fix: raise config error issue for nested presets

lib/config/presets.js

@@ -28,8 +28,6 @@ async function resolveConfigPresets(inputConfig, existingPresets = []) {
         try {
           fetchedPreset = await getPreset(preset);
         } catch (err) {
-          // istanbul ignore else
-          if (existingPresets.length === 0) {
           const error = new Error('config-validation');
           if (err.message === 'dep not found') {
             error.validationError = `Cannot find preset's package (${preset})`;
@@ -44,12 +42,13 @@ async function resolveConfigPresets(inputConfig, existingPresets = []) {
               throw err;
             }
           }
+          // istanbul ignore if
+          if (existingPresets.length) {
+            error.validationError +=
+              '. Note: this is a *nested* preset so please contact the preset author if you are unable to fix it yourself.';
+          }
           logger.info('Throwing preset error');
           throw error;
-          } else {
-            logger.warn({ preset }, `Cannot find nested preset`);
-            fetchedPreset = {};
-          }
         }
         const presetConfig = await resolveConfigPresets(
           fetchedPreset,