import { type SiteIcon, type SiteDefaults } from "../model/SiteConfig.js";
import { parseMimeAccept } from "../model/MediaMimeAccept.js";
/**
 * Synchronous fail-fast for `siteDefaults`. Throws
 * `InvalidSiteDefaultsError` when any declared locale fails BCP 47
 * canonicalization. Throws `InvalidMediaPurposesError` when any
 * declared `media.purposes` entry's `name` fails the slug pattern,
 * its `required` mime list is empty, or its `maxBytes` map is
 * missing entries for any required mime. Throws `InvalidSiteIconsError`
 * when a declared site icon cannot be served safely. Brand / title /
 * description / origin are not validated — only the fields whose values
 * carry semantics the runtime depends on.
 *
 * Lives in spec (not runtime) because it's pure validation against
 * the `SiteConfig` contract — no env, no DB. Runtime calls this during
 * storage preparation so a typo in `siteDefaults` rejects deployment
 * before the runtime accepts traffic.
 */
export declare class InvalidSiteDefaultsError extends Error {
    readonly invalidLocales: ReadonlyArray<string>;
    constructor(invalidLocales: ReadonlyArray<string>);
}
export interface MediaPurposeIssue {
    readonly name: string;
    readonly reason: "invalid-slug" | "empty-required" | "empty-required-slot" | "overlapping-slot-mimes" | "maxBytes-missing-mime" | "maxBytes-non-positive";
    readonly detail?: string;
}
export declare class InvalidMediaPurposesError extends Error {
    readonly issues: ReadonlyArray<MediaPurposeIssue>;
    constructor(issues: ReadonlyArray<MediaPurposeIssue>);
}
export declare class InvalidSiteIconsError extends Error {
    readonly invalidIcons: ReadonlyArray<SiteIcon>;
    constructor(invalidIcons: ReadonlyArray<SiteIcon>);
}
export declare function assertSiteDefaultsCanonical(defaults: SiteDefaults | undefined): void;
export { parseMimeAccept };
//# sourceMappingURL=SiteDefaultsValidator.d.ts.map