@needle-tools/engine/lib/engine/engine_typestore.js

Needle Engine is a web-based runtime for 3D apps. It runs on your machine for development with great integrations into editors like Unity or Blender - and can be deployed onto any device! It is flexible, extensible and networking and XR are built-in.

import { getParam } from "./engine_utils.js";
const debug = getParam("debugtypes");
class _TypeStore {
    _types = new Map();
    constructor() {
        if (debug)
            console.warn("TypeStore: Created", this);
    }
    /**
     * add a type to the store
     */
    add(key, type) {
        if (debug)
            console.warn("ADD TYPE", key);
        const existing = this._types.get(key);
        if (!existing)
            this._types.set(key, type);
        else {
            if (debug) {
                if (existing !== type) {
                    console.warn("Type name exists multiple times in your project and may lead to runtime errors:", key);
                }
            }
        }
    }
    /**
     * @returns the type for the given key if registered
     */
    get(key) {
        return this._types.get(key) || null;
    }
    /**
     * @returns the key/name for the given type if registered
     */
    getKey(type) {
        for (const [key, value] of this._types) {
            if (value === type)
                return key;
        }
        return null;
    }
}
export const $BuiltInTypeFlag = Symbol("BuiltInType");
export const TypeStore = new _TypeStore();
/**
 * add to a class declaration to automatically register it to the TypeStore (required for HMR right now)
 *
 * `@registerType`
 *
 * `export class MyType extends Behaviour { ... }`
 */
export const registerType = function (constructor) {
    if (!TypeStore.get(constructor.name))
        TypeStore.add(constructor.name, constructor);
};
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