/** Internal namespace selected by every project CSS cache backend. */
export declare const PROJECT_CSS_CACHE_NAMESPACE = "project-css";
/** Internal schema for project CSS cache identities. */
export declare const PROJECT_CSS_CACHE_SCHEMA = "v5";
/** Internal namespace selected by every prepared project CSS cache backend. */
export declare const PREPARED_PROJECT_CSS_CACHE_NAMESPACE = "prepared-project-css";
/** Internal schema for prepared project CSS cache identities. */
export declare const PREPARED_PROJECT_CSS_CACHE_SCHEMA = "v5";
export interface ProjectCSSCacheKeyFields {
    readonly projectScope: string;
    readonly environment: string;
    readonly stylesheetHash: string;
    readonly candidatesHash: string;
    readonly profileHash: string;
}
export interface DecodedProjectCSSCacheKey {
    readonly projectScope: string;
    readonly environment: string;
}
export interface PreparedProjectCSSCacheKeyFields {
    readonly projectScope: string;
    readonly environment: string;
    readonly identityHash: string;
}
export type DecodedPreparedProjectCSSCacheKey = DecodedProjectCSSCacheKey;
/** Build the delimiter- and glob-safe prefix shared by lookup and invalidation. */
export declare function buildProjectCSSCacheScopePrefix(projectScope: string): string;
/** Build one bounded, injectively framed project CSS cache identity. */
export declare function buildProjectCSSCacheKey(fields: ProjectCSSCacheKeyFields): string;
/** Decode only exact keys emitted by {@link buildProjectCSSCacheKey}. */
export declare function decodeProjectCSSCacheKey(key: string): DecodedProjectCSSCacheKey | null;
/** Build the exact prepared-CSS prefix shared by local and distributed invalidation. */
export declare function buildPreparedProjectCSSCacheScopePrefix(projectScope: string): string;
/** Build one bounded prepared-CSS identity from its pre-hashed identity tuple. */
export declare function buildPreparedProjectCSSCacheKey(fields: PreparedProjectCSSCacheKeyFields): string;
/** Decode only exact keys emitted by {@link buildPreparedProjectCSSCacheKey}. */
export declare function decodePreparedProjectCSSCacheKey(key: string): DecodedPreparedProjectCSSCacheKey | null;
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