/**
 * Parser backend selection for @liendev/parser (ADR-013 / native-parser.md).
 *
 * Self-contained: parser must NOT import @liendev/core, so this mirrors the
 * validation shape of core's config/global-config.ts loadConfigFromEnv
 * (throw a clear Error naming the bad value and the valid set) without
 * depending on it.
 *
 * ADR-013 Phase 4-B: `native` (@liendev/parser-native) is now the only
 * backend -- `legacy` (node-tree-sitter) was removed one release after the
 * default flipped to native. LIEN_PARSER=native remains valid (a no-op,
 * since it's also the default) so existing explicit opt-ins don't need to
 * change.
 */
export type ParserBackend = 'native';
/**
 * Resolve which parser backend to use from LIEN_PARSER, read at call time
 * (not module load) so tests can flip it between assertions.
 *
 * @throws Error if LIEN_PARSER is set to a retired value ('legacy') or to
 *   anything else that isn't 'native'.
 */
export declare function resolveParserBackend(): ParserBackend;
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