export declare function isPreReleasePackageVersion(version: string | undefined): boolean;
export declare function isSafeInstalledPackageDirectoryName(value: string): boolean;
export declare function resolveContainedPackagePath(cachePath: string, packageId: string, version: string): string;
export declare function resolveContainedTemporaryPath(cachePath: string, packageId: string): string;
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