import type { FixtureSet, ScriptBuilder } from "./fixture-builder.js";
/**
 * Write a FixtureSet (or ScriptBuilder) to a JSON file.
 * The file is written as `{ "fixtures": [...] }` (pretty-printed, 2-space indent).
 * Parent directories are created automatically.
 */
export declare function writeFixtures(path: string, fixtures: FixtureSet | ScriptBuilder): void;
/**
 * Load a FixtureSet from a JSON file.
 * Accepts `{ "fixtures": [...] }` (wrapped) or a bare array.
 * Throws a clear error if the file is missing or the JSON is not a fixture set.
 */
export declare function loadFixtures(path: string): FixtureSet;
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