Feat/jrpc engine v2

package.json

@@ -72,6 +72,7 @@
     "@toruslabs/eslint-config-typescript": "^4.1.4",
     "@toruslabs/torus-scripts": "^7.1.6",
     "@types/color": "^4.2.0",
+    "@types/deep-freeze-strict": "^1.1.2",
     "@types/elliptic": "^6.4.18",
     "@types/end-of-stream": "^1.4.4",
     "@types/json-stable-stringify": "^1.2.0",
@@ -129,11 +130,13 @@
     "base64url": "^3.0.1",
     "bip39": "^3.1.0",
     "bn.js": "^5.2.2",
+    "deep-freeze-strict": "^1.1.1",
     "deepmerge": "^4.3.1",
     "enc-utils": "^3.0.0",
     "end-of-stream": "^1.4.5",
     "events": "^3.3.0",
     "json-stable-stringify": "^1.3.0",
+    "klona": "^2.0.6",
     "loglevel": "^1.9.2",
     "once": "^1.4.0",
     "pump": "^3.0.3",

src/jrpc/errors/error-classes.ts

@@ -82,13 +82,14 @@
     };
 
     if (this.data !== undefined) {
-      // `this.data` is not guaranteed to be a plain object, but this simplifies
-      // the type guard below. We can safely cast it because we know it's a
-      // JSON-serializable value.
-      serialized.data = this.data as { [key: string]: Json };
-
       if (isPlainObject(this.data)) {
-        serialized.data.cause = serializeCause((this.data as { cause?: unknown }).cause);
+        // Spread to avoid mutating `this.data` when setting `cause`.
+        serialized.data = {
+          ...(this.data as { [key: string]: Json }),
+          cause: serializeCause((this.data as { cause?: unknown }).cause),
+        };
+      } else {
+        serialized.data = this.data as { [key: string]: Json };
       }
     }
 
@@ -112,7 +113,7 @@
 
 /**
  * Error subclass implementing Ethereum Provider errors per EIP-1193.
  * Permits integer error codes in the [ 1000 <= 4999 ] range.
  */
 export class EthereumProviderError<Data extends OptionalDataWithOptionalCause> extends JsonRpcError<Data> {
   /**

src/jrpc/index.ts

@@ -8,3 +8,8 @@ export { PostMessageStream } from "./postMessageStream";
 export { SafeEventEmitter } from "./safeEventEmitter";
 export { SerializableError } from "./serializableError";
 export { Substream } from "./substream";
+
+/**
+ * Export the v2 module.
+ */
+export * from "./v2";

src/jrpc/interfaces.ts

@@ -26,6 +26,7 @@ export interface JRPCNotification<Params extends JRPCParams = JRPCParams> {
 }
 
 export interface JRPCRequest<Params extends JRPCParams = JRPCParams> extends JRPCBase {
+  id: JRPCId;
   method: string;
   params?: Params;
 }