/**
 * Single source of truth for which files are indexable and which
 * {@link SymbolLang} they map to.
 *
 * Keep this list broad: missing a native AST parser must never mean "skip
 * the file". Unknown programming/config sources still go through the generic
 * regex extractor under their mapped lang (or `'other'`).
 */
import type { SymbolLang } from './schema.js';
/**
 * Extension → language. Keys are lowercase including the leading dot.
 * Multi-dot extensions (`.d.ts`) are handled specially in {@link detectLang}.
 */
export declare const EXT_TO_LANG: Readonly<Record<string, SymbolLang>>;
/** Sorted unique extension list for discovery walks. */
export declare const INDEXABLE_EXTENSIONS: readonly string[];
/**
 * Detect {@link SymbolLang} from a file path.
 * Returns `null` only for paths we intentionally refuse to index (binary
 * assets, lockfiles handled elsewhere, plain `.txt` without special name, …).
 */
export declare function detectLang(file: string): SymbolLang | null;
/** True when the path is eligible for the codebase index. */
export declare function isIndexablePath(file: string): boolean;
/**
 * A group of {@link SymbolLang}s whose symbols may legitimately reference each
 * other by bare name.
 *
 * Ref resolution matches `to_name` against `symbols.name`. Done globally that
 * is actively wrong once more than one language is indexed: `main`, `New`,
 * `Get`, `String`, `__init__`, `Parse` and `Config` all exist in half a dozen
 * languages at once, so a Go call would resolve to a TypeScript declaration and
 * draw a Code Atlas edge between files that have nothing to do with each other.
 * Scoping resolution to a family keeps cross-language noise out while still
 * letting genuinely mixed families (`.ts`/`.tsx` + the script block of a
 * `.vue`/`.svelte` file, `.java`/`.kt` on the JVM) resolve into one another.
 */
type LangFamily = 'js' | 'go' | 'py' | 'rs' | 'jvm' | 'dotnet' | 'c' | 'ruby' | 'php' | 'swift' | 'dart' | 'elixir' | 'haskell' | 'zig' | 'lua' | 'r' | 'shell' | 'sql' | 'data' | 'web' | 'proto' | 'graphql' | 'other';
/**
 * `(lang, family)` pairs, for mirroring the mapping into SQLite so ref
 * resolution can join on it instead of expanding a family into an IN-list of
 * placeholders on every statement.
 */
export declare const LANG_FAMILY_ENTRIES: ReadonlyArray<readonly [SymbolLang, LangFamily]>;
/** Family a language resolves within. */
export declare function languageFamily(lang: SymbolLang): LangFamily;
/** Every language in the same resolution family as `lang`, including itself. */
export declare function familyMembers(lang: SymbolLang): SymbolLang[];
export {};
//# sourceMappingURL=languages.d.ts.map