import { SignalScope } from './contexts.js';
export declare class Callback<T extends Function = Function> {
    scope: SignalScope;
    deps: unknown[] | undefined;
    _callbacks: Callback[] | undefined;
    fn: T;
    constructor(fn: T, scope: SignalScope, deps?: unknown[]);
    get callbacks(): Callback<Function>[];
    setFn(fn: T): void;
}
export declare function createCallback<T extends Function>(fn: T, scope: SignalScope, deps?: unknown[] | undefined): Callback<T>;
export declare function callback<T extends Function>(fn: T, idx: number, deps?: unknown[] | undefined): T;
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