您需要改用connect方法。
从你的截图中，@deprecated注解告诉你“使用静态sdk级别的连接方法”。实际上，它看起来像这样：

import {
  Cluster,
  connect,
  ConnectOptions
} from 'couchbase'

const clusterConnStr: string =
    'couchbases://yourConnectionString'
  const username: string = 'username'
  const password: string = 'Password!123'
  const bucketName: string = 'travel-sample'

  const connectOptions: ConnectOptions = {
    username: username,
    password: password,
    // Sets a pre-configured profile called "wanDevelopment" to help avoid latency issues
    // when accessing Capella from a different Wide Area Network
    // or Availability Zone (e.g. your laptop).
    configProfile: 'wanDevelopment'
  }

  const cluster: Cluster = await connect(clusterConnStr, connectOptions)