Trouble with importing typings in Angular 4 Component

Encountering a compilation error in a simple component due to a typing issue.

Component

import { Component, Input } from '@angular/core';
import { DriveItem } from '@microsoft/microsoft-graph-types';
import { getType, DriveItemType } from '../../helpers/graphItem.helper';

@Component({
    selector: 'app-selected-item',
    templateUrl: './selected-item.component.html',
    styleUrls: ['./selected-item.component.scss']
})
export class SelectedItemComponent {

    @Input() selectedItem: DriveItem;
    @Input() deselectItem: Function;

    constructor() { }

    itemType(item: DriveItem): DriveItemType {
        return getType(item);
    }
}

The issue is specifically with the DriveItem type. While it works fine in other parts of the project, it fails to resolve correctly in this particular component.

Error

ERROR in ./src/app/components/selected-item/selected-item.component.ts
Module not found: Error: Can't resolve '@microsoft/microsoft-graph-types' in '/Users/jack/repos/project/src/app/components/selected-item'
resolve '@microsoft/microsoft-graph-types' in '/Users/jack/repos/project/src/app/components/selected-item'
...
...

<p>Suspecting that adding a new directory called <code>components might be causing the issue, but not entirely sure.

Folder Structure

/src
    /app
        /components
            /selected-item
                - selected-item.component.ts <-- Facing resolution problem with DriveItem type here
        /helpers
            - graphItem.helper.ts <-- DriveItem type functioning properly here
        /pages
            /home
                - home.component.ts <-- DriveItem type also working fine here.

Tried fixing the issue by:

  • Upgrading to the latest Angular CLI version
  • Deleting node modules, clearing cache, and reinstalling
  • Experimenting with different import variations such as * as MicrosoftGraph versus using { DriveItem }
  • Temporarily removing types and utilizing any, as a workaround to the compilation failure when trying to use DriveItem.

Answer №1

Have you included the DriveItem import in your app module?

import { DriveItem } from '@microsoft/microsoft-graph-types';

// other imports 
@NgModule({
imports: [DriveItem],
...
})

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