export type StdoutRendererWriteMode = "stream" | "sync" | "chunked";
export interface StdoutRendererMetrics {
    lastFrameAt: number;
    lastFrameBytes: number;
    lastWriteMs: number;
    writeEmaMs: number;
    writeMode: StdoutRendererWriteMode;
    fps: number;
    bytesPerSec: number;
    terminalGraphicsDraws: number;
    terminalGraphicsClears: number;
    terminalGraphicsBytes: number;
    terminalGraphicsActive: number;
}
export declare function getStdoutRendererMetrics(): StdoutRendererMetrics;
export declare function recordStdoutFrame(info: Readonly<{
    at: number;
    bytes: number;
    writeMs: number;
    writeEmaMs: number;
    writeMode: StdoutRendererWriteMode;
}>): void;
export declare function recordStdoutTerminalGraphics(info: Readonly<{
    draws?: number;
    clears?: number;
    bytes?: number;
    active: number;
}>): void;