import type { PropFormula } from "../../../models";
/**
 * Applies the rule of Implication Elimination.
 *
 * Given an implication (A => B) and its antecedent A,
 * it derives the consequent B.
 *
 * @param formulas An array of propositional formulas.
 * @returns {[PropFormula]} A tuple containing the inferred formula.
 * @throws {Error} if implication elimination is not applicable.
 */
export declare function implicationElimination(formulas: PropFormula[]): [PropFormula];