perf: use importHelpers: true in tsconfig.json

yyx990803 · yyx990803 · commit 60f0a0afbb93 · 2018-05-30T13:39:18.000-04:00
diff --git a/packages/@vue/cli-plugin-typescript/generator/template/tsconfig.json b/packages/@vue/cli-plugin-typescript/generator/template/tsconfig.json
@@ -4,6 +4,7 @@
     "module": "esnext",
     "strict": true,
     "jsx": "preserve",
+    "importHelpers": true,
     "moduleResolution": "node",
     <%_ if (options.classComponent) { _%>
     "experimentalDecorators": true,
