typescript - 如何从 Typescript 模块内部的子命名空间导入单个类型、类、常量或枚举？

Question

我正在使用 Google Cloud Platform 和 Typescript。
我正在处理一些应该实现特定 GPC 类型的代码和变量。喜欢:

import { protos } from "@google-cloud/aiplatform";

class myClass {
  public async getModelById(id: string): Promise<protos.google.cloud.aiplatform.v1beta1.IModel>
  { /* ... */ }

  public async getTrainingPipelineById(id: string): Promise<protos.google.cloud.aiplatform.v1beta1.ITrainingPipeline>
  { /* ... */ }
}

我只想导入 类型 , 类(class) 和 枚举 我想使用，例如

import { IModel, ITrainingPipeline } from "@google-cloud/aiplatform".protos.google.cloud.aiplatform.v1beta1 ;
// I know that the code above does not works, but you got the idea


class myClass {
  public async getModelById(id: string): Promise<IModel>
  { /* ... */ }

  public async getTrainingPipelineById(id: string): Promise<ITrainingPipeline>
  { /* ... */ }
}

如何从模块内部的子命名空间导入单个类型、类或枚举？

Answer 1

总之，you can't do that .
从链接总结:即使语法看起来相似，导入命名导入与解构对象不同，因此您不能像解构那样嵌套它。您将不得不使用两个语句:

import { protos } from "@google-cloud/aiplatform";
let {google: {cloud: {aiplatform: {v1beta1: {IModel, ITrainingPipeline}}}}} = protos;

// or, perhaps more readably
let {IModel, ITrainingPipeline} = protos.google.cloud.aiplatform.v1beta1;

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