Adopt airbnb eslint preset

.eslintrc

@@ -4,159 +4,9 @@ env:
   mocha: true
   node: true
 
-# globals:
-  #########################
-  ## Only add globals if you're absolutely certain they need to be globals
-  ##########################
-  # console: true
-
-#########################
-## set to 0 to allow
-## set to 1 to disallow as warning
-## set to 2 to disallow as error
-#########################
 rules:
-  #########################
-  ## Optional Rules
-  #########################
-  # Disallow use of `console`
-  no-console: 2
-
-  # Disallow warning comments
-  no-warning-comments:
-    - 1
-    - terms:
-        - todo
-        - fixme
-      location: anywhere
-
-  # Warns when variables are defined but never used
-  no-unused-vars: 1
-
-  # Enforces comma style (first or last)
-  comma-style:
-    - 2
-    - last
-
-  # Enforces one true `this` variable
-  consistent-this:
+  max-len:
     - 2
-    - self
-  # Allows dangling underscores in identifiers
-  no-underscore-dangle: 2
-
-  # Enforces function expressions to have a name
-  func-names: 0
-
-  # Set maximum depth of nested callbacks
-  max-nested-callbacks:
-    - 1
-    - 3
-
-  #########################
-  ## Core Rules
-  ##########################
-  # Enforces camel case names
-  camelcase: 2
-
-  # Prohibit use of == and != in favor of === and !==
-  eqeqeq: 2
-
-  # Suppresses warnings about == null comparisons
-  no-eq-null: 2
-
-  # No mixing tabs and spaces, with 2 spaces only
-  no-mixed-spaces-and-tabs: 2
-
-  # Prohibits use of a variable before it is defined
-  no-use-before-define: 2
-
-  # Requires capitalized names for constructor functions
-  new-cap: 2
-
-  # Prohibits use of explicitly undeclared variables
-  no-undef: 2
-
-  # Enforces Use Strict at the top of function scope
-  strict:
-    - 2
-    - global
-
-  # Requires variable declarations to be at the top
-  vars-on-top: 2
-
-  # Enforce curly braces around blocks in loops and conditionals
-  curly: 2
-
-  # Prohibits the use of immediate function invocations w/o wrapping in parentheses
-  wrap-iife: 2
-
-  # Prohibits `argument.caller` and `argument.callee`
-  no-caller: 2
-
-  # Requires all `for in` loops to filter object's items
-  guard-for-in: 2
-
-  # Prohibits comparing a variable against itself
-  no-self-compare: 2
+    - 120
 
-  # Prohibits use of `undefined` variable
-  no-undefined: 0
-
-  # Prohibits nested ternaries
-  no-nested-ternary: 2
-
-  # Enforces a space before blocks
-  space-before-blocks:
-    - 2
-    - always
-
-  # Enforces spaces following keywords
-  keyword-spacing:
-    - 2
-    - after: true
-
-  # Enforces quoted property names
-  quote-props:
-    - 2
-    - always
-
-  # Enforces padded blocks
-  padded-blocks:
-    - 1
-    - never
-
-  # Enforce functions as expressions
-  func-style:
-    - 2
-    - expression
-
-  # Require brace style
-  brace-style:
-    - 2
-    - stroustrup
-
-  # Prohibits Yoda conditions
-  yoda:
-    - 2
-    - never
-
-  # Enforce use of single quotation marks for strings.
-  quotes:
-    - 2
-    - single
-
-  # Disallow or enforce spaces inside of curly braces in objects.
-  object-curly-spacing:
-    - 2
-    - always
-
-  # Disallow or enforce spaces inside of brackets.
-  array-bracket-spacing:
-    - 2
-    - never
-
-  # Disallow or enforce spaces inside of computed properties.
-  computed-property-spacing:
-    - 2
-    - never
+extends: "airbnb-base"