chore: improve tests coverage

lib/builder/builder.js

@@ -332,8 +332,8 @@ export default class Builder {
           options: this.options.loadingIndicator
         })
       } else {
-        // eslint-disable-next-line no-console
-        console.error(`Could not fetch loading indicator: ${this.options.loadingIndicator.name}`)
+        /* istanbul ignore next */
+        console.error(`Could not fetch loading indicator: ${this.options.loadingIndicator.name}`) // eslint-disable-line no-console
       }
     }
 
@@ -365,6 +365,7 @@ export default class Builder {
           dst
         }))
       } catch (err) {
+        /* istanbul ignore next */
         throw new Error(`Could not compile template ${src}: ${err.message}`)
       }
       const path = r(this.options.buildDir, dst)

lib/common/options.js

@@ -46,6 +46,7 @@ Options.from = function (_options) {
   if (!Array.isArray(options.modulesDir)) {
     options.modulesDir = [options.modulesDir]
   }
+  /* istanbul ignore if */
   if (!options.modulesDir.length) {
     options.modulesDir = ['node_modules']
   }
@@ -157,6 +158,7 @@ Options.from = function (_options) {
   _.defaultsDeep(options, modePreset)
 
   // If no server-side rendering, add appear true transition
+  /* istanbul ignore if */
   if (options.render.ssr === false && options.transition) {
     options.transition.appear = true
   }

test/fixtures/with-config/plugins/test.js

@@ -1 +1,4 @@
 // Custom plugin
+
+// eslint-disable-next-line no-console
+console.log('Test plugin!')