update some more linting rules

Author: hawkrives

.eslintrc.yaml

@@ -81,12 +81,9 @@ rules:
     - reservedFirst: true
       ignoreCase: true
       callbacksLast: true
-  react/no-did-mount-set-state: warn
-  react/no-did-update-set-state: warn
   react/no-multi-comp: off  # prevent multiple component definition per file
-  react/no-string-refs: error
-  react/no-unescaped-entities: off
-  react/no-unknown-property: warn
+  react/no-redundant-should-component-update: warn
+  react/no-typos: error
   react/prop-types: off
   react/self-closing-comp: warn  # prevent extra closing tags for components without children
   react/sort-comp:
@@ -102,9 +99,8 @@ rules:
   react/jsx-boolean-value: [error, always]
 
   # flow rules
-  flowtype/define-flow-type: warn
+  flowtype/no-dupe-keys: error
   flowtype/use-flow-type: error
-  flowtype/valid-syntax: error
 
   # react-native rules
   react-native/no-unused-styles: warn