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JSHint Configuration, Strict Edition
// --------------------------------------------------------------------
// JSHint Configuration, Strict Edition
// --------------------------------------------------------------------
// This is a options template for [JSHint][1], using [JSHint example][2]
// and [Ory Band's example][3] as basis and setting config values to
// be most strict:
// * set all enforcing options to true
// * set all relaxing options to false
// * set all environment options to false, except the browser value
// * set all JSLint legacy options to false
// [1]:
// [2]:
// [3]:
// @author
// @license
// == Enforcing Options ===============================================
// These options tell JSHint to be more strict towards your code. Use
// them if you want to allow only a safe subset of JavaScript, very
// useful when your codebase is shared with a big number of developers
// with different skill levels.
"bitwise" : true, // Prohibit bitwise operators (&, |, ^, etc.).
"curly" : true, // Require {} for every new block or scope.
"eqeqeq" : true, // Require triple equals i.e. `===`.
"forin" : true, // Tolerate `for in` loops without `hasOwnPrototype`.
"immed" : true, // Require immediate invocations to be wrapped in parens e.g. `( function(){}() );`
"latedef" : true, // Prohibit variable use before definition.
"newcap" : true, // Require capitalization of all constructor functions e.g. `new F()`.
"noarg" : true, // Prohibit use of `arguments.caller` and `arguments.callee`.
"noempty" : true, // Prohibit use of empty blocks.
"nonew" : true, // Prohibit use of constructors for side-effects.
"plusplus" : true, // Prohibit use of `++` & `--`.
"regexp" : true, // Prohibit `.` and `[^...]` in regular expressions.
"undef" : true, // Require all non-global variables be declared before they are used.
"strict" : true, // Require `use strict` pragma in every file.
"trailing" : true, // Prohibit trailing whitespaces.
// == Relaxing Options ================================================
// These options allow you to suppress certain types of warnings. Use
// them only if you are absolutely positive that you know what you are
// doing.
"asi" : false, // Tolerate Automatic Semicolon Insertion (no semicolons).
"boss" : false, // Tolerate assignments inside if, for & while. Usually conditions & loops are for comparison, not assignments.
"debug" : false, // Allow debugger statements e.g. browser breakpoints.
"eqnull" : false, // Tolerate use of `== null`.
"es5" : false, // Allow EcmaScript 5 syntax.
"esnext" : false, // Allow specific features such as `const` and `let`.
"evil" : false, // Tolerate use of `eval`.
"expr" : false, // Tolerate `ExpressionStatement` as Programs.
"funcscope" : false, // Tolerate declarations of variables inside of control structures while accessing them later from the outside.
"globalstrict" : false, // Allow global "use strict" (also enables 'strict').
"iterator" : false, // Allow usage of __iterator__ property.
"lastsemic" : false, // Tolerat missing semicolons when the it is omitted for the last statement in a one-line block.
"laxbreak" : false, // Tolerate unsafe line breaks e.g. `return [\n] x` without semicolons.
"laxcomma" : false, // Suppress warnings about comma-first coding style.
"loopfunc" : false, // Allow functions to be defined within loops.
"multistr" : false, // Tolerate multi-line strings.
"onecase" : false, // Tolerate switches with just one case.
"proto" : false, // Tolerate __proto__ property. This property is deprecated.
"regexdash" : false, // Tolerate unescaped last dash i.e. `[-...]`.
"scripturl" : false, // Tolerate script-targeted URLs.
"smarttabs" : false, // Tolerate mixed tabs and spaces when the latter are used for alignmnent only.
"shadow" : false, // Allows re-define variables later in code e.g. `var x=1; x=2;`.
"sub" : false, // Tolerate all forms of subscript notation besides dot notation e.g. `dict['key']` instead of `dict.key`.
"supernew" : false, // Tolerate `new function () { ... };` and `new Object;`.
"validthis" : false, // Tolerate strict violations when the code is running in strict mode and you use this in a non-constructor function.
// == Environments ====================================================
// These options pre-define global variables that are exposed by
// popular JavaScript libraries and runtime environments—such as
// browser or node.js.
"browser" : true, // Standard browser globals e.g. `window`, `document`.
"couch" : false, // Enable globals exposed by CouchDB.
"devel" : false, // Allow development statements e.g. `console.log();`.
"dojo" : false, // Enable globals exposed by Dojo Toolkit.
"jquery" : false, // Enable globals exposed by jQuery JavaScript library.
"mootools" : false, // Enable globals exposed by MooTools JavaScript framework.
"node" : false, // Enable globals available when code is running inside of the NodeJS runtime environment.
"nonstandard" : false, // Define non-standard but widely adopted globals such as escape and unescape.
"prototypejs" : false, // Enable globals exposed by Prototype JavaScript framework.
"rhino" : false, // Enable globals available when your code is running inside of the Rhino runtime environment.
"wsh" : false, // Enable globals available when your code is running as a script for the Windows Script Host.
// == JSLint Legacy ===================================================
// These options are legacy from JSLint. Aside from bug fixes they will
// not be improved in any way and might be removed at any point.
"nomen" : false, // Prohibit use of initial or trailing underbars in names.
"onevar" : false, // Allow only one `var` statement per function.
"passfail" : false, // Stop on first error.
"white" : false, // Check against strict whitespace and indentation rules.
// == Undocumented Options ============================================
// While I've found these options in [example1][2] and [example2][3]
// they are not described in the [JSHint Options documentation][4].
// [4]:
"maxerr" : 100, // Maximum errors before stopping.
"predef" : [ // Extra globals.
"indent" : 4 // Specify indentation spacing

fabslab commented Jun 13, 2013

"forin" : true, // Tolerate for in loops without hasOwnPrototype.
Won't this make it so you have to have the hasOwnProperty check?

Cool Gist! Thanks!

But I think that some additional options should be included as well (but I don't know where exactly to put them):

  • maxparams - limit the number of parameters a function receives;
  • maxlen - to avoid using long lines. I don't remember the exact number though.

And maybe:

  • maxdepth - to avoid deep nesting. Since it counts from the beginning of the file (and we might have modules and classes with functions), it should probably be set to 6 or even 7. But 6 and 7 are too much if you only have functions. Also doing chaining in jQuery could also fire a warning.
  • maxstatements - avoid having long functions (it's better to break them into smaller pieces). Again it could still fire an error if you have a module or a class. I've heard that the functions should be visible within a single screen (no scrolling!), so it should be about 30 or 40.

And what about 'worker' and 'yui' in Environments? Are there reasons you haven't included them?

Can you add "es3": true, for detecting extra comma?

btw. thank you for this, great work :)

Came across this file a little while ago and have updated it! The new version can be found here:

sebs commented Jun 15, 2017

Awesome stuff, I liked especially the removing of all comments process, I can read the docs myself

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