Added extra check for imports object

Author: pabloerhard

lib/get-exports.js

@@ -50,7 +50,7 @@ function resolvePackageImports (specifier, fromUrl) {
 
           // Look for path inside packageJson
           let resolvedExport
-          if (typeof imports === 'object') {
+          if (imports && typeof imports === 'object') {
             const requireExport = imports.require
             const importExport = imports.import
             // look for the possibility of require and import which is standard for CJS/ESM