import type { ASIData, NumericMetricMap } from "@oh-my-pi/pi-tui/tools/autoresearch";
export declare const METRIC_LINE_PREFIX = "METRIC";
export declare const ASI_LINE_PREFIX = "ASI";
export declare const EXPERIMENT_MAX_LINES = 10;
export declare const EXPERIMENT_MAX_BYTES: number;
/**
 * Streaming equivalent of {@link parseMetricLines} + {@link parseAsiLines}: feed output
 * chunks with {@link append}, then {@link finish}. Only the unfinished trailing line (or a
 * prefix line still awaiting its `name=value` continuation) is buffered, so memory stays
 * O(line) instead of O(output) while yielding the same results as parsing the full text.
 */
export declare class ExperimentOutputScanner {
    #private;
    append(chunk: string): void;
    finish(): {
        metrics: Map<string, number>;
        asi: ASIData | null;
    };
}
export declare function parseMetricLines(output: string): Map<string, number>;
export declare function parseAsiLines(output: string): ASIData | null;
export declare function mergeAsi(base: ASIData | null, override: ASIData | undefined): ASIData | undefined;
export declare function killTree(pid: number, signal?: NodeJS.Signals | number): void;
export declare function inferMetricUnitFromName(name: string): string;
export declare function normalizePathSpec(value: string): string;
export declare function pathMatchesSpec(pathValue: string, specValue: string): boolean;
export declare function dedupeStrings(values: readonly string[]): string[];
export declare function ensureNumericMetricMap(value: NumericMetricMap | undefined): NumericMetricMap;
export declare function sanitizeAsi(value: {
    [key: string]: unknown;
} | undefined): ASIData | undefined;
export declare function tryGitStatus(cwd: string): Promise<string>;
export declare function tryGitPrefix(cwd: string): Promise<string>;