export declare function isHtmlNonceCachePlaceholder(value: unknown): value is string;
/**
 * Replace only inline script/style nonce attributes that already hold the
 * render's unpredictable response nonce. The random placeholder is internal
 * to this cache entry, so raw application markup cannot opt itself into nonce
 * rebinding on a later request.
 */
export interface SealedHtmlNonce {
    readonly html: string;
    readonly placeholder?: string;
}
export declare function sealHtmlNonceForCache(html: string, nonce?: string): SealedHtmlNonce;
/** Reject legacy/unsealed entries whenever the response enforces a nonce. */
export declare function isHtmlNonceCacheCompatible(placeholder: string | undefined, nonce?: string): boolean;
/** Bind an internally authenticated cache slot to the current response. */
export declare function bindHtmlNonceFromCache(html: string, placeholder: string | undefined, nonce?: string): string;
export declare function addNonceToHtmlTags(html: string, nonce?: string): string;
export declare function addNonceToHtmlStream(stream: ReadableStream<Uint8Array>, nonce?: string): ReadableStream<Uint8Array>;
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