import { ProviderToken } from '@angular/core';
import { Observable } from 'rxjs';
import { Logger } from '../angular-terminal/logger';
export type TODO = any;
/**
 * @example
 * TODO: use Assert.ts instead
 * assert(false, "throw this error message")
 * assert(true, "nothing happens")
 * @deprecated
 */
export declare function assert(condition?: any, message?: any): void;
/**
 * Stops the execution and opens the debugger.
 */
export declare function assertDebug(condition?: any): void;
export declare const filterNulls: import("rxjs").MonoTypeOperatorFunction<any>;
export declare function longest(array: any): any;
export declare function moveToLast(array: any, item: any): any;
export declare function removeLastMatch(array: any, item: any): any;
export declare function remove<T>(array: Array<T>, item: T): T[];
export declare function last(array: any): any;
/**
 * Loop over an object [key,value] and the key or the value.
 * Creates a new object.
 * If `undefined` is returned, the key is removed from the object.
 */
export declare function mapKeyValue(object: any, func: (key: any, value: any) => [key: string, value: any] | undefined): {};
export interface AnyObject {
    [prop: string]: any;
}
/**
 * Waits for an observable to become "truthy"
 * @example await waitFor(observable)
 */
export declare function waitFor(observable: Observable<any>): Promise<any>;
/**
 * Listens for changes on a property and exposes it as a Signal.
 * Replaces the property with a getter/setter so it can detect changes.
 *
 * Example: listens for a property `text` and creates an Signal `$text`.
 * ```ts
 * this.text = 'blabla'
 * this.$text = new BehaviorSubject(null)
 * inputToSignal(this, 'text', '$text')
 * ```
 */
export declare function inputToSignal<T, K extends keyof T>(_component: T, key: K, signalKey: K): void;
export type InjectFunction = <T>(token: ProviderToken<T>) => T;
export declare function async<T>(func: (...args: any[]) => T): Promise<T>;
export declare function detectInfiniteLoop(nb?: number): void;
export declare function stringifyReplacer({ depth }?: {
    depth?: number;
}): (key: any, value: any) => any;
export declare function removeFromArray(array: any, item: any): any[];
export declare function logError(logger: Logger, thing: any): void;
export declare function unwrapIfSignal(value: any): any;
export declare function unwrapIfFunction(value: any): any;