import type { Diagnostic, EsmxDeclaration } from './types';
/** Package facts the resolver needs, read from a package root directory. */
export interface PackageRecord {
    name: string;
    version: string;
    root: string;
    private: boolean;
    dependencies: Record<string, string>;
    peerDependencies: Record<string, string>;
    devDependencies: Record<string, string>;
    declaration: EsmxDeclaration | null;
    diagnostics: Diagnostic[];
}
export interface ReadDeclarationResult extends PackageRecord {
    declaration: EsmxDeclaration;
}
/**
 * Reads a package root's package.json into a PackageRecord, whether or not
 * it carries an `esmx` declaration. Returns null when no package.json can
 * be read.
 */
export declare function readPackageRecord(packageDir: string): PackageRecord | null;
/**
 * Reads a package's `esmx` declaration. Returns null when the package has
 * no `esmx` field (legacy module) or no readable package.json. Schema
 * violations are reported in `diagnostics` with the valid remainder kept.
 */
export declare function readDeclaration(packageDir: string): ReadDeclarationResult | null;