import { BaseIndicatorInput, BaseIndicator } from "../base-indicator";
export declare class CrossDownInput extends BaseIndicatorInput {
    sourceSeries: number[];
    referenceSeries: number[];
    constructor(sourceSeries: number[], referenceSeries: number[]);
}
export declare class CrossDownNext {
    sourceValue: number;
    referenceValue: number;
}
export declare class CrossDown extends BaseIndicator {
    sourceSeries: number[];
    referenceSeries: number[];
    result: boolean[];
    generator: Generator<boolean | undefined, boolean | undefined, CrossDownNext>;
    constructor(input: CrossDownInput);
    static calculate: typeof crossDown;
    static reverseInputs(input: CrossDownInput): void;
    nextValue(next: CrossDownNext): boolean | undefined;
}
export declare function crossDown(input: CrossDownInput): boolean[];