import { type CommandSpec, type Operand, type Option, UsageStyle } from './types.ts';
/**
 * The bare name of an option's value, declared or derived.
 *
 * clap derives one from the long spelling when the author declares no
 * `value_name`: dashes to underscores, uppercased. Deriving it the same way
 * means only the options that actually override it have to say so.
 */
export declare function optionMetavar(opt: Option): string;
/**
 * One operand's slot in a clap usage line. Required slots take angle brackets
 * and optional ones square, which is the only thing clap's usage line says
 * about arity besides the trailing ellipsis on a variadic.
 */
export declare function operandSlot(operand: Operand, ellipsis?: boolean): string;
export declare function renderHelp(name: string, spec: CommandSpec, subcommands?: readonly [string, string][], style?: UsageStyle): string;
export declare function clapUnexpectedArgument(token: string): string;
export declare function clapGroupRefusal(name: string, spec: CommandSpec, subcommands: readonly [string, string][], message: string): string;
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