我正在试着让这个工作的JavaScript（但不是我的：P）通过类型检查。也许这只是在一天晚了，但我可以使用一些帮助。

class GPUTexture {}

class BaseState<T> {
    webgpuObject: T | null;

    constructor() {
        this.webgpuObject = null;
    }
}

class TextureState extends BaseState<GPUTexture> {}

interface CaptureStateBase<GPUType> {
    webgpuObject: GPUType | null;
}

class ObjectRegistry<GPUType extends Object, CaptureState extends CaptureStateBase<GPUType>> {
    iterating: boolean;
    dataMap: WeakMap<GPUType, CaptureState>;
    objects: WeakRef<GPUType>[];

    constructor() {
        this.dataMap = new WeakMap();
        this.objects = [];
        this.iterating = false;
    }

    add(obj: GPUType, data: CaptureState) {
        if (this.iterating) {
            throw new Error('Mutating Registry while iterating it.');
        }

        this.dataMap.set(obj, data);
        this.objects.push(new WeakRef(obj));
        data.webgpuObject = obj;
    }

    get(obj: GPUType) {
        return this.dataMap.get(obj);
    }

    [Symbol.iterator](): IterableIterator<CaptureState> {
        let i = 0;
        this.iterating = true;

        return {
            registry: this,
            next() {
                while (i < this.registry.objects.length) {
                    const obj = this.registry.objects[i++].deref();
                    if (obj === undefined) {
                        continue;
                    }
                    return { value: this.registry.get(obj), done: false };
                }
                this.registry.iterating = false;
                return { done: true };
            },
        };
    }
}

const textures = new ObjectRegistry<GPUTexture, TextureState>();

我尝试简化代码，但我不确定我是否理解错误。我实际上看到了两个错误。一个是，typescript似乎混淆了next中的this。我抱怨this.registry不存在
另一个是
（方法）迭代器〈捕获状态，任意，未定义〉. next（...参数：[]| [未定义]）：迭代器结果〈捕获状态，任意〉
类型'（）=〉{值：任何;完成：错误;}| {完成：真;值？：未定义; "}"不能赋给类型"（...参数：[]| [未定义]）=〉迭代器结果〈捕获状态，任意〉'。
类型"{值：任何;完成：错误;}| {完成：真;值？：未定义; }"不能赋给类型" IteratorResult〈CaptureState，any〉"。
键入"{完成：真;值？：无法将"未定义;}"赋给类型"IteratorResult〈CaptureState，any〉"。
键入"{完成：真;值？：未定义;"}"不能赋给类型" IteratorReturnResult "。
属性"value"在类型"{done：真;值？：未定义;}"，但在类型" IteratorReturnResult "中是必需的。（2322）
打字场
我试图通过像这样向上移动next来修复第一个问题

class GPUTexture {}

class BaseState<T> {
    webgpuObject: T | null;

    constructor() {
        this.webgpuObject = null;
    }
}

class TextureState extends BaseState<GPUTexture> {}

interface CaptureStateBase<GPUType> {
    webgpuObject: GPUType | null;
}

class ObjectRegistry<GPUType extends Object, CaptureState extends CaptureStateBase<GPUType>> {
    iterating: boolean;
    dataMap: WeakMap<GPUType, CaptureState>;
    objects: WeakRef<GPUType>[];

    constructor() {
        this.dataMap = new WeakMap();
        this.objects = [];
        this.iterating = false;
    }

    add(obj: GPUType, data: CaptureState) {
        if (this.iterating) {
            throw new Error('Mutating Registry while iterating it.');
        }

        this.dataMap.set(obj, data);
        this.objects.push(new WeakRef(obj));
        data.webgpuObject = obj;
    }

    get(obj: GPUType) {
        return this.dataMap.get(obj);
    }

    [Symbol.iterator](): IterableIterator<CaptureState> {
        let i = 0;
        this.iterating = true;

        const next = () => {
            while (i < this.objects.length) {
                const obj = this.objects[i++].deref();
                if (obj === undefined) {
                    continue;
                }
                return { value: this.get(obj), done: false };
            }
            this.iterating = false;
            return { done: true };
        };

        return { next };
    }
}

const textures = new ObjectRegistry<GPUTexture, TextureState>();

打字场
这解决了第一个错误，但没有解决第二个错误