如何使用WalletConnect与角应用程序？

Question

问题：，我正在尝试使用WalletConnect连接我的角度应用程序中的MetaMask钱包。我有下面的代码来连接钱包。在下面代码中的这一行代码之前，一切都运行良好：await connector.createSession();

有没有人用角度来实现WalletConnect并面对这个问题？

错误：

ERROR Error: Uncaught (in promise): ReferenceError: Buffer is not defined
ReferenceError: Buffer is not defined
    at typedarrayToBuffer (vendor.js:82628:15)
    at arrayToBuffer (vendor.js:61701:71)
    at Module.arrayToHex (vendor.js:61704:24)
    at generateRandomBytes32 (vendor.js:64322:63)
    at vendor.js:56407:96
    at Generator.next (<anonymous>)
    at asyncGeneratorStep (vendor.js:167002:24)
    at _next (vendor.js:167024:9)
    at ZoneDelegate.invoke (polyfills.js:4680:26)
    at Object.onInvoke (vendor.js:137134:25)
    at resolvePromise (polyfills.js:5521:31)
    at resolvePromise (polyfills.js:5475:17)
    at polyfills.js:5587:17
    at ZoneDelegate.invokeTask (polyfills.js:4714:31)
    at Object.onInvokeTask (vendor.js:137122:25)
    at ZoneDelegate.invokeTask (polyfills.js:4713:60)
    at Zone.runTask (polyfills.js:4486:47)
    at drainMicroTaskQueue (polyfills.js:4890:35)
    at ZoneTask.invokeTask [as invoke] (polyfills.js:4799:21)
    at invokeTask (polyfills.js:5908:14)

使用来自文档的WalletConnect代码：

// Create a connector
    const connector = new WalletConnect({
      bridge: "https://bridge.walletconnect.org", // Required
      qrcodeModal: QRCodeModal,
    });

    // Subscribe to connection events
    connector.on("connect", (error, payload) => {
      if (error) {
        throw error;
      }

      // Get provided accounts and chainId
      const { accounts, chainId } = payload.params[0];
    });

    connector.on("session_update", (error, payload) => {
      if (error) {
        throw error;
      }

      // Get updated accounts and chainId
      const { accounts, chainId } = payload.params[0];
    });

    connector.on("disconnect", (error, payload) => {
      if (error) {
        throw error;
      }

      // Delete connector
    });

    // Check if connection is already established
    if (!connector.connected) {
      // create new session
      await connector.createSession();
    }

Answer 1

除了@houmn.sanati的答案之外，我还需要做一些额外的步骤。

以下是我为解决这一问题所采取的所有步骤：

npm install buffer

• Add

{
  ...
  "compilerOptions": {
    ...
    "types": [
      "node"
    ]
  },
  "angularCompilerOptions": {
    ...
  }
}

• (可选:只有当您遇到preact包的问题时)在package.json文件

中添加对preact包的重写

"overrides": {
    "preact@10.4.1": {
      "preact": "10.0.5"
    }
  }

Answer 2

首先，使用npm npm install buffer安装缓冲区，然后在polyfills.ts文件的末尾添加以下代码：

(window as any)['global'] = window;
global.Buffer = global.Buffer || require('buffer').Buffer;