import { ROUTEKIT_PACKAGE_NAME } from "./types.js";
export type InstallerReceipt = {
    schemaVersion: 1;
    provenance: "routekit-installer";
    manager: "npm";
    packageName: typeof ROUTEKIT_PACKAGE_NAME;
    prefix: string;
    npmExecutable: string;
    nodeExecutable: string;
    routekitExecutable: string;
    installMode: "system" | "private";
};
export declare function npmPrefixFromPackageRoot(packageRoot: string): string | undefined;
export declare function installerReceiptPath(prefix: string): string;
export declare function readInstallerReceipt(packageRoot: string): {
    path: string;
    receipt: InstallerReceipt;
} | undefined;
export declare function privateRuntimeNpmCandidates(packageRoot: string, env: NodeJS.ProcessEnv): string[];
export declare function isPrivateInstallerNpm(executable: string, prefix: string, env: NodeJS.ProcessEnv): boolean;
export declare function writeInstallerReceipt(receipt: InstallerReceipt): string;
export declare function packageRootProject(packageRoot: string): string | undefined;