Update ruleset for use with ESLint

Author: fractaltheory

javascript/.eslintrc

@@ -12,38 +12,106 @@
         "Adaptive": true
     },
     "rules": {
+        // Enforce === instead of ==; !== instead of !=
         "eqeqeq": 2,
+
+        // Enforce if statement within 'for in'
         "guard-for-in": 2,
+
+        // Disallow overwriting native types like 'Array' or 'Date'
         "no-extend-native": 2,
+
+        // Enforce wrapping immediate invocations in parentheses
         "wrap-iife": 2,
-        "no-use-before-define": 2,
+
+        // Disallow usage of a variable before declaration; ignores functions
+        "no-use-before-define": [2, "nofunc"],
+
+        // Enforce capitalization of constructor functions
         "new-cap": 2,
+
+        // Disallow creation of dense arrays using the Array constructor
         "no-array-constructor": 2,
+
+        // Disallow use of the Object constructor
         "no-new-object": 2,
+
+        // Disallow use of argument.caller and argument.callee
         "no-caller": 2,
+
+        // Disallow empty block statements
         "no-empty": 2,
+
+        // Disallow use of the with statement
         "no-with": 2,
+
+        // Disallow mixed spaces and tabs for indentation
         "no-mixed-spaces-and-tabs": 2,
+
+        // Disallow use of multiline strings
         "no-multi-str": 2,
+
+        // Warn if variables are not named with camelCase
         "camelcase": 1,
+
+        // Disallow trailing whitespace at the end of lines
         "no-trailing-spaces": 2,
+
+        // Disallow spacing before commas; enforce spacing after commas
+        "comma-spacing": [2, { "before": false, "after": true }],
+
+        // Enforce spacing after keywords: if, else, for, while, do, switch, try,
+        // catch, and finally
         "space-after-keywords": 2,
+
+        // Enforce spacing before opening brace of block statements
+        "space-before-blocks": [2, "always"],
+
+        // Enforce spaceing around infix operators: +, -, :, ?
         "space-infix-ops": 2,
+
+        // Enforce spacing around word unary operators: new, delete, typeof, void
+        // Disallow spacing around non-word unary operators: -, +, --, ++, !, !!
+        "space-unary-ops": [2, { "words": true, "nonwords": false }],
+
+        // Disallow declaration of variables that are not used
         "no-unused-vars": 2,
+
+        // Disallow undeclared variables (unless mentioned in /*global ...*/ comment)
         "no-undef": 2,
+
+        // Warn if single newline at end of file is missing
         "eol-last": 1,
-        "strict": false,
-        "quotes": "single",
+
+        // Enforce single quotes for string literals
+        "quotes": [2, "single"],
+
+        // Disallow unnecessary parentheses
         "no-extra-parens": 2,
+
+        // Disallow unnecessary semicolons
         "no-extra-semi": 2,
+
+        // Disallow function or variable declarations in nested blocks
         "no-inner-declarations": 2,
+
+        // Disallows the nesting of blocks more than 5 deep
         "max-depth": [2, "5"],
+
+        // Enforces a maximum of 10 parameters in a function declaration
         "max-params": [2, "10"],
+
+        // Enforces a maximum of 25 statements within a single function
         "max-statements": [2, "25"],
-        "max-len": [2, "1000"],
-        "complexity": false,
+
+        // Enforces a maximum of 100 characters in a single line; adjusts tabs
+        // to equal 4 characters
+        "max-len": [2, "100", "4"],
+
+        // Enforces semicolons at the end of statements
         "semi": 2,
-        "no-unused-expressions": 2,
+
+        // Disallow function definitions of the form 'var f = function() {'
         "func-style": [2, "declaration"]
     }
-}
+}