@google-cloud/pubsubをTypeScriptで使おうとしたらエラー

@google-cloud/pubsub": "^1.7.2"を使い、tscしたところ下記のエラーが出た。

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node_modules/@grpc/grpc-js/build/src/call.d.ts:68:5 - error TS2416: Property '_write' in type 'ClientWritableStreamImpl<RequestType>' is not assignable to the same property in base type 'Writable'.
  Type '(chunk: RequestType, encoding: string, cb: WriteCallback) => void' is not assignable to type '(chunk: any, encoding: string, callback: (err?: Error | undefined) => void) => void'.
    Types of parameters 'cb' and 'callback' are incompatible.
      Types of parameters 'err' and 'error' are incompatible.
        Type 'Error | null | undefined' is not assignable to type 'Error | undefined'.
          Type 'null' is not assignable to type 'Error | undefined'.

68     _write(chunk: RequestType, encoding: string, cb: WriteCallback): void;
       ~~~~~~

node_modules/@grpc/grpc-js/build/src/call.d.ts:79:5 - error TS2416: Property '_write' in type 'ClientDuplexStreamImpl<RequestType, ResponseType>' is not assignable to the same property in base type 'Duplex'.
  Type '(chunk: RequestType, encoding: string, cb: WriteCallback) => void' is not assignable to type '(chunk: any, encoding: string, callback: (err?: Error | undefined) => void) => void'.
    Types of parameters 'cb' and 'callback' are incompatible.
      Types of parameters 'err' and 'error' are incompatible.
        Type 'Error | null | undefined' is not assignable to type 'Error | undefined'.
          Type 'null' is not assignable to type 'Error | undefined'.

79     _write(chunk: RequestType, encoding: string, cb: WriteCallback): void;

バージョンを確認した所、1.7.2が新しめだったので1.6.0に戻し、念の為node_modulesを削除して再インストールしたところ問題なくコンパイルできた。
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package.json

"dependencies": {
    "@google-cloud/pubsub": "^1.6.0",

2系がもう少しで出るらしいので、バタバタしてるのかな。