What is the solution to fixing the error message "module does not have any exported members"?

Despite following instructions provided in this particular answer, I am struggling to get the solution to work as intended.

Summary

My objective is to utilize import { Type } from "Module" instead of

/// <reference path="..." />

Layout

-app\
  -ViewModel.ts
  -Program.ts

ViewModel.ts

export module Demo {
    export class ViewModel {
        constructor(public test: string) {
        }
    }
}

Program.ts

import { ViewModel } from "ViewModel";

The module 'C:/DemoApp/app/ViewModel' does not have a exported member named 'ViewModel'.

Furthermore...

Only 'amd' and 'system' modules can be used alongside --outFile.

Objective

My goal is to effectively reference dependencies so that they compile into a single file sequentially.


Even after adding "module": "system", the initial error persists.

In line with the first solution, I wish to retain namespaces without any compromise.

Answer №1

Eliminate the following line from your statement

export module Demo

instead, utilize it like this

export class ViewModel {
    constructor(public test: string) {
    }
}

Update: To handle namespace, simply implement something along the lines of

namespace Demo {
  export class ViewModel {
        constructor(public test: string) {
        }
    }
}

Answer №2

A common cause could be a typographical error.

The function export const Demo = () => {} cannot be exported unless it returns a value.

On the other hand, export const Demo =()=> () can be exported even without a return statement.

Answer №3

Could be worth verifying the module currently in use.

const greet = () => {
   console.log("Greetings!");
}

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