import type { ResolvedNode } from "../../pdpp/host.js";
/**
 * The npm that sits beside `node`, or none: a Node whose npm was removed or
 * broken (a half-finished `nvm install`, a stray uninstall) leaves the binary
 * without one.
 */
export declare class NpmMissingError extends Error {
    readonly nodePath: string;
    constructor(node: ResolvedNode, platform: NodeJS.Platform);
}
/** `npm ci` ran and failed; its output is in the install log. */
export declare class RuntimeInstallError extends Error {
    constructor(message: string);
}
export interface RuntimeInstallDeps {
    exec: (file: string, args: string[], options: {
        cwd: string;
        env: NodeJS.ProcessEnv;
        maxBuffer?: number;
        windowsHide?: boolean;
    }) => Promise<{
        stdout: string;
        stderr: string;
    }>;
    env: NodeJS.ProcessEnv;
    platform: NodeJS.Platform;
}
export declare function isRuntimeInstalled(dir?: string): boolean;
/**
 * Install the pinned Personal Server into its versioned dir with `npm ci`, so
 * every install resolves to the same dependency tree, then prove the native
 * module loads under the Node that will run it.
 */
export declare function ensureRuntime(node: ResolvedNode, logPath: string, dir?: string, overrides?: Partial<RuntimeInstallDeps>): Promise<string>;
//# sourceMappingURL=runtime.d.ts.map