/**
 * `@lit/task` controllers on a live element, read without importing the
 * library: the inspector shows them, the timeline's lifecycle layer reports
 * the ones that fail.
 */
import { type Dict } from './live-reads.js';
export declare const TASK_ERROR: number;
/** The `TaskStatus` name for a status number, or the number itself. */
export declare const taskStatusName: (status: number) => string;
/** `@lit/task` duck type: a controller with a numeric status, run() and render(). */
export declare const taskStatus: (v: Dict) => number | undefined;
/**
 * Every `@lit/task` controller the element holds, with the field it is stored
 * in (else its class name). Read-only and never throws, so the lifecycle layer
 * can call it on recorded updates.
 */
export declare const tasksOf: (el: Element) => Array<{
    task: object;
    name: string;
}>;
/**
 * Every `@lit/task` controller the element holds that is currently in its
 * error state, named as by {@link tasksOf}. Read-only and never throws, so the
 * lifecycle layer can call it after each update.
 */
export declare const erroredTasks: (el: Element) => Array<{
    task: object;
    name: string;
    error: unknown;
}>;
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