/**
 * @fileoverview Resolve a package's main entry point from its
 * `package.json` — shared between plugin discovery (project-local
 * `.runtime/plugins/<domain>/node_modules/`) and tool-package discovery
 * (any installed `opensipTools.kind === 'tool'` package).
 *
 * The two discovery sites previously inlined the same exports-map walk,
 * each with its own `eslint-disable-next-line sonarjs/cognitive-complexity`
 * suppression. Extracting the resolver removes the duplication and keeps
 * each caller small enough to satisfy the rule on its own.
 *
 * Resolution order matches Node's: `exports['.']` (string or condition
 * object — `import` / `default` / `node` selected in that order) →
 * `pkg.main` → `./index.js`. Returns the joined absolute path of the
 * entry, plus the package name from `pkg.name`. Returns `undefined`
 * when `package.json` is missing, malformed, or has no resolvable
 * entry.
 */
export interface PackageEntryResolution {
    /** Package name from `pkg.name`. Falls back to caller-supplied default if absent. */
    readonly name: string;
    /** Absolute path to the resolved entry point. */
    readonly entry: string;
    /** Raw entry path before joining (for callers that want the relative form). */
    readonly rawEntry: string;
}
/**
 * Resolve a package's entry-point from its directory.
 *
 * @param packageDir   Absolute path to the package directory.
 * @param fallbackName Name to use if `pkg.name` is missing — typically
 *                     the directory entry the caller iterated over.
 * @returns The resolved entry plus name, or `undefined` if `package.json`
 *          is absent, malformed, or has no resolvable entry.
 */
export declare function resolvePackageEntryPoint(packageDir: string, fallbackName?: string): PackageEntryResolution | undefined;
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