreview.ts

@@ -243,7 +243,7 @@ export class SmartPreview {
       if (input instanceof ArrayBuffer) {
         buffer = input;
       } else if (input instanceof Uint8Array) {
-        buffer = input.buffer.slice(input.byteOffset, input.byteOffset + input.byteLength);
+        buffer = this.uint8ArrayToArrayBuffer(input);
       } else if (input instanceof File || input instanceof Blob) {
         // Read first few bytes to detect format
         const headerBlob = input.slice(0, 8);
@@ -299,4 +299,10 @@ export class SmartPreview {
     await instance.init();
     return instance;
   }
-}
+
+  private uint8ArrayToArrayBuffer(input: Uint8Array): ArrayBuffer {
+    const arrayBuffer = new ArrayBuffer(input.byteLength);
+    new Uint8Array(arrayBuffer).set(input);
+    return arrayBuffer;
+  }
+}