import type * as commander from 'commander';
/** Build-family commands eligible for the optimized build toolchain hint. */
export declare const OPTIMIZED_BUILD_HINT_COMMANDS: string[];
/**
 * Returns a very visible info box hinting the user to opt in to the optimized
 * build toolchain. When `--optimize` is not set, hints at both `--optimize` and
 * `--enable-code-splitting`; otherwise hints at `--enable-code-splitting` only.
 *
 * Callers decide when to show it (i.e. for a build-family command that is
 * missing at least one of the flags).
 */
export declare function getOptimizedBuildHint(program: commander.OptionValues): string;