utils: add check_blobtx.js (#2463)

cmd/jsutils/check_blobtx.js

@@ -0,0 +1,51 @@
+import { ethers } from "ethers";
+import program from "commander";
+
+// depends on ethjs v6.11.0+ for 4844, https://github.com/ethers-io/ethers.js/releases/tag/v6.11.0
+// BSC testnet enabled 4844 on block: 39539137
+// Usage:
+//   nvm use 20
+//   node check_blobtx.js --rpc https://data-seed-prebsc-1-s1.binance.org:8545 --startNum 39539137
+//   node check_blobtx.js --rpc https://data-seed-prebsc-1-s1.binance.org:8545 --startNum 39539137 --endNum 40345994
+program.option("--rpc <Rpc>", "Rpc Server URL");
+program.option("--startNum <Num>", "start block", 0);
+program.option("--endNum <Num>", "end block", 0);
+program.parse(process.argv);
+
+const provider = new ethers.JsonRpcProvider(program.rpc);
+const main = async () => {
+    var startBlock = parseInt(program.startNum)
+    var endBlock = parseInt(program.endNum)
+    if (isNaN(endBlock) || isNaN(startBlock) || startBlock == 0) {
+        console.error("invalid input, --startNum", program.startNum, "--end", program.endNum)
+        return
+    }
+    // if --endNum is not specified, set it to the latest block number.
+    if (endBlock == 0) {
+        endBlock = await provider.getBlockNumber();
+    }
+    if (startBlock > endBlock) {
+        console.error("invalid input, startBlock:",startBlock, " endBlock:", endBlock);
+        return
+    }
+
+    for (let i = startBlock; i <= endBlock; i++) {
+        let blockData = await provider.getBlock(i);
+        console.log("startBlock:",startBlock, "endBlock:", endBlock, "curBlock", i, "blobGasUsed", blockData.blobGasUsed);
+        if (blockData.blobGasUsed == 0) {
+            continue
+        }
+        for  (let txIndex = 0; txIndex<= blockData.transactions.length - 1; txIndex++) {
+            let txHash = blockData.transactions[txIndex]
+            let txData =  await provider.getTransaction(txHash);
+            if (txData.type == 3) {
+                console.log("BlobTx in block:",i, " txIndex:", txIndex, " txHash:", txHash);
+            }
+        }
+    }
+};
+main().then(() => process.exit(0))
+    .catch((error) => {
+        console.error(error);
+        process.exit(1);
+    });