type CspDirectiveValue = string | string[] | false;
interface ContentSecurityPolicyDirectives {
    [directive: string]: CspDirectiveValue;
}
interface ContentSecurityPolicyOptions {
    /** Full HTML Content-Security-Policy. Replaces the HTMX/SPA baseline. */
    csp?: string;
    /** Alias for `csp`. */
    htmlCsp?: string;
    /** Merge extra sources into the HTML baseline. `false` removes a directive. */
    directives?: ContentSecurityPolicyDirectives;
}
interface ResolveContentSecurityPolicyOptions extends ContentSecurityPolicyOptions {
    nonce?: string;
}
/** HTMX 2.0.4 default indicator CSS (line-continued string inside insertIndicatorStyles). */
declare const HTMX_2_0_4_INDICATOR_STYLE_HASH = "'sha256-bsV5JivYxvGywDAZ22EZJKBFip65Ng9xoJVLbBg7bdo='";
declare function generateCspNonce(): string;
declare function configureContentSecurityPolicy(options: ContentSecurityPolicyOptions): void;
declare function resetContentSecurityPolicyForTests(): void;
declare function strictApiContentSecurityPolicy(): string;
declare function serverHtmxContentSecurityPolicy(nonce?: string): string;
declare function spaContentSecurityPolicy(nonce?: string): string;
declare function resolveHtmlContentSecurityPolicy(options?: ResolveContentSecurityPolicyOptions): string;
declare function resolveContentSecurityPolicy(response: Response, options?: ResolveContentSecurityPolicyOptions): string;
export type { ContentSecurityPolicyDirectives, ContentSecurityPolicyOptions };
export { configureContentSecurityPolicy, generateCspNonce, HTMX_2_0_4_INDICATOR_STYLE_HASH, resetContentSecurityPolicyForTests, resolveContentSecurityPolicy, resolveHtmlContentSecurityPolicy, serverHtmxContentSecurityPolicy, spaContentSecurityPolicy, strictApiContentSecurityPolicy, };