/* Declarations for lib/conjugation.js — the module itself ships unchanged. */

/** Forms that do not fall out of the rules and are simply known. */
export const IRREGULAR_FORMS: Record<string, string>;

/** Dictionary form → 반말 present (해체). Returns null for non-verbs. */
export function haeche(dict: string): string | null;

/** 반말 present → 반말 past. 먹어 → 먹었어. */
export function past(present: string | null): string | null;

export function polite(present: string | null): string | null;

export type IrregularClass =
  | "ㅡ" | "ㅂ" | "ㄷ" | "르" | "ㅅ" | "ㅎ" | "special" | "regular";

/** Which class a dictionary form belongs to — drives the "why" in feedback. */
export function irregularClass(dict: string): IrregularClass;

/** Human explanation of the rule applied — shown when an answer is wrong. */
export function explain(dict: string): string;

export interface SurfaceForm {
  form: string;
  gloss: string;
  note: string;
}

/**
 * Build-time: every surface form a learner will meet, mapped back to its lemma.
 * This is what replaces a runtime morphological analyser.
 */
export function surfaceForms(dict: string, gloss: string): SurfaceForm[];