feat: improve output (#63)

* docs: update readme

* feat: only display scores when they exist

Author: adamhenson

README.md

@@ -188,7 +188,7 @@ import { lighthouseCheck } from '@foo-software/lighthouse-check';
 
 (async () => {
   const response = await lighthouseCheck({
-    slackWebhookUrl: 'https://www.my-slack-webhook-url.com'
+    slackWebhookUrl: 'https://www.my-slack-webhook-url.com',
     urls: [
       'https://www.foo.software/lighthouse',
       'https://www.foo.software/contact'

src/localLighthouse.js

@@ -15,10 +15,9 @@ const getScoresFromFloat = scores =>
   Object.keys(scores).reduce(
     (accumulator, current) => ({
       ...accumulator,
-      [current]:
-        typeof scores[current] !== 'number'
-          ? 0
-          : Math.floor(scores[current] * 100)
+      ...(typeof scores[current] === 'number' && {
+        [current]: Math.floor(scores[current] * 100)
+      })
     }),
     {}
   );