Update npm packages

.eslintrc.base.js

@@ -44,6 +44,7 @@ module.exports = {
     // Force a conflict with Prettier in test-lint/standard.js.
     "standard/computed-property-even-spacing": ["error", "even"],
     "unicorn/filename-case": "off",
+    "unicorn/prefer-flat-map": "off",
     "unicorn/prevent-abbreviations": "off",
     // Force a conflict with Prettier in test-lint/babel.js.
     "object-curly-spacing": "off",

README.md

@@ -780,17 +780,17 @@ You can also supply a custom message if you want:
 
 eslint-config-prettier has been tested with:
 
-- ESLint 6.0.1
+- ESLint 6.2.0
   - eslint-config-prettier 5.1.0 and older were tested with ESLint 5.x
   - eslint-config-prettier 2.10.0 and older were tested with ESLint 4.x
   - eslint-config-prettier 2.1.1 and older were tested with ESLint 3.x
 - prettier 1.18.2
-- @typescript-eslint/eslint-plugin 1.11.0
+- @typescript-eslint/eslint-plugin 2.0.0
 - eslint-plugin-babel 5.3.0
-- eslint-plugin-flowtype 3.11.1
-- eslint-plugin-react 7.14.2
+- eslint-plugin-flowtype 4.2.0
+- eslint-plugin-react 7.14.3
 - eslint-plugin-standard 4.0.0
-- eslint-plugin-unicorn 9.1.1
+- eslint-plugin-unicorn 10.0.0
 - eslint-plugin-vue 5.2.3
 
 Have new rules been added since those versions? Have we missed any rules? Is