/**
 * Use invariant() to assert state which your program assumes to be true.
 *
 * Provide sprintf-style format (only %s is supported) and arguments to provide
 * information about what broke and what you were expecting.
 *
 * The invariant message will be stripped in production, but the invariant will
 * remain to ensure logic does not differ in production.
 */
declare function invariant(condition: any, format: string, ...args: any[]): string;

declare namespace invariant {}

export = invariant;