safari bug fixes

components/Editor.js

@@ -81,7 +81,7 @@ class Editor extends React.Component {
     if (
       navigator.userAgent.indexOf('Safari') !== -1 &&
       navigator.userAgent.indexOf('Chrome') === -1 &&
-      format === 'png'
+      format !== 'svg'
     ) {
       const encodedState = serializeState(this.state)
       return api.image(encodedState)

lib/routing.js

@@ -50,10 +50,9 @@ const reverseMappings = mappings.map(mapping =>
 )
 
 export const serializeState = state => {
-  const stateString = JSON.stringify(state)
+  const stateString = encodeURIComponent(JSON.stringify(state))
 
-  return encodeURIComponent(
+  return encodeURIComponent(typeof window !== 'undefined'
-    typeof window !== 'undefined'
     ? btoa(stateString)
     : Buffer.from(stateString).toString('base64')
   )