feat: ffi: ts: adjust CoreCryptoError WIP

Author: fewerner

crypto-ffi/bindings/js/src/CoreCryptoError.ts

@@ -1,3 +1,5 @@
+import { CoreCryptoError_Tags, CoreCryptoError as CoreCryptoErrorFfi } from "./index.web";
+
 /**
  * The error structure produced by our rust code.
  **/
@@ -24,25 +26,18 @@ export class CoreCryptoError<T extends ErrorType> extends Error {
     type?: T;
 
     /* eslint @typescript-eslint/no-explicit-any: off */
-    private constructor(richError: CoreCryptoRichError<T>, ...params: any[]) {
-        super(richError.message, ...params);
-        Object.setPrototypeOf(this, new.target.prototype);
-
-        if (richError.error_name) {
-            this.name = richError.error_name;
-        }
-        if (richError.error_stack) {
-            this.errorStack = richError.error_stack;
+    private constructor(richError: unknown ) {
+        if (CoreCryptoErrorFfi.instanceOf(richError)) {
+            switch (richError.tag) {
+                case CoreCryptoError_Tags.E2ei: {
+                    super(richError.message)
+                    this.errorStack = []
+                    this.context = {e2eiError: richError.inner.e2eiError}
+                    this.type = ErrorType.E2ei
+                }
+            }
         } else {
-            this.errorStack = [];
-        }
-        if (
-            richError.context &&
-            richError.type &&
-            Object.values<string>(ErrorType).includes(richError.type)
-        ) {
-            this.context = richError.context;
-            this.type = richError.type as T;
+            throw Error("Unexpected error instance. Context: constructing CoreCryptoError.")
         }
     }