fix linting

package.json

@@ -172,6 +172,7 @@
     "core-js": "^3.6.5",
     "deep-equal": "^1.0.1",
     "document-register-element": "1.13.1",
+    "eslint-config-prettier": "^8.5.0",
     "ethereumjs-util": "^7.0.10",
     "ethers": "^5.4.2",
     "ethjs-util": "^0.1.6",

yarn.lock

@@ -9748,6 +9748,11 @@ escodegen@^2.0.0:
   optionalDependencies:
     source-map "~0.6.1"
 
+eslint-config-prettier@^8.5.0:
+  version "8.5.0"
+  resolved "https://registry.yarnpkg.com/eslint-config-prettier/-/eslint-config-prettier-8.5.0.tgz#5a81680ec934beca02c7b1a61cf8ca34b66feab1"
+  integrity sha512-obmWKLUNCnhtQRKc+tmnYuQl0pFU1ibYJQ5BGhTVB08bHe9wC8qUeG7c08dj9XX+AuPj1YSGSQIHl1pnDHZR0Q==
+
 eslint-config-standard@^14.1.1:
   version "14.1.1"
   resolved "https://registry.yarnpkg.com/eslint-config-standard/-/eslint-config-standard-14.1.1.tgz#830a8e44e7aef7de67464979ad06b406026c56ea"