feat(neuron-ui): add hint for synchronization not started.

Author: Keith-CY

packages/neuron-ui/src/containers/Footer/index.tsx

@@ -31,6 +31,10 @@ export const SyncStatus = ({
     return <Text variant="xSmall">{t('footer.fail-to-fetch-tip-block-number')}</Text>
   }
 
+  if (+syncedBlockNumber < 0) {
+    return <Text variant="xSmall">{t('footer.sync-not-start')}</Text>
+  }
+
   const percentage = +syncedBlockNumber / +tipBlockNumber
 
   return +syncedBlockNumber + bufferBlockNumber < +tipBlockNumber ? (

packages/neuron-ui/src/locales/en.json

@@ -228,7 +228,8 @@
       "save": "Save image"
     },
     "footer": {
-      "fail-to-fetch-tip-block-number": "Cannot fetch tip block number"
+      "fail-to-fetch-tip-block-number": "Cannot fetch tip block number",
+      "sync-not-start": "Synchronization not started yet"
     },
     "common": {
       "or": "or",

packages/neuron-ui/src/locales/zh.json

@@ -228,7 +228,8 @@
       "save": "保存图片"
     },
     "footer": {
-      "fail-to-fetch-tip-block-number": "无法获取最新高度"
+      "fail-to-fetch-tip-block-number": "无法获取最新高度",
+      "sync-not-start": "同步尚未开始"
     },
     "common": {
       "or": "或",