possible-errors.js

module.exports = {
  'rules': {
    // disallow trailing commas in object literals
    'comma-dangle': [2, 'never'],
    // disallow assignment in conditional expressions
    'no-cond-assign': [2, 'always'],
    // disallow use of console
    'no-console': 1,
    // disallow use of constant expressions in conditions
    'no-constant-condition': 1,
    // disallow control characters in regular expressions
    'no-control-regex': 2,
    // disallow use of debugger
    'no-debugger': 1,
    // disallow duplicate arguments in functions
    'no-dupe-args': 2,
    // disallow duplicate keys when creating object literals
    'no-dupe-keys': 2,
    // disallow a duplicate case label.
    'no-duplicate-case': 2,
    // disallow the use of empty character classes in regular expressions
    'no-empty-character-class': 2,
    // disallow empty statements
    'no-empty': 2,
    // disallow assigning to the exception in a catch block
    'no-ex-assign': 2,
    // disallow double-negation boolean casts in a boolean context
    'no-extra-boolean-cast': 0,
    // disallow unnecessary parentheses
    'no-extra-parens': [2, 'functions'],
    // disallow unnecessary semicolons
    'no-extra-semi': 2,
    // disallow overwriting functions written as function declarations
    'no-func-assign': 2,
    // disallow function or variable declarations in nested blocks
    'no-inner-declarations': 2,
    // disallow invalid regular expression strings in the RegExp constructor
    'no-invalid-regexp': 2,
    // disallow irregular whitespace outside of strings and comments
    'no-irregular-whitespace': 2,
    // disallow negation of the left operand of an in expression
    'no-negated-in-lhs': 2,
    // disallow the use of object properties of the global object (Math and JSON) as functions
    'no-obj-calls': 2,
    // disallow multiple spaces in a regular expression literal
    'no-regex-spaces': 2,
    // disallow sparse arrays
    'no-sparse-arrays': 2,
    // disallow unreachable statements after a return, throw, continue, or break statement
    'no-unreachable': 2,
    // disallow comparisons with the value NaN
    'use-isnan': 2,
    // ensure JSDoc comments are valid
    'valid-jsdoc': 0,
    // ensure that the results of typeof are compared against a valid string
    'valid-typeof': 2,
    // Avoid code that looks like two expressions but is actually one
    'no-unexpected-multiline': 0
  }
};