import type { NormalizerData } from '../../normalizer-data';
import type { RParameter } from '../../../../model/nodes/r-parameter';
import type { NamedJsonEntry } from '../../../json/format';
/**
 * Either parses `[SYMBOL_FORMALS]` or `[SYMBOL_FORMALS, EQ_FORMALS, expr]` as a parameter of a function definition in R.
 * Probably directly called by the function definition parser as otherwise, we do not expect to find parameters.
 *
 * @param data - The data used by the parser (see {@link NormalizerData})
 * @param objs - Either `[SYMBOL_FORMALS]` or `[SYMBOL_FORMALS, EQ_FORMALS, expr]`
 *
 * @returns The parsed parameter or `undefined` if the given object is not a parameter.
 */
export declare function tryNormalizeParameter(data: NormalizerData, objs: readonly NamedJsonEntry[]): RParameter | undefined;