export declare function readInstalledPipeworkVersion(cwd: string): string | undefined;
/**
 * True when `installed` is at least `required`. A version either side that is
 * not a plain `x.y.z` (a workspace link, a tag) is not something this can
 * judge, so it passes — the point is catching an install that did not run.
 */
export declare function isAtLeastVersion(installed: string, required: string): boolean;
export declare function installMismatchMessage(required: string, installed: string | undefined, cwd: string): string;
export interface PnpmInstallOptions {
    readonly cwd: string;
    /** The pipework version the generated package.json asks for, as plain `x.y.z`. */
    readonly requiredPipeworkVersion: string;
}
export type PnpmInstallOutcome = {
    readonly ok: true;
    readonly installedPipeworkVersion: string;
} | {
    readonly ok: false;
    readonly message: string;
};
export declare function runPnpmInstall(options: PnpmInstallOptions): PnpmInstallOutcome;
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