Merge pull request #1196 from minh8023/optional-chaining

add optionalChaining

packages/webpack-uni-mp-loader/lib/main-new.js

@@ -81,6 +81,7 @@ createPage(Page)
     } = traverse(parser.parse(content, {
       sourceType: 'module',
       plugins: [
+        'optionalChaining',
         'typescript',
         ['decorators', {
           decoratorsBeforeExport: true
@@ -140,4 +141,4 @@ createPage(Page)
       callback(err, content)
     })
   }
-}
+}

packages/webpack-uni-mp-loader/lib/script-new.js

@@ -66,6 +66,7 @@ module.exports = function (content, map) {
   } = traverse(parser.parse(content, {
     sourceType: 'module',
     plugins: [
+      'optionalChaining',
       'typescript',
       ['decorators', {
         decoratorsBeforeExport: true
@@ -127,4 +128,4 @@ module.exports = function (content, map) {
   }, err => {
     callback(err, content, map)
   })
-}
+}