import type { Plugin } from "@segment/analytics-next";
import { Signal } from "@segment/analytics-signals-runtime";
import { Signals } from "../core/signals";
import { AnyAnalytics, SignalsPluginSettingsConfig } from "../types";
export type OnSignalCb = (signal: Signal) => void;
interface SignalsAugmentedFunctionality {
    stop(): void;
    /**
     * Listen to signals
     */
    onSignal: (fn: OnSignalCb) => this;
    /**
     * Emit/add a custom signal of type 'userDefined'
     */
    addSignal(userDefinedData: Record<string, unknown>): this;
}
export declare class SignalsPlugin implements Plugin, SignalsAugmentedFunctionality {
    readonly type = "utility";
    readonly name = "SignalsPlugin";
    readonly version = "2.1.0";
    signals: Signals;
    constructor(settings?: SignalsPluginSettingsConfig);
    isLoaded(): boolean;
    load(_ctx: unknown, analytics: AnyAnalytics): Promise<void>;
    stop(): void;
    onSignal(cb: (signal: Signal) => void): this;
    addSignal(data: Record<string, unknown>): this;
    /**
     * Enable redaction and disable ingestion of signals. Also, logs signals to the console.
     */
    debug(...args: Parameters<(typeof this.signals)["debug"]>): this;
}
export {};
//# sourceMappingURL=signals-plugin.d.ts.map