use a fixed import for canvg

dist/editor/extensions/ext-locale/foreignobject/en.js

@@ -1,27 +0,0 @@
-var en = {
-  name: 'foreignObject',
-  buttons: [
-    {
-      title: 'Foreign Object Tool'
-    },
-    {
-      title: 'Edit ForeignObject Content'
-    }
-  ],
-  contextTools: [
-    {
-      title: "Change foreignObject's width",
-      label: 'w'
-    },
-    {
-      title: "Change foreignObject's height",
-      label: 'h'
-    },
-    {
-      title: "Change foreignObject's font size",
-      label: 'font-size'
-    }
-  ]
-};
-
-export default en;

dist/editor/extensions/ext-locale/foreignobject/zh_CN.js

@@ -1,27 +0,0 @@
-var zhCN = {
-  name: '外部对象',
-  buttons: [
-    {
-      title: '外部对象工具'
-    },
-    {
-      title: '编辑外部对象内容'
-    }
-  ],
-  contextTools: [
-    {
-      title: '改变外部对象宽度',
-      label: 'w'
-    },
-    {
-      title: '改变外部对象高度',
-      label: 'h'
-    },
-    {
-      title: '改变外部对象文字大小',
-      label: '文字大小'
-    }
-  ]
-};
-
-export default zhCN;