wip: xhr proxy can run

tsconfig.json

@@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "target": "ES2015",
+    "module": "ESNext",
+    "removeComments": false,
+    "moduleResolution": "node",
+    "experimentalDecorators": true,
+    "noImplicitAny": true,
+    "allowSyntheticDefaultImports": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "strictNullChecks": true,
+    "sourceMap": true,
+    "baseUrl": ".",
+    "paths": {
+      "@/*": ["./src/*"]
+    },
+    "rootDir": ".",
+    "allowJs": true,
+    "resolveJsonModule": true,
+    "skipLibCheck": true
+  },
+  "exclude": ["node_modules", "dist"],
+  "compileOnSave": false
+}