import EMA, { EMAArgs } from "../EMA";
import { JSONDef, Indicator, Close } from "../types";
export interface PPOArgs {
    fast: EMAArgs;
    slow: EMAArgs;
    signal: EMAArgs;
}
export interface PPOOut {
    ppo: number;
    signal: number;
    histogram: number;
}
export default class PPO extends Indicator<PPOArgs, PPOOut> {
    fast: EMA;
    slow: EMA;
    signal: EMA;
    constructor(fast?: number | EMA, slow?: number | EMA, signal?: number | EMA);
    next(value: number): PPOOut;
    nextBar(bar: Close): PPOOut;
    reset(): void;
    toString(): string;
    toJSON(): JSONDef<PPOArgs>;
    static readonly key = "finance.tr.PPO";
    static minBars({ fast, slow, signal }: PPOArgs): number;
    static display({ fast, slow, signal }: PPOArgs, value?: string): string;
    static from({ fast, slow, signal }: PPOArgs): PPO;
}