fix break change of babel 7.0.0-beta.52

tools/babel-preset.js

@@ -16,7 +16,9 @@ const plugins = [
   '@babel/plugin-proposal-export-default-from',
   '@babel/plugin-proposal-nullish-coalescing-operator',
   '@babel/plugin-proposal-optional-chaining',
-  '@babel/plugin-proposal-pipeline-operator',
+  ['@babel/plugin-proposal-pipeline-operator', {
+    proposal: 'minimal',
+  }],
   '@babel/plugin-proposal-do-expressions',
   '@babel/plugin-proposal-function-bind',
   'lodash',