/**
 * Represents any value for the given argument.
 */
export declare const $exists: unique symbol;
/**
 * Represents the name of the argument that is the originator of a configuration
 * check.
 */
export declare const $genesis: unique symbol;
/**
 * Represents the canonical form of an implication (i.e. excluding expansions,
 * aliases, etc).
 */
export declare const $canonical: unique symbol;
/**
 * Will appear in the `argv` of commands that were invoked via
 * {@link getInvocableExtendedHandler} instead of naturally via Black Flag.
 */
export declare const $artificiallyInvoked: unique symbol;