reduce payload sent for storage

lib/api.js

@@ -1,8 +1,9 @@
 import axios from 'axios'
 import debounce from 'lodash.debounce'
+import omitBy from 'lodash.omitby'
 import ms from 'ms'
 
-import { DEFAULT_CODE } from './constants'
+import { DEFAULT_CODE, DEFAULT_SETTINGS } from './constants'
 
 import { fileToDataURL } from './util'
 
@@ -82,11 +83,18 @@ function getSnippet(uid, { host } = {}) {
     })
 }
 
+function isNotDefaultSetting(v, k) {
+  return v === DEFAULT_SETTINGS[k] || !Object.prototype.hasOwnProperty.call(DEFAULT_SETTINGS, k)
+}
+
 function updateSnippet(uid, state) {
+  const sanitized = omitBy(state, isNotDefaultSetting)
+
   const data = {
-    ...state,
+    ...sanitized,
     code: state.code != null ? state.code : DEFAULT_CODE
   }
+
   if (uid) {
     return client
       .patch(`/snippets/${uid}`, data)