import type { LogFn } from '@aztec/foundation/log';
import { type SemVer } from 'semver';
import type { DependencyChanges } from './common.js';
/**
 * Looks up a package.json file and returns its contents
 * @param projectPath - Path to Nodejs project
 * @returns The parsed package.json
 */
export declare function readPackageJson(projectPath: string): Promise<{
    /** dependencies */
    dependencies?: Record<string, string>;
    /** devDependencies */
    devDependencies?: Record<string, string>;
}>;
/**
 * Queries the npm registry for the latest version of a package
 * @param packageName - The package to query
 * @param distTag - The distribution tag
 * @returns The latest version of the package on that distribution tag
 */
export declare function getNewestVersion(packageName: string, distTag?: string): Promise<SemVer>;
/**
 * Updates a project's \@aztec/* dependencies to the specific version
 * @param projectPath - Path to Nodejs project
 * @param aztecVersion - The version to update to
 * @returns True if the project was updated
 */
export declare function updateAztecDeps(projectPath: string, aztecVersion: SemVer, log: LogFn): Promise<DependencyChanges>;
/**
 * Updates a project's yarn.lock or package-lock.json
 * @param projectPath - Path to Nodejs project
 */
export declare function updateLockfile(projectPath: string, log: LogFn): void;
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