chore: add dependencies

package-lock.json

@@ -326,6 +326,12 @@
       "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==",
       "dev": true
     },
+    "acorn": {
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
+      "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==",
+      "dev": true
+    },
     "ajv": {
       "version": "6.11.0",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.11.0.tgz",
@@ -2973,6 +2979,17 @@
         "glob": "^7.1.3"
       }
     },
+    "rollup": {
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.32.0.tgz",
+      "integrity": "sha512-ab2tF5pdDqm2zuI8j02ceyrJSScl9V2C24FgWQ1v1kTFTu1UrG5H0hpP++mDZlEFyZX4k0chtGEHU2i+pAzBgA==",
+      "dev": true,
+      "requires": {
+        "@types/estree": "*",
+        "@types/node": "*",
+        "acorn": "^7.1.0"
+      }
+    },
     "rollup-plugin-terser": {
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/rollup-plugin-terser/-/rollup-plugin-terser-5.2.0.tgz",

package.json

@@ -39,6 +39,7 @@
     "@rollup/plugin-commonjs": "^11.0.2",
     "@rollup/plugin-node-resolve": "^7.1.1",
     "node-sass": "^4.13.1",
+    "rollup": "^1.32.0",
     "rollup-plugin-terser": "^5.2.0",
     "stylelint": "^13.0.0",
     "stylelint-config-recommended-scss": "^4.1.0",