import type { ConfigSource, ConfigLoadResult, ResolveConfigOptions } from '../types.js';
/**
 * Configuration source that loads from package.json `b2c` key.
 *
 * This source has the lowest priority (1000) and only provides
 * non-sensitive, project-level defaults.
 *
 * @internal
 */
export declare class PackageJsonSource implements ConfigSource {
    readonly name = "PackageJsonSource";
    readonly priority = 1000;
    load(options: ResolveConfigOptions): Promise<ConfigLoadResult | undefined>;
}