From 4aa6e2c1c5361231905fc860caaa91e11d20abfc Mon Sep 17 00:00:00 2001
From: zzphust <1255950918@qq.com>
Date: Tue, 5 Dec 2023 17:04:59 +0800
Subject: [PATCH] cmd/jsutils: add a tool for validator version

---
 cmd/jsutils/README.md              | 16 ++++++++++++++++
 cmd/jsutils/getvalidatorversion.js | 19 +++++++++++++++++++
 cmd/jsutils/package.json           | 14 ++++++++++++++
 3 files changed, 49 insertions(+)
 create mode 100644 cmd/jsutils/README.md
 create mode 100644 cmd/jsutils/getvalidatorversion.js
 create mode 100644 cmd/jsutils/package.json

diff --git a/cmd/jsutils/README.md b/cmd/jsutils/README.md
new file mode 100644
index 0000000000..1043f6c658
--- /dev/null
+++ b/cmd/jsutils/README.md
@@ -0,0 +1,16 @@
+## Requirement
+
+- nodejs: v20.10.0
+- npm: v10.2.3
+
+## Prepare
+Recommend use [nvm](https://github.com/nvm-sh/nvm) to manage node version.
+
+Install node.js dependency:
+```shell script
+    npm install
+```
+## Run
+```bash
+    npm run start
+```
\ No newline at end of file
diff --git a/cmd/jsutils/getvalidatorversion.js b/cmd/jsutils/getvalidatorversion.js
new file mode 100644
index 0000000000..408d2e2a8d
--- /dev/null
+++ b/cmd/jsutils/getvalidatorversion.js
@@ -0,0 +1,19 @@
+import { ethers } from "ethers";
+const testNet = "https://bsc-prebsc-dataseed.bnbchain.org"
+const mainNet = "https://bsc-dataseed.bnbchain.org"
+const provider = new ethers.JsonRpcProvider(mainNet);
+const valNum = 21;
+
+const main = async () => {
+    const blockNum = await provider.getBlockNumber();
+    console.log(blockNum);
+    for (let i = 0; i < valNum; i++) {
+        let blockData = await provider.getBlock(blockNum - i);
+        console.log(blockData.miner);
+        let major = ethers.toNumber(ethers.dataSlice(blockData.extraData, 2, 3))
+        let minor = ethers.toNumber(ethers.dataSlice(blockData.extraData, 3, 4))
+        let patch = ethers.toNumber(ethers.dataSlice(blockData.extraData, 4, 5))
+        console.log("version = ", major, ".", minor, ".", patch)
+    }
+};
+main();
\ No newline at end of file
diff --git a/cmd/jsutils/package.json b/cmd/jsutils/package.json
new file mode 100644
index 0000000000..bf94abd27f
--- /dev/null
+++ b/cmd/jsutils/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "jsutils",
+  "version": "1.0.0",
+  "type": "module",
+  "description": "jsUtils for bsc",
+  "main": "index.js",
+  "scripts": {
+    "start": "node getvalidatorversion.js"
+  },
+  "dependencies": {
+    "ethers": "^6.2.3"
+  },
+  "author": "BNB Chain"
+}