/**
 * hosted-skill-set.ts — the single authoritative derivation of the
 * "hosted metadata skill" set.
 *
 * A hosted metadata skill ships its `package.json` and docs but NOT its `src/`.
 * That set is expressed in three places that can silently drift apart:
 *
 *   1. Each skill's own `package.json` -> `skills.runtime` / `skills.source`.
 *   2. The negated `!skills/{...}/src` glob(s) in the root `package.json` `files`.
  *
 * (1) is AUTHORITATIVE. It lives next to the thing it describes, so it cannot be
 * forgotten when a directory is added, removed, or converted. (2) and (3) are
 * projections of it and are guarded against drift in `hosted-skill-set.test.ts`.
 *
 * Two accessors, deliberately different:
 *
 * THIS REPO now has ZERO hosted skills: every catalog entry ships bundled source
 * or is instruction prose. The guard-facing `requireHostedMetadataSlugs`
 * accessor, and the five guards derived from it, were retired in the change that
 * emptied the set — which is precisely what its own emptiness error demanded.
 * `catalog-runnable.test.ts` now asserts the set stays empty, so re-introducing
 * a hosted skill fails loudly rather than silently.
 *
 * The parsing helpers below remain: `release-guard.ts` still applies them to
 * ARBITRARY packages, where a non-empty hosted set is a legitimate answer, and
 * `release-guard.integration.test.ts` exercises them against synthetic fixtures.
 */
/** Shape of the only part of a skill `package.json` this module reads. */
export interface HostedSkillPackageMarkers {
    skills?: {
        runtime?: unknown;
        source?: unknown;
    };
}
/**
 * The authoritative predicate: does this parsed skill `package.json` declare
 * itself as hosted metadata (implementation lives off-repo)?
 */
export declare function isHostedMetadataPackage(pkg: unknown): boolean;
/** Read a skill directory's `package.json` and apply the authoritative predicate. */
export declare function isHostedMetadataSkillDir(skillDir: string): boolean;
/**
 * Enumerate the hosted metadata slugs under a `skills/` root, sorted.
 * Returns `[]` for this repo, and may legitimately be non-empty for another.
 */
export declare function listHostedMetadataSlugs(skillsRoot: string): string[];
export declare const HOSTED_METADATA_SET_EMPTY_ERROR: string;
/**
 * Extract the set of slugs whose `src/` the root `files` array genuinely
 * excludes from the published package, sorted and de-duplicated.
 *
 * Only negations that survive to the end of the array count: a later entry that
 * re-includes `skills/` discards every exclusion before it, exactly as npm
 * resolves them.
 */
export declare function parseHostedSourceExclusionSlugs(files: readonly string[]): string[];
/**
 * Render the canonical `files` exclusion entry for a slug set, so a drift
 * failure can print the exact line to paste. Emits the bare form for a single
 * slug because the one-element brace form is inert under `npm pack`.
 */
export declare function buildHostedSourceExclusionGlob(slugs: readonly string[]): string;
/** Paths in a packed file list that would ship a hosted skill's implementation source. */
export declare function findHostedSourcePacklistLeaks(packedPaths: readonly string[], hostedSlugs: Iterable<string>): string[];
/** Symmetric difference between two slug sets, for readable drift failures. */
export declare function diffSlugSets(expected: readonly string[], actual: readonly string[]): {
    missing: string[];
    unexpected: string[];
};