Running compiled TypeScript in the web browser will not execute properly

While my TypeScript code compiles correctly, I have encountered a problem with my class structure that results in unexpected behavior and runtime errors.

The specific issue causing the error is

this.Scene = new THREE.Scene();

After running tsc, the line changes to

this.Scene = new three_1.default.Scene();

To resolve this, I can remove the default parameter, but doing so every time doesn't seem like the best approach. I'd like to understand the root cause of the issue. Below are the classes I am using for context if the structure might be related to the problem. Apologies in advance, as I am still learning TypeScript (and only started JavaScript a week ago, although I do have experience with .NET)

import { MaterialLibrary } from "./Materials/MaterialLibrary";
import { MeshLoader } from "./MeshLoader";
import THREE from "three";

export class Manager
{
    //manager instance
    private static instance: Manager;

    //sub-managers
    public static MaterialLib: MaterialLibrary;
    public static Scene: THREE.Scene;

    //helper classes
    public static MeshLoader: MeshLoader;

    constructor()
    {
        Manager.instance = this;
    }

    static Init()
    {
        this.MaterialLib = new MaterialLibrary();
        this.MeshLoader = new MeshLoader();
        this.Scene = new THREE.Scene();
    }

    static GetInstance(): Manager
    {
        if(!Manager.instance)
        {
            Manager.instance = new Manager();
        }

        return Manager.instance;
    }
}

This code snippet compiles to

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const MaterialLibrary_1 = require("./Materials/MaterialLibrary");
const MeshLoader_1 = require("./MeshLoader");
const three_1 = __importDefault(require("three"));
class Manager {
    constructor() {
        Manager.instance = this;
    }
    static Init() {
        this.MaterialLib = new MaterialLibrary_1.MaterialLibrary();
        this.MeshLoader = new MeshLoader_1.MeshLoader();
        this.Scene = new three_1.default.Scene();
    }
    static GetInstance() {
        if (!Manager.instance) {
            Manager.instance = new Manager();
        }
        return Manager.instance;
    }
}
exports.Manager = Manager;

Answer №1

Consider utilizing

import * as THREE from 'three';

in place of

import THREE from 'three';

reference:

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