add acorn as peer dep

package-lock.json

@@ -685,9 +685,9 @@
             }
         },
         "acorn": {
-            "version": "7.4.1",
-            "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.4.1.tgz",
-            "integrity": "sha512-nQyp0o1/mNdbTO1PO6kHkwSrmgZ0MT/jCCpNiwbUjGoRN4dlBhqJtoQuCnEOKzgTVwg0ZWiCoQy6SxMebQVh8A==",
+            "version": "8.5.0",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.5.0.tgz",
+            "integrity": "sha512-yXbYeFy+jUuYd3/CDcg2NkIYE991XYX/bje7LmjJigUciaeO1JR4XxXgCIV1/Zc/dRuFEyw1L0pbA+qynJkW5Q==",
             "dev": true
         },
         "acorn-import-assertions": {
@@ -2154,6 +2154,12 @@
                 "eslint-visitor-keys": "^1.3.0"
             },
             "dependencies": {
+                "acorn": {
+                    "version": "7.4.1",
+                    "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.4.1.tgz",
+                    "integrity": "sha512-nQyp0o1/mNdbTO1PO6kHkwSrmgZ0MT/jCCpNiwbUjGoRN4dlBhqJtoQuCnEOKzgTVwg0ZWiCoQy6SxMebQVh8A==",
+                    "dev": true
+                },
                 "eslint-visitor-keys": {
                     "version": "1.3.0",
                     "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-1.3.0.tgz",

package.json

@@ -41,6 +41,7 @@
         "@types/react-dom": "^17.0.9",
         "@typescript-eslint/eslint-plugin": "^4.32.0",
         "@typescript-eslint/parser": "^4.32.0",
+        "acorn": "^8.5.0",
         "buffer": "^6.0.3",
         "concurrently": "^6.3.0",
         "cpx2": "^4.0.0",