export declare const PIONEER_PACKAGE_NAME = "@rock3r/pioneer";
export declare const PIONEER_PACKAGE_REGISTRY = "https://registry.npmjs.org/";
export interface UpdateCheckState {
    readonly schemaVersion: 1;
    readonly checkedAt: number;
    readonly latestVersion?: string;
}
export interface UpdateStateStore {
    read(): Promise<UpdateCheckState | undefined>;
    write(state: UpdateCheckState): Promise<void>;
}
export interface UpdateCheckResult {
    readonly checked: boolean;
    readonly latestVersion?: string;
    readonly updateAvailable: boolean;
}
export interface UpdateCheckOptions {
    readonly currentVersion: string;
    readonly now?: number;
    readonly force?: boolean;
    readonly store?: UpdateStateStore;
    readonly lookup?: () => Promise<string>;
}
export type NpmCommandRunner = (command: string, args: readonly string[]) => Promise<string>;
export declare function trustedNpmEnvironment(source?: NodeJS.ProcessEnv, home?: string, nodeExecutable?: string, platform?: NodeJS.Platform): NodeJS.ProcessEnv;
export declare function npmCliCommand(args: readonly string[], nodeExecutable?: string, platform?: NodeJS.Platform): readonly [string, ...string[]];
export declare function systemNpmCliPaths(platform?: NodeJS.Platform): readonly string[];
export declare function withIsolatedNpmConfig<T>(run: (configArguments: readonly [string, string], cwd: string) => Promise<T>): Promise<T>;
export declare function isNewerVersion(candidate: string, current: string): boolean;
export declare function updateCachePath(environment?: NodeJS.ProcessEnv): string;
export declare function fileUpdateStateStore(cachePath?: string): UpdateStateStore;
export declare function runTrustedNpm(args: readonly string[]): Promise<void>;
export declare function fetchLatestVersionFromNpm(run?: NpmCommandRunner): Promise<string>;
export declare function checkForUpdate(options: UpdateCheckOptions): Promise<UpdateCheckResult>;
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