/**
 * Default directories skipped by client reference discovery.
 * These are dependencies or generated asset outputs that can contain
 * framework templates and stale bundles rather than application sources.
 *
 * The pattern matches path segment boundaries anywhere in the relative path
 * and supports both POSIX and Windows separators.
 */
export declare const DEFAULT_CLIENT_REFERENCES_EXCLUDE: RegExp;
/**
 * Default source-file extensions scanned for `"use client"` directives.
 * Matches JavaScript, TypeScript, JSX, TSX, and their CommonJS/ESM variants.
 */
export declare const DEFAULT_CLIENT_REFERENCES_INCLUDE: RegExp;
/** Check whether `source` starts with a `"use client"` directive. */
export declare function hasUseClientDirective(source: string | Buffer): boolean;
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