import { type ItemTemplate, type KeyFn } from "lit-html/directives/repeat.js";
/** Explicit key: property name or key function. */
export type RenderKeyArg<T> = keyof T | KeyFn<T>;
/**
 * Render a list with lit-html `repeat` (keyed) or `map` (unkeyed).
 *
 * - Uses `repeat` when `key` is passed, or when items have an `id`.
 * - Otherwise uses `map`.
 */
export declare function renderList<T>(items: readonly T[], template: ItemTemplate<T>, key?: RenderKeyArg<T>): unknown;
/**
 * Render object entries with lit-html `repeat`, keyed by the object property key.
 */
export declare function renderObjectEntries<V>(obj: Record<string, V>, template: (value: V, key: string, index: number) => unknown): unknown;
declare global {
    interface Array<T> {
        /**
         * Renders items with lit-html `repeat` (keyed) or `map` (unkeyed).
         * Uses `repeat` when `key` is passed or items have an `id`.
         */
        render(template: ItemTemplate<T>, key?: RenderKeyArg<T>): unknown;
    }
    interface ReadonlyArray<T> {
        render(template: ItemTemplate<T>, key?: RenderKeyArg<T>): unknown;
    }
}
export type { ItemTemplate, KeyFn };
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