export declare function withTempDirectoryIn(parentDirectory: string | undefined, fn: (directory: string) => Promise): Promise; export declare function withTempDirectory(fn: (directory: string) => Promise): Promise; export declare function normalizeVersion(version: string): string; /** * Runs the `uname` command and returns the trimmed output. */ export declare function uname(): string; /** * Generates an architecture name that would be used in an Electron or Node.js * download file name. */ export declare function getNodeArch(arch: string): string; /** * Generates an architecture name that would be used in an Electron or Node.js * download file name, from the `process` module information. */ export declare function getHostArch(): string; export declare function ensureIsTruthyString(obj: T, key: K): void; export declare function isOfficialLinuxIA32Download(platform: string, arch: string, version: string, mirrorOptions?: object): boolean;