/**
* The sanitizer capability Lyra consumes from DOMPurify.
*
* This owned structural type keeps optional peer declarations out of Lyra's
* public declaration graph while still requiring loaders to validate the
* method they call.
*/
export interface HtmlSanitizer{sanitize(input:string,options?:Record<string,unknown>):unknown;}
/** Returns an ESM default export when present, otherwise the original value. */
export declare function unwrapOptionalPeerDefault(value:unknown):unknown;
/**
* Selects an optional peer by capability, preferring the module namespace before its default.
*
* Some CJS/ESM interop wrappers expose both shapes. The namespace may carry the real named API
* while an unrelated or stale `default` is also present, so property presence alone is not enough
* to choose safely.
*/
export declare function resolveOptionalPeerCapability<Capability>(value:unknown,isCapability:(candidate:unknown)=>candidate is Capability):Capability|null;
/** Narrows an unknown optional-peer value to the sanitizer capability Lyra uses. */
export declare function isHtmlSanitizer(value:unknown):value is HtmlSanitizer;