chore: update dependencies

Drop eslint-config-airbnb, support eslint@6

closes #729

.eslintrc.yml

@@ -1,7 +1,10 @@
 root: true # ignore config in main folder
 
+parserOptions:
+  ecmaVersion: 6
+  sourceType: module
+
 extends:
-  - airbnb/base
   - prettier
 
 env:
@@ -12,6 +15,6 @@ plugins:
   - prettier
 
 rules:
-  prettier/prettier: ["error", {"trailingComma": "es5", "singleQuote": true}]
-  semi: ["error", "always"]
+  prettier/prettier: ['error', { 'trailingComma': 'es5', 'singleQuote': true }]
+  semi: ['error', 'always']
   global-require: 0

package.json

@@ -37,25 +37,23 @@
     "invariant": "2.2.4"
   },
   "devDependencies": {
-    "colors": "~1.3.0",
-    "coveralls": "~3.0.2",
-    "cz-conventional-changelog": "~2.1.0",
-    "eslint": "5.16.0",
-    "eslint-config-airbnb": "~17.1.0",
-    "eslint-config-prettier": "~5.0.0",
-    "eslint-plugin-import": "~2.17.0",
-    "eslint-plugin-jsx-a11y": "~6.2.2",
+    "babel-eslint": "10.0.2",
+    "colors": "1.3.3",
+    "coveralls": "3.0.5",
+    "cz-conventional-changelog": "~3.0.2",
+    "eslint": "6.1.0",
+    "eslint-config-prettier": "~6.0.0",
     "eslint-plugin-prettier": "~3.1.0",
-    "eslint-plugin-react": "~7.13.0",
+    "marked": "^0.6.0",
     "mocha": "~6.2.0",
-    "nyc": "~14.1.0",
+    "nyc": "14.1.1",
     "prettier": "~1.18.2",
-    "readline-sync": "~1.4.9",
-    "semantic-release": "~15.13.0",
+    "readline-sync": "1.4.10",
+    "semantic-release": "15.13.18",
     "validate-commit-msg": "~2.14.0"
   },
   "peerDependencies": {
-    "eslint": ">= 3.7.0 < 6"
+    "eslint": ">= 3.7.0 < 7"
   },
   "engines": {
     "node": ">=6"

scripts/new-rule.js

@@ -1,4 +1,4 @@
-/* eslint-disable no-console, max-len, import/no-extraneous-dependencies */
+/* eslint-disable no-console, max-len */
 
 const readlineSync = require('readline-sync');
 const colors = require('colors/safe');