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 findOptionOrFail(on: Element, selector: string): HTMLOptionElement {
    const element = on.querySelector(selector);
    if (!(element instanceof HTMLOptionElement))
        throw new Error(`${selector} isn't an option`);
    return element;
}

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

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

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

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;
}