/**
 * byParagraph — cut on blank lines, pack up to `maxChars`.
 *
 * Pattern: Strategy (one of `Splitter`).
 * Role:    rag/ layer. The right default for prose that carries no headings.
 * Emits:   N/A.
 *
 * A blank line is the weakest structural signal a document reliably has, and
 * unlike a character count it at least falls where the author paused. Adjacent
 * paragraphs are packed together until the next one would exceed `maxChars`,
 * so a document of short paragraphs yields whole chunks rather than one chunk
 * per line.
 *
 * A single paragraph longer than `maxChars` is hard-cut — see the note in
 * `shared.ts` on why packing and cutting are separate decisions.
 *
 * Packing already merges neighbours that FIT — but a short paragraph whose
 * next neighbour is near `maxChars` cannot pack and used to ship alone, where
 * its density outranks real passages (the same failure `byHeading` measured;
 * see `DEFAULT_MIN_CHARS`). Since 8.20.0 a chunk under `minChars` merges
 * FORWARD into the next chunk instead — never dropped, never alone.
 */
import type { Splitter } from '../types.js';
export interface ByParagraphOptions {
    /** Target chunk size in characters. Default 1000 — see the family docstring. */
    readonly maxChars?: number;
    /** Backward overlap between adjacent chunks. Default 150. */
    readonly overlapChars?: number;
    /**
     * The floor under a chunk, in characters (8.20.0). A packed chunk that
     * remains shorter — a stray short paragraph that could not pack with its
     * full-sized neighbour — merges FORWARD into the next chunk rather than
     * shipping alone. Default `min(250, maxChars / 4)`; `0` disables. See
     * `DEFAULT_MIN_CHARS` for the measured failure behind the number.
     */
    readonly minChars?: number;
}
export declare function byParagraph(options?: ByParagraphOptions): Splitter;