/**
 * Formats the specified string, replacing placeholders with their associated arguments.
 * @example Formatting
 * format("Hello {0}", "world") // "Hello world"
 * @example Escaping braces
 * format("Escaped {{0}}") // "Escaped {0}"
 * @param format Source format string.
 * @param args Arguments used to replace placeholders.
 * @returns The formatted string.
 */
export declare function format(format: string, ...args: unknown[]): string;