import type { PackageJson, ValidatedPackageJson } from '../types/index.js';
/**
 * (Type-)Checks that the fields `name` and `version` exist, in the
 * sense that their values are a non-empty string.
 *
 * @param packageJson
 *
 * A JSON that represents `package.json`.
 *
 * @example
 *
 * ```ts
 * const packageJson = readPackageJson({ projectRoot });
 *
 * validatePackageJson(packageJson);
 *
 * // Both guaranteed to be `string` (not `undefined`)
 * const { name, version } = packageJson;
 * ```
 */
export declare function validatePackageJson(packageJson: PackageJson): asserts packageJson is ValidatedPackageJson;