import type { TreeSitterFolderOptions } from "./tree-sitter/engine.ts";
import type { ReadFolder } from "./types.ts";
export type PrepareReadFolderOptions = Omit<TreeSitterFolderOptions, "fallback">;
/**
 * Resolve the folder a default read must use for this path. Only a language the frozen selection
 * binds to `wasm` loads a grammar, lazily and once; every other language keeps the folder it was
 * given, and a grammar that is absent or unusable keeps it too. A caller that supplies its own
 * folder keeps exactly that folder: the selection decides eligibility, never someone else's engine.
 */
export declare function prepareReadFolder(path: string, folder: ReadFolder | undefined, options?: PrepareReadFolderOptions): Promise<ReadFolder | undefined>;
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