Encountering a TS2307 error while trying to import external modules into a TypeScript file

I recently added a new module using npm and now I'm trying to use it in my typescript file.

npm install marker-animate-unobtrusive --save

import SlidingMarker = require('marker-animate-unobtrusive');

Unfortunately, when I try to access the module, I encounter this error:

//Error TS2307: Cannot find module 'marker-animate-unobtrusive'

After searching for a solution, I came across suggestions to adjust compiler options or create a d.ts file for Type Script to recognize the module. However, none of these methods have worked for me so far. I am utilizing Angular 2 and Ionic 2 in this project, in case that information is relevant.

If anyone can provide some guidance, I would greatly appreciate it!

angularjstypescriptangularionic-frameworkionic2

Answer №1

The issue arises from the fact that the SlidingMarker npm package does not currently have a defined type.

1) Define a generic type in typings/marker-animate-unobtrusive.d.ts:

declare module 'marker-animate-unobtrusive' {
  const x: any;
  export = x;
}

2) Include this file in the list of types in typings/main.d.ts (or typings/index.d.ts for newer typings):

/// <reference path="marker-animate-unobtrusive.d.ts"></reference>

3) Then, update your import statement as follows:

import * as SlidingMarker from 'marker-animate-unobtrusive';

Voila! Keep in mind that you may need to change any variables defined as "SlidingMarker" to "any" to prevent other TypeScript errors.

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