Update @metamask/eslint-config from v3 to v4.1.0 (#344)

This update includes the update from `eslint` v6 to v7. In this
release the Node.js-specific rules were broken out into a separate
plugin (`eslint-plugin-node`), which is now also required.

Any broken rules have been temporarily disabled, to be addressed in a
future PR.

.eslintrc.js

@@ -54,6 +54,7 @@ module.exports = {
       },
     ],
 
+    'accessor-pairs': 'off',
     'camelcase': 'off',
     'consistent-return': 'off',
     'default-case': 'off',
@@ -75,6 +76,8 @@ module.exports = {
     'radix': 'off',
     'require-atomic-updates': 'off',
 
+    'node/no-extraneous-require': 'off',
+
     'jest/expect-expect': 'off',
     'jest/no-test-return-statement': 'off',
     'jest/no-truthy-falsy': 'off',

package.json

@@ -58,17 +58,18 @@
     "web3-provider-engine": "^16.0.1"
   },
   "devDependencies": {
-    "@metamask/eslint-config": "^3.0.0",
+    "@metamask/eslint-config": "^4.1.0",
     "@types/fetch-mock": "^7.3.1",
     "@types/jest": "^22.2.3",
     "@types/node": "^10.1.4",
     "@types/sinon": "^4.3.3",
     "@types/web3": "^1.0.6",
     "@typescript-eslint/eslint-plugin": "^4.1.0",
     "@typescript-eslint/parser": "^4.1.0",
-    "eslint": "^6.8.0",
+    "eslint": "^7.19.0",
     "eslint-plugin-import": "^2.20.1",
     "eslint-plugin-jest": "^23.6.0",
+    "eslint-plugin-node": "^11.1.0",
     "ethjs-provider-http": "^0.1.6",
     "fetch-mock": "^9.10.7",
     "jest": "^26.4.2",