fix: rollup config

Author: hunterliu1003

package.json

@@ -49,7 +49,7 @@
     "lint-staged": "^10.5.4",
     "lodash.isequal": "^4.5.0",
     "prettier": "^1.19.1",
-    "rollup": "^2.51.0",
+    "rollup": "^2.52.3",
     "rollup-plugin-cleanup": "^3.1.1",
     "rollup-plugin-postcss": "^3.1.8",
     "rollup-plugin-terser": "^7.0.2",

rollup.config.js

@@ -34,6 +34,7 @@ export default {
       format: 'umd',
       name: 'VueFinalModal',
       sourcemap: true,
+      exports: 'named',
       globals: {
         vue: 'Vue'
       }

yarn.lock

@@ -7244,7 +7244,7 @@ rollup-pluginutils@^2.8.2:
   dependencies:
     estree-walker "^0.6.1"
 
-rollup@^2.51.0:
+rollup@^2.52.3:
   version "2.52.8"
   resolved "https://registry.yarnpkg.com/rollup/-/rollup-2.52.8.tgz#b6462f9c16ffe8995b9a2b313f2e4247fa75e4d9"
   integrity sha512-IjAB0C6KK5/lvqzJWAzsvOik+jV5Bt907QdkQ/gDP4j+R9KYNI1tjqdxiPitGPVrWC21Mf/ucXgowUjN/VemaQ==