import { type RunRow } from "./rows.js";
import type { Source } from "./sources.js";
export type LoaderProgress = {
    kind: "progress";
    phase: "summary";
    completed: number;
    total: number;
};
export type LoaderEvent = LoaderProgress
/** `row` is a snapshot of the loader's live row. */
 | {
    kind: "upsert";
    row: RunRow;
} | {
    kind: "done";
    rows: RunRow[];
};
export type RunsLoader = {
    /** Perform one bounded unit of work; returns the events it caused. */
    advance(): LoaderEvent[];
    isDone(): boolean;
};
export declare function createRunsLoader(sources: Source[]): RunsLoader;
/** Drain a loader synchronously. The only completion path CSV export
 *  uses, so interactive and CSV derivation cannot drift. */
export declare function loadAllRuns(sources: Source[]): RunRow[];