FeDirect/static/dom.mts

// I would've LOVED to use generics for this but unfortunately that's not possible.
// Type safety, but at what cost... >~< thanks TypeScript

export function findDialogOrFail(on: Element, selector: string): HTMLDialogElement {
    const element = on.querySelector(selector);
    if (!(element instanceof HTMLDialogElement))
        throw new Error(`${selector} isn't a dialog`);
    return element;
}

export function findFormOrFail(on: Element, selector: string): HTMLFormElement {
    const element = on.querySelector(selector);
    if (!(element instanceof HTMLFormElement))
        throw new Error(`${selector} isn't a form`);
    return element;
}

export function findInputOrFail(on: Element, selector: string): HTMLInputElement {
    const element = on.querySelector(selector);
    if (!(element instanceof HTMLInputElement))
        throw new Error(`${selector} isn't an input`);
    return element;
}

export function findButtonOrFail(on: Element, selector: string): HTMLButtonElement {
    const element = on.querySelector(selector);
    if (!(element instanceof HTMLButtonElement))
        throw new Error(`${selector} isn't a button`);
    return element;
}

export function findSelectOrFail(on: Element, selector: string): HTMLSelectElement {
    const element = on.querySelector(selector);
    if (!(element instanceof HTMLSelectElement))
        throw new Error(`${selector} isn't a select`);
    return element;
}

export function findImageOrFail(on: Element, selector: string): HTMLImageElement {
    const element = on.querySelector(selector);
    if (!(element instanceof HTMLImageElement))
        throw new Error(`${selector} isn't an image`);
    return element;
}