在Ionic 4中导入Ionic-Native File插件

Question

I am attempting to use the ionic native file plugin , but am receiving an error when attempting to run the app after installation

Partial app.module.ts file:

    ...
    import { File } from '@ionic-native/file';
    ...

    @NgModule({
      declarations: [AppComponent],
      entryComponents: [],
      imports: [
        ...
      ],
      providers: [
        ...
        File
      ],
      bootstrap: [AppComponent]
    })
    export class AppModule {}

Error in console is

Uncaught TypeError: Object(...) is not a function https://i.imgur.com/24eLViO.png

Answer 1

install

ionic cordova plugin add cordova-plugin-file
npm install @ionic-native/file --save

import app.module.ts like this

import { File } from "@ionic-native/file/ngx";

providers: [
    File
]