Resolve "WIP: UTXO Selection and Storage"

packages/stack/src/utils/ext-error.ts

@@ -0,0 +1,20 @@
+export class ExtError extends Error {
+  constructor(
+    message: string,
+    public readonly details?: string,
+  ) {
+    super(message);
+
+    // Capture the stack trace (V8 engines only)
+    // This step ensures the stack trace is captured correctly
+    if (Error.captureStackTrace) {
+      Error.captureStackTrace(this, ExtError);
+    } else {
+      this.stack = new Error().stack;
+      console.error(this.stack);
+    }
+
+    // 👇️ because we are extending a built-in class
+    Object.setPrototypeOf(this, ExtError.prototype);
+  }
+}