/**
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* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import type { Config } from '@jest/types';
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export declare function clearFsCache(): void;
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export declare type PkgJson = Record<string, unknown>;
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export declare function readPackageCached(path: Config.Path): PkgJson;
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export declare function findClosestPackageJson(start: Config.Path): Config.Path | undefined;
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export declare function isFile(file: Config.Path): boolean;
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export declare function isDirectory(dir: Config.Path): boolean;
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export declare function realpathSync(file: Config.Path): Config.Path;
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