angular - 如何在 Angular 应用程序中使用 WalletConnect？

Question

问题:我正在尝试使用 WalletConnect 在我的 Angular 应用程序中连接 MetaMask 钱包。我有以下代码来连接钱包。一切正常，直到下面代码中的这一行:await connector.createSession();

有没有人用 angular 实现 WalletConnect 并遇到这个问题？

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 WalletConnect 文档中的代码:

// 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

首先，使用 npm npm install buffer 安装缓冲区，然后在 polyfills.ts 文件末尾添加此代码:

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