/**
 * Resolve effective targets from layered sources.
 *
 * Priority (highest to lowest): plugin.json → marketplace.json → config.yaml.
 * Absence at all layers means no declaration — not "assumed compatible."
 */
import type { Target } from './types.js';
/**
 * Walk upward from `startingDir` looking for a `.claude-plugin/marketplace.json`.
 *
 * Handles both the canonical layout (marketplace is the parent of the plugin
 * dir) and deeper layouts where the marketplace lives further up the tree.
 *
 * Returns `undefined` if no marketplace.json is found within the walk bounds,
 * or if the found manifest is unreadable / invalid JSON / lacks
 * `defaults.targets`. Silent best-effort lookup — never throws, never logs.
 */
export declare function readMarketplaceDefaultTargets(startingDir: string): Promise<Target[] | undefined>;
/**
 * Resolve effective targets. Plugin overrides marketplace overrides config.
 * Explicit empty array at any layer means "no runtimes" — not "fall back."
 */
export declare function resolveEffectiveTargets(params: {
    configTargets: Target[] | undefined;
    pluginTargets: Target[] | undefined;
    marketplaceTargets: Target[] | undefined;
}): Target[] | undefined;
//# sourceMappingURL=marketplace-defaults.d.ts.map