chore(build): set rollup watching path

Author: cotes2020

rollup.config.js

@@ -16,6 +16,9 @@ function build(filename) {
       name: 'Chirpy',
       sourcemap: !isProd
     },
+    watch: {
+      include: `${JS_SRC}/**`
+    },
     plugins: [
       babel({
         babelHelpers: 'bundled',