pnpm add @pnpm/resolving.local-resolver

'use strict'
const resolveFromLocal = require('@pnpm/resolving.local-resolver').default

resolveFromLocal({bareSpecifier: './example-package'}, {prefix: process.cwd()})
  .then(resolveResult => console.log(resolveResult))
//> { id: 'link:example-package',
//    normalizedBareSpecifier: 'link:example-package',
//    package:
//     { name: 'foo',
//       version: '1.0.0',
//       readme: '# foo\n',
//       readmeFilename: 'README.md',
//       description: '',
//       _id: '[email protected]' },
//    resolution: { directory: 'example-package', type: 'directory' }
//    resolvedVia: 'local-filesystem' }