declare function isMissingDefaultBundlerExtension(error: unknown): boolean;
declare function registerDefaultBundlerModule(extensionModule: unknown): void;
/** @internal Test-only seams; this module is not a public package entry point. */
export declare const defaultBundlerContractsInternals: Readonly<{
    isMissingDefaultBundlerExtension: typeof isMissingDefaultBundlerExtension;
    registerDefaultBundlerModule: typeof registerDefaultBundlerModule;
}>;
/**
 * Lazily register the first-party Bundler + ModuleLexer implementation when it
 * is available from workspace source or an installed @veryfront/ext package.
 */
export declare function ensureDefaultBundlerContracts(): Promise<void>;
export {};
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