import type { Bar } from '../../api/types';
export declare class BarBuffer {
    private data;
    private _length;
    get length(): number;
    get capacity(): number;
    constructor(capacity?: number);
    /** Set from Bar array — replaces all data */
    setFromBars(bars: Bar[]): void;
    /** Get a Bar object at index (allocates — use field accessors in hot paths) */
    getBar(index: number): Bar | undefined;
    time(index: number): number;
    open(index: number): number;
    high(index: number): number;
    low(index: number): number;
    close(index: number): number;
    volume(index: number): number;
    /** Append a bar at the end */
    push(bar: Bar): void;
    /** Update bar at index in place (zero allocation) */
    updateAt(index: number, bar: Bar): void;
    /** Get price range (min low, max high) for index range [from, to) */
    getPriceRange(from: number, to: number): {
        min: number;
        max: number;
    } | null;
    /** Get max volume in range [from, to) */
    getMaxVolume(from: number, to: number): number;
    /** Binary search for nearest index to a timestamp */
    nearestIndex(time: number): number;
    /** Prepend bars (for scroll-back history loading) */
    prepend(bars: Bar[]): void;
    /** Get slice as Bar array */
    getRange(from: number, to: number): Bar[];
    private ensureCapacity;
}