cmd/jsutils: add utils

cmd/jsutils/README.md

@@ -11,11 +11,15 @@ Install node.js dependency:
     npm install
 ```
 ## Run
-mainnet
+mainnet validators version
 ```bash
     npm run startMainnet
 ```
-testnet
+testnet validators version
 ```bash
     npm run startTestnet
+```
+Transaction count
+```bash
+node gettxcount.js --rpc ${url} --startNum ${start} --endNum ${end}
 ```

cmd/jsutils/gettxcount.js

@@ -0,0 +1,31 @@
+import { ethers } from "ethers";
+import program from "commander";
+
+program.option("--rpc <rpc>", "Rpc");
+program.option("--startNum <startNum>", "start num")
+program.option("--endNum <endNum>", "end num")
+program.parse(process.argv);
+
+const provider = new ethers.JsonRpcProvider(program.rpc)
+
+const main = async () => {
+    let txCount = 0;
+    let num = 0;
+    console.log("Find the max txs count between", program.startNum, "and", program.endNum);
+    for (let i = program.startNum; i < program.endNum; i++) {
+         let x = await provider.send("eth_getBlockTransactionCountByNumber", [
+            ethers.toQuantity(i)]);
+         let a = ethers.toNumber(x)
+         if (a > txCount) {
+             num = i;
+             txCount = a;
+         }
+    }
+    console.log("BlockNum = ", num, "TxCount =", txCount);
+};
+
+main().then(() => process.exit(0))
+    .catch((error) => {
+        console.error(error);
+        process.exit(1);
+    });