/**
 * Fisher Transform Indicator
 *
 * Converts prices into a Gaussian normal distribution, making
 * turning points easier to identify.
 *
 * Based on TradingView's Fisher Transform indicator.
 */
import type { Bar, InputConfig, PlotConfig, HLineConfig } from 'oakscriptjs';
export interface FisherTransformInputs {
    /** Lookback period for highest/lowest calculation */
    length: number;
}
export declare const defaultInputs: FisherTransformInputs;
export declare const inputConfig: InputConfig[];
export declare const plotConfig: PlotConfig[];
export declare const hlineConfig: HLineConfig[];
export declare const metadata: {
    title: string;
    shortTitle: string;
    overlay: boolean;
};
/**
 * Calculate Fisher Transform
 *
 * Algorithm:
 * 1. Calculate hl2 (midpoint of high and low)
 * 2. Normalize to range [-1, 1] using highest/lowest over length
 * 3. Apply smoothing with previous value
 * 4. Apply Fisher Transform: 0.5 * ln((1+x)/(1-x))
 */
export declare function calculate(bars: Bar[], inputs?: Partial<FisherTransformInputs>): ReturnType<typeof import('../index.js').SMA.calculate>;
export declare const FisherTransform: {
    calculate: typeof calculate;
    metadata: {
        title: string;
        shortTitle: string;
        overlay: boolean;
    };
    defaultInputs: FisherTransformInputs;
    inputConfig: InputConfig[];
    plotConfig: PlotConfig[];
    hlineConfig: HLineConfig[];
};
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