/**
 * The BibTeX/BibLaTeX entry field grammar, shared by the host's entry
 * fingerprinting (`export-mapping.ts`) and the client's exports lens.
 *
 * This module is the one home of the shared *source* string: the two halves
 * need different flags for the same key grammar, so the grammar travels as a
 * string and each side compiles its own `RegExp`. Field extraction lives beside
 * it because the host reads titles, DOIs, years, and authors out of one entry
 * with it. RIS and CSL JSON entries are parsed by the locators in
 * `export-mapping.ts`, which are their only readers; this module holds no
 * per-format parser.
 * @module dsh-zotero/export-items
 */
/**
 * The BibTeX/BibLaTeX entry-header key grammar, shared as a source string
 * because the two halves need different flags: the host parses one entry
 * with stateless `exec`, the client's exports lens scans a whole body with
 * `matchAll` (which requires `g`).
 */
export declare const BIBTEX_KEY_SOURCE = "@[A-Za-z]+\\{([^,\\s{}]+),";
/**
 * Extract the raw string value of a named field from a single BibTeX entry text,
 * brace-aware (nested `{{...}}` included), double-quoted, or bare numeric/token value.
 * @param text - one BibTeX/BibLaTeX entry body.
 * @param fieldName - the field to read; unknown names fall back to a generic pattern.
 * @param allowBareToken - whether a bare `year = 2024` value counts, or only braced and quoted ones.
 * @returns the raw field value, or undefined when the entry has no such usable field.
 */
export declare function bibtexFieldOf(text: string, fieldName: string, allowBareToken?: boolean): string | undefined;
/**
 * Scan a bare BibTeX token (e.g. key, number, or bare value) up to comma, brace, or whitespace.
 */
export declare function scanBibtexToken(text: string, from: number): string | undefined;
//# sourceMappingURL=export-items.d.ts.map