/** Apply the `underscore` column transform to every key of a row. */
export declare function underscoreKeys(row: Record<string, any>): Record<string, any>;
/**
 * Parse Savant CSV text into tidy rows. Standard quoted CSV (the first header
 * is `"last_name, first_name"` — preserved verbatim). Empty / unparseable input
 * returns `[]`. Headers go through `underscore` (a near no-op on Savant's
 * already-snake headers).
 */
export declare function csvToRowsRaw(text: any): Record<string, any>[];
/**
 * Parse a Statcast search CSV payload (`/statcast_search/csv`) into tidy rows,
 * one row per search result. Non-string / empty input returns `[]`.
 */
export declare function parse_mlb_statcast_search(payload: any): Record<string, any>[];
/**
 * Parse a Statcast leaderboard CSV payload (`/leaderboard/*` with `csv=true`)
 * into tidy rows, one row per leaderboard entry. Non-string / empty input
 * returns `[]`. The first column header (`"last_name, first_name"`) is kept
 * verbatim, matching the Python parser.
 */
export declare function parse_mlb_statcast_leaderboard(payload: any): Record<string, any>[];
/**
 * Parse a Statcast gamefeed (`/gf`) JSON payload into a tidy per-pitch frame.
 *
 * The Savant `/gf` feed carries the game's pitch-by-pitch tracking under the
 * `team_home` and `team_away` arrays (one rich object per pitch). This
 * concatenates both sides into one frame, one row per pitch. When neither side
 * is present it falls back to the `exit_velocity` array (batted-ball events).
 */
export declare function parse_mlb_statcast_gamefeed(payload: any): Record<string, any>[];
/**
 * Parse the Savant `/schedule` JSON into a tidy frame of one row per game.
 *
 * The feed wraps the standard MLB Stats API schedule under
 * `schedule.dates[].games[]`. This flattens every game across all dates into
 * one row, snake-cased. Missing / empty input returns `[]`.
 */
export declare function parse_mlb_statcast_schedule(payload: any): Record<string, any>[];
/**
 * Parse an HTML-embedded-JSON Statcast leaderboard into a tidy frame.
 *
 * A couple of leaderboards (`fielding-run-value`, `statcast-park-factors`)
 * return `text/html` even with `csv=true`; the rows live in an embedded
 * `const data = [...]` `<script>` array. This extracts and flattens that array.
 */
export declare function parse_mlb_statcast_html_leaderboard(payload: any): Record<string, any>[];
/**
 * Parse a Savant player page into a tidy frame of one of its embedded tables.
 *
 * The `/savant-player/{id}` page embeds a large `var serverVals = {...}` blob
 * whose array-valued keys are the page's data tables. `section` selects which
 * one — default `"statcast"` (the seasonal Statcast aggregate). Other useful
 * sections include `"statcastGameLogs"`, `"statcastHistogram"`, `"zones"`,
 * `"pitchDetails"`, `"sprayChart"`, `"fielderPositioning"`, `"statcastLeader"`.
 *
 * @param payload HTML page text (e.g. from `mlb_statcast_player(..., raw: true)`).
 * @param section name of the `serverVals` array key to flatten.
 */
export declare function parse_mlb_statcast_player(payload: any, section?: string): Record<string, any>[];
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