fix: test coverage

test/unit/get-webpack-conf.js

@@ -26,6 +26,7 @@ const webpackConfig = {
       }
     })
   ],
+  stats: 'errors-only',
   resolve: {
     modules: [
       path.resolve(process.cwd(), 'node_modules'),

test/unit/index.js

@@ -3,9 +3,3 @@ require('packages/vant-css/src/index.css');
 // require all test files (files that ends with .spec.js)
 const testsReq = require.context('./specs', true, /\.spec$/);
 testsReq.keys().forEach(testsReq);
-
-// require all src files except main.js for coverage.
-// you can also change this to match only the subset of files that
-// you want coverage for.
-const srcReq = require.context('../../src', true, /^\.\/(?!main(\.js)?$)/);
-srcReq.keys().forEach(srcReq);