import { Readable } from 'node:stream';

interface VersionInfo {
    latest: string;
    minimumFromRegistry: string | null;
}
declare function checkNodeVersion(enginesNode: string, currentVersion: string): string | null;
declare function compareSemver(a: string, b: string): number;
declare function isPreReleaseVersion(version: string): boolean;
declare function preReleaseWarning(version: string): string | null;
declare function fetchVersionInfo(): Promise<VersionInfo | null>;
declare function handlePreflightVersionCheck(info: VersionInfo | null): "abort" | "nudge" | "ok";
type VersionFreshness = "current" | "outdated" | "unsupported" | "unknown";
declare function classifyVersionFreshness(currentVersion: string, info: VersionInfo | null): VersionFreshness;
declare function isInternalUser(cwd?: string): boolean;
declare function isInteractive(): boolean;
declare function promptYesNo(question: string, input?: Readable): Promise<boolean>;
declare function classifyErrorArea(msg: string): string | null;
type VersionVerdict = {
    action: "forced_update";
    currentVersion: string;
    minimumVersion: string;
} | {
    action: "suggest_update";
    currentVersion: string;
    latestVersion: string;
    internal: boolean;
} | {
    action: "bug_report";
    internal: boolean;
} | {
    action: "none";
};
declare function assessVersion(currentVersion: string, info: VersionInfo, internal: boolean): VersionVerdict;
declare function handleFailedDeploy(error: Error): Promise<void>;

export { type VersionFreshness, type VersionVerdict, assessVersion, checkNodeVersion, classifyErrorArea, classifyVersionFreshness, compareSemver, fetchVersionInfo, handleFailedDeploy, handlePreflightVersionCheck, isInteractive, isInternalUser, isPreReleaseVersion, preReleaseWarning, promptYesNo };