258 function readPackage(requestPath) {  argument
259   const jsonPath = path.resolve(requestPath, 'package.json');
306 function tryPackage(requestPath, exts, isMain, originalPath) {  argument
307   const pkg = readPackage(requestPath)?.main;
310     return tryExtensions(path.resolve(requestPath, 'index'), exts, isMain);
313   const filename = path.resolve(requestPath, pkg);
318     actual = tryExtensions(path.resolve(requestPath, 'index'), exts, isMain);
326       err.path = path.resolve(requestPath, 'package.json');
327       err.requestPath = originalPath;
331       const jsonPath = path.resolve(requestPath, 'package.json');
352 function tryFile(requestPath, isMain) {  argument
353   const rc = stat(requestPath);
356     return path.resolve(requestPath);
358   return toRealPath(requestPath);
361 function toRealPath(requestPath) {  argument
362   return fs.realpathSync(requestPath, {