export interface ResolvedCliAsset {
    version: string;
    assetName: string;
    downloadUrl: string;
}
export declare function cliAssetName(platform: string, arch: string): string | null;
/**
 * OS-idiomatic install dir, in preference order:
 *
 * POSIX — `~/.local/bin` when it is already on `$PATH` (the XDG user-binaries
 * dir); otherwise `/usr/local/bin` when it is on `$PATH` and writable without
 * privileges; otherwise `~/.local/bin` anyway (created, with a PATH hint).
 * Windows — `%LOCALAPPDATA%\Programs\slicc` (the per-user programs idiom).
 */
export declare function resolveInstallDir(env?: NodeJS.ProcessEnv, platform?: string, isWritableDir?: (dir: string) => boolean): string;
/**
 * Scan releases newest→oldest for the first one carrying `assetName`.
 * Returns null when no release within MAX_RELEASE_PAGES pages has it.
 */
export declare function resolveLatestCliAsset(assetName: string, fetchImpl?: typeof fetch): Promise<ResolvedCliAsset | null>;
export interface InstallCliOptions {
    fetchImpl?: typeof fetch;
    platform?: string;
    arch?: string;
    /** Overrides the resolved OS-idiomatic default (the `--install-dir` flag). */
    installDir?: string | null;
    env?: NodeJS.ProcessEnv;
    log?: (line: string) => void;
    logError?: (line: string) => void;
}
/**
 * Download the newest released `slicc` CLI binary for this platform into the
 * install dir. Returns a process exit code.
 */
export declare function runInstallCli(options?: InstallCliOptions): Promise<number>;