"use strict"; module.exports = { "rules": { // Braces only needed for multi-line arrow function blocks // "arrow-body-style": ["error", "as-needed"], // Require spacing around => // "arrow-spacing": "error", // Always require spacing around a single line block // "block-spacing": "warn", // No newline before open brace for a block "brace-style": "error", // No space before always a space after a comma "comma-spacing": ["error", {"before": false, "after": true}], // Commas at the end of the line not the start // "comma-style": "error", // Don't require spaces around computed properties // "computed-property-spacing": ["error", "never"], // Functions must always return something or nothing "consistent-return": "error", // Require braces around blocks that start a new line // Note that this rule is likely to be overridden on a per-directory basis // very frequently. // "curly": ["error", "multi-line"], // Always require a trailing EOL "eol-last": "error", // Require function* name() // "generator-star-spacing": ["error", {"before": false, "after": true}], // Two space indent "indent": ["error", 2, { "SwitchCase": 1 }], // Space after colon not before in property declarations "key-spacing": ["error", { "beforeColon": false, "afterColon": true, "mode": "minimum" }], // Unix linebreaks "linebreak-style": ["error", "unix"], // Always require parenthesis for new calls "new-parens": "error", // Use [] instead of Array() // "no-array-constructor": "error", // No duplicate arguments in function declarations "no-dupe-args": "error", // No duplicate keys in object declarations "no-dupe-keys": "error", // No duplicate cases in switch statements "no-duplicate-case": "error", // No labels "no-labels": "error", // If an if block ends with a return no need for an else block "no-else-return": "error", // No empty statements "no-empty": "error", // No empty character classes in regex "no-empty-character-class": "error", // Disallow empty destructuring "no-empty-pattern": "error", // No assiging to exception variable // "no-ex-assign": "error", // No using !! where casting to boolean is already happening // "no-extra-boolean-cast": "error", // No double semicolon "no-extra-semi": "error", // No overwriting defined functions "no-func-assign": "error", // Declarations in Program or Function Body "no-inner-declarations": "error", // No invalid regular expresions "no-invalid-regexp": "error", // No odd whitespace characters "no-irregular-whitespace": "error", // No single if block inside an else block "no-lonely-if": "error", // No mixing spaces and tabs in indent "no-mixed-spaces-and-tabs": ["error", "smart-tabs"], // No unnecessary spacing "no-multi-spaces": ["error", { exceptions: { "AssignmentExpression": true, "VariableDeclarator": true, "ArrayExpression": true, "ObjectExpression": true } }], // No reassigning native JS objects "no-native-reassign": "error", // Nested ternary statements are confusing "no-nested-ternary": "error", // Use {} instead of new Object() // "no-new-object": "error", // No Math() or JSON() "no-obj-calls": "error", // No octal literals "no-octal": "error", // No redeclaring variables "no-redeclare": "error", // No unnecessary comparisons "no-self-compare": "error", // No declaring variables from an outer scope "no-shadow": "error", // No declaring variables that hide things like arguments "no-shadow-restricted-names": "error", // No spaces between function name and parentheses "no-spaced-func": "error", // No trailing whitespace "no-trailing-spaces": "error", // No using undeclared variables // "no-undef": "error", // Error on newline where a semicolon is needed "no-unexpected-multiline": "error", // No unreachable statements "no-unreachable": "error", // No expressions where a statement is expected // "no-unused-expressions": "error", // No declaring variables that are never used "no-unused-vars": ["error", {"vars": "all", "args": "none"}], // No using variables before defined // "no-use-before-define": ["error", "nofunc"], // No using with "no-with": "error", // Always require semicolon at end of statement "semi": ["error", "always"], // Require space after keywords "keyword-spacing": "error", // Require space before blocks "space-before-blocks": "error", // Never use spaces before function parentheses // "space-before-function-paren": ["error", { "anonymous": "always", "named": "never" }], // Require spaces before finally, catch, etc. // "space-before-keywords": ["error", "always"], // No space padding in parentheses // "space-in-parens": ["error", "never"], // Require spaces around operators // "space-infix-ops": "error", // Require spaces after return, throw and case // "space-return-throw-case": "error", // ++ and -- should not need spacing // "space-unary-ops": ["error", { "words": true, "nonwords": false }], // No comparisons to NaN "use-isnan": "error", // Only check typeof against valid results "valid-typeof": "error", }, }