export type InstallMode = 'docker' | 'source';
export interface StarterOptions {
    folder: string;
    /** Null: ask the reader. */
    mode: InstallMode | null;
    /** The release tag to install, or null for the newest. */
    ref: string | null;
}
export type ParsedArgs = {
    kind: 'help';
} | {
    kind: 'version';
} | {
    kind: 'run';
    options: StarterOptions;
} | {
    kind: 'error';
    message: string;
};
/** A release tag as the starter accepts it from --ref: v2.0.0, or v2.0.0-rc.8. */
export declare const REF_PATTERN: RegExp;
/** Reads the arguments after `npx ririko`. Never throws: a bad argument is an `error` result. */
export declare function parseArgs(argv: readonly string[]): ParsedArgs;
export declare function helpText(version: string): string;