/**
 * @copyright Sister Software.
 * @license AGPL-3.0
 * @author Teffen Ellis, et al.
 *
 *   Pull a state's Census 2020 P.L. 94-171 redistricting counts (table P2 — Hispanic-or-Latino by
 *   race, per block) into the `pl_block` table of a TIGER {@link DatabaseClient} DB, keyed on the
 *   same 15-char block `GEOID` as {@link fetchTIGER}'s `tabblock20`. Join the two for block-level
 *   race + geometry (e.g. a dot-density map).
 *
 *   Keyless public data. The per-state ZIP holds a pipe-delimited geographic header
 *   (`<st>geo<yr>.pl`) and three data segments; segment 1 (`<st>00001<yr>.pl`) carries P1 + P2. We
 *   join the header (filtered to SUMLEV 750 = block) to segment 1 by LOGRECNO. Field offsets are
 *   fixed by the 2020 P.L. layout (verified against the real files).
 *
 *   https://www2.census.gov/programs-surveys/decennial/2020/data/01-Redistricting_File--PL_94-171/
 */
export interface FetchRedistrictingOptions {
    /**
     * Two-digit state FIPS, e.g. `"06"`.
     */
    stateFIPS: string;
    /**
     * Decennial vintage. Default 2020 (the only P.L. 94-171 release this parses).
     */
    vintage?: number;
    /**
     * Output SQLite path. Default `<dataRoot>/tiger/tiger.db` (same DB as `fetchTIGER`).
     */
    outPath?: string;
    /**
     * Download cache + default output root.
     */
    dataRoot?: string;
    /**
     * Optional three-digit county FIPS filter, e.g. `"059"`.
     */
    county?: string;
    /**
     * Rows per insert. Default 2000.
     */
    batchSize?: number;
}
export type FetchRedistrictingEvent = {
    phase: "download";
    file: string;
    cached: boolean;
} | {
    phase: "extract";
    file: string;
} | {
    phase: "header";
    blocks: number;
} | {
    phase: "load";
    inserted: number;
    total: number;
};
export interface FetchRedistrictingResult {
    outPath: string;
    table: string;
    inserted: number;
}
/**
 * Fetch one state's P.L. 94-171 block race counts into `pl_block`. Yields progress; returns the tally.
 */
export declare function fetchRedistricting(options: FetchRedistrictingOptions): AsyncGenerator<FetchRedistrictingEvent, FetchRedistrictingResult>;
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