import type { Strategy, StrategyContext, StrategyAction, EnrichedSnapshot } from "../strategy-types.js";
/**
 * Aggressive taker strategy.
 * Crosses spread with directional bias from EMA crossover signals.
 * - Short EMA cross above long EMA = buy (bullish).
 * - Short EMA cross below long EMA = sell (bearish).
 * Size modulation: larger in strong trend, smaller in weak.
 */
export declare class AggressiveTakerStrategy implements Strategy {
    readonly name = "aggressive-taker";
    private _config;
    describe(): {
        description: string;
        params: ({
            name: string;
            type: "number";
            required: boolean;
            default: number;
            description: string;
        } | {
            name: string;
            type: "number";
            required: boolean;
            description: string;
            default?: undefined;
        })[];
    };
    private get shortEmaPeriod();
    private get longEmaPeriod();
    private get baseSize();
    private get maxSize();
    private get minSignalStrength();
    init(ctx: StrategyContext, _snapshot: EnrichedSnapshot): Promise<void>;
    onTick(ctx: StrategyContext, snapshot: EnrichedSnapshot): Promise<StrategyAction[]>;
    onStop(ctx: StrategyContext): Promise<StrategyAction[]>;
}