import { Signal, WritableSignal } from "@angular/core";
import { TArrayDiffs2Result } from "@simplysm/sd-core-common";
export declare function $arr<T>(sig: Signal<T[]> | WritableSignal<T[]>): {
    insert(i: number, item: T): void;
    remove(itemOrFn: T | ((item: T, i: number) => boolean)): void;
    toggle(value: T): void;
    snapshot(keyPropNameOrFn: keyof T | ((item: T) => any)): void;
    changed(item: T): boolean;
    diffs(options?: {
        includeSame?: boolean;
        excludes?: string[];
        includes?: string[];
    }): TArrayDiffs2Result<T>[];
    readonly origin: Map<any, T>;
};