Property 'storage' does not exist on type 'Navigator'

问题

I'm trying to get the quota storage information from an Angular2 component with this command line:

navigator.storage.estimate().then((data) => console.log(data));

The command works properly in a pure Javascript script but it doesn't get compiled in Angular2/Typescript.

Can you help me?

Thanks

回答1:

I had the same problem and I couldn't find any available @types for the StorageManager interface.

My temporary solutions was to manually declare it in my code.

declare global {
  interface StorageEstimate {
    quota: number;
    usage: number;
  }
  interface Navigator {
    storage: {
      estimate: () => Promise<StorageEstimate>;
      persist: () => boolean;
      persisted: () => boolean;
    };
  }
}

回答2:

what is navigator ? I guess it is a global variable on window without any type, so you should add a typing entry for this

https://github.com/typings/typings

来源：https://stackoverflow.com/questions/46957270/property-storage-does-not-exist-on-type-navigator