Validate input of RPC requests

.prettierrc.json

@@ -1,7 +1,7 @@
 {
   "trailingComma": "all",
   "useTabs": false,
-  "printWidth": 120,
+  "printWidth": 80,
   "tabWidth": 2,
   "arrowParens": "avoid",
   "semi": true,

README.md

@@ -11,7 +11,11 @@ Ethereum RPC proxy that verifies RPC responses against given trusted block hashe
 ```ts
 import { VerifyingProvider, startServer } from 'patronum';
 
-const provider = new VerifyingProvider(trustlessRPCURL, trustedBlockNumber, trustedBlockHash);
+const provider = new VerifyingProvider(
+  trustlessRPCURL,
+  trustedBlockNumber,
+  trustedBlockHash,
+);
 await startServer(provider, PORT);
 ```
 
@@ -20,7 +24,11 @@ await startServer(provider, PORT);
 ```ts
 import { VerifyingProvider } from 'patronum';
 
-const provider = new VerifyingProvider(trustlessRPCURL, trustedBlockNumber, trustedBlockHash);
+const provider = new VerifyingProvider(
+  trustlessRPCURL,
+  trustedBlockNumber,
+  trustedBlockHash,
+);
 
 console.log(await provider.getBalance(address, blockTag));
 

package.json

@@ -59,6 +59,6 @@
     "rpc"
   ],
   "lint-staged": {
-    "*.{js,css,md}": "prettier --write"
+    "*.{ts,js,md}": "prettier --write"
   }
 }

src/constants.ts

@@ -3,6 +3,7 @@ export const ZERO_ADDR = '0x0000000000000000000000000000000000000000';
 export const GAS_LIMIT = '0x1c9c380';
 export const REQUEST_BATCH_SIZE = 10;
 export const MAX_SOCKET = 10;
-export const EMPTY_ACCOUNT_EXTCODEHASH = '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470';
+export const EMPTY_ACCOUNT_EXTCODEHASH =
+  '0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470';
 export const MAX_BLOCK_HISTORY = BigInt(256);
 export const MAX_BLOCK_FUTURE = BigInt(3);

src/errors.ts

@@ -1,20 +1,13 @@
-const INVALID_PARAMS = -32602;
-const INTERNAL_ERROR = -32603;
+import { JSONRPCErrorCode, JSONRPCErrorException } from 'json-rpc-2.0';
 
-export const PARSE_ERROR = -32700;
-export const METHOD_NOT_FOUND = -32601;
-export const INVALID_REQUEST = -32600;
-
-export class InternalError extends Error {
-	public code = INTERNAL_ERROR
-	constructor(message: string) {
-	  super(message);
-	}
+export class InternalError extends JSONRPCErrorException {
+  constructor(message: string) {
+    super(message, JSONRPCErrorCode.InternalError);
+  }
 }
 
-export class InvalidParamsError extends Error {
-	public code = INVALID_PARAMS
-	constructor(message: string) {
-	  super(message);
-	}
-}
+export class InvalidParamsError extends JSONRPCErrorException {
+  constructor(message: string) {
+    super(message, JSONRPCErrorCode.InvalidParams);
+  }
+}