import { Book } from './core/types';
import { ReadableContentUnitKind } from './core/readable-content';
export type SearchScope = 'book' | 'unit';
export interface SearchOptions {
    /** Search all readable units or one selected unit. Defaults to 'book'. */
    scope?: SearchScope;
    /** Readable unit index used when scope is 'unit'. */
    unitIndex?: number;
    /** Search only these readable unit indexes. Overrides scope/unitIndex. */
    unitIndexes?: readonly number[];
    /** Defaults to false. */
    caseSensitive?: boolean;
    /** Match whole words only. Defaults to false. */
    wholeWord?: boolean;
    /** Maximum result count. Defaults to 100. */
    maxResults?: number;
    /** Number of context characters on each side. Defaults to 48. */
    contextChars?: number;
}
export interface SearchResult {
    query: string;
    unitIndex: number;
    unitId: string | number;
    unitKind: ReadableContentUnitKind;
    unitTitle?: string;
    sectionIndex?: number;
    pageIndex?: number;
    blockId?: string;
    blockType?: string;
    matchIndex: number;
    start: number;
    end: number;
    excerpt: string;
    before: string;
    match: string;
    after: string;
}
export interface ContentUnitSearchResult {
    unitIndex: number;
    unitId: string | number;
    unitKind: ReadableContentUnitKind;
    unitTitle?: string;
    sectionIndex?: number;
    pageIndex?: number;
    results: SearchResult[];
}
/**
 * Search a book's readable content. Reflowable books search sections; fixed
 * documents search pages that expose text.
 */
export declare function searchBook(book: Book, query: string, options?: SearchOptions): Promise<SearchResult[]>;
/**
 * Search every readable content unit and return grouped results.
 */
export declare function searchContentUnits(book: Book, query: string, options?: Omit<SearchOptions, 'scope' | 'unitIndex' | 'unitIndexes'>): Promise<ContentUnitSearchResult[]>;
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