feat: Rule updates for defaults (#4)

* feat: disable func-style enforcment

* feat: set no-shadow to warn

* feat: warn on arrow-callback check

* feat: update no-use-before-define for func-style update

* feat: Allow the use of For ( In / Of )

* feat: Add Jest to env object

Author: joshwiens

rules/es2015.js

@@ -105,7 +105,7 @@ module.exports = {
 
     // require arrow functions as callbacks
     // http://eslint.org/docs/rules/prefer-arrow-callback
-    'prefer-arrow-callback': ['error', {
+    'prefer-arrow-callback': ['warn', {
       allowNamedFunctions: false,
       allowUnboundThis: true,
     }],

rules/node.js

@@ -1,6 +1,7 @@
 module.exports = {
   env: {
     node: true,
+    jest: true,
     mocha: true
   },
 

rules/stylistic-issues.js

@@ -77,7 +77,7 @@ module.exports = {
 
     // enforce the consistent use of either function declarations or expressions
     // http://eslint.org/docs/rules/func-style
-    'func-style': ['error', 'expression'],
+    'func-style': 'off',
 
     // disallow specified identifiers
     // http://eslint.org/docs/rules/id-blacklist
@@ -282,8 +282,6 @@ module.exports = {
     // http://eslint.org/docs/rules/no-restricted-syntax
     'no-restricted-syntax': [
       'error',
-      'ForInStatement',
-      'ForOfStatement',
       'LabeledStatement',
       'WithStatement',
     ],

rules/variables.js

@@ -26,7 +26,7 @@ module.exports = {
 
     // disallow variable declarations from shadowing variables declared in the outer scope
     // http://eslint.org/docs/rules/no-shadow
-    'no-shadow': 'error',
+    'no-shadow': 'warn',
 
     // disallow initializing variables to undefined
     // http://eslint.org/docs/rules/no-undef-init
@@ -46,6 +46,6 @@ module.exports = {
 
     // disallow the use of variables before they are defined
     // http://eslint.org/docs/rules/no-use-before-define
-    'no-use-before-define': 'error'
+    'no-use-before-define': ['error', { functions: false, classes: true, variables: true  }],
   }
 };