import type { NormalizerData } from '../../normalizer-data';
import type { RSymbol } from '../../../../model/nodes/r-symbol';
import type { NamedJsonEntry } from '../../../json/format';
/**
 * Normalize the given object as an R symbol (incorporating namespace information).
 * <p>
 * The special symbols `T` and `F` are parsed as logic values.
 *
 * @param data - The data used by the parser (see {@link NormalizerData})
 * @param objs - The JSON object to extract the meta-information from
 *
 * @returns The parsed symbol (with populated namespace information) or `undefined` if the given object is not a symbol.
 */
export declare function tryNormalizeSymbol(data: NormalizerData, objs: readonly NamedJsonEntry[]): RSymbol | undefined;