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Following this style guide will ensure your code has a level of clarity that makes reading and maintaining your code easier for anyone who has to work on it. This enforces our immutable rule.
Syntactic sugar.
Lexical declarations are visible in the entire Why? Per the eslint documentation, unary increment and decrement statements are subject to automatic semicolon insertion and can cause silent errors with incrementing or decrementing values within an application.
This makes sure you have a single default export.Why? Our code must be as clean and easy to read as possible.
Most of the rules also apply to TypeScript, but of course it doesn't cover specific TypeScript language features. the following conditions:The above copyright notice and this permission notice shall be
They allow you to define all the properties of an object in one place.Why? It derives its basics from the Java programming convention guide, you can check out the java guide at – This style guide smells a lot like Dojo and you might want to make necessary changes to make it a standard for your team of developers working on non Dojo projects.
'// lexical name distinguished from the variable-referenced invocation(s)// Double bad: if opts is falsy it'll be set to an object which may// be what you want but it can introduce subtle bugs.// good - static methods aren't expected to use this// The let keyword only applies to variable a; variables b and c become// Write-only variables are not considered as used.// A read for a modification of itself is not considered as used.// 'type' is ignored even if unused because it has a rest property sibling.// This is a form of extracting an object that omits the specified keys.// 'coords' is now the 'data' object without its 'type' property.// an array (even an empty one) is an object, objects will evaluate to true// TODO: total should be configurable by an options param// good (note that a comma must not appear after a "rest" element)// good (note that a comma must not appear after a "rest" element)// bad - returns `undefined` instead of the value on the next line - always happens when `return` is on a line by itself because of ASI!// good, in environments where WeakMaps are available// see https://kangax.github.io/compat-table/es6/#test-WeakMap// camelCase export/import/directory name/implicit "index"// ^ supports both insideDirectory.js and insideDirectory/index.js'should not be unnecessarily uppercased within a file'// bad - unnecessarily uppercases key while adding no semantic value
It is also more expressive to mutate your values with statements like Why?
Don’t forget to explicitly name the expression, regardless of whether or not the name is inferred from the containing variable (which is often the case in modern browsers or when using compilers such as Babel).
This style guide does only the minimal and doesn’t go deep into your JavaScript to pin point performance related aspects or do test code review.Felix Geisendorfer has come up with this style guide by picking up the most commonly used coding practices of Node.js community and adding additional bits as required. You can get it at – They say, it is a bit unconventional but carefully crafted style guide to reduce the visual clutter. The following command will add ESLint and the Airbnb JavaScript Style Guide config to your global npm modules: The best thing about Google is that they share what they do. When JavaScript encounters a line break without a semicolon, it uses a set of rules called Why?
Do share with the community your javascript coding standard via comments!! Backslashes harm readability, thus they should only be present when necessary.Why?
This guide is available in other languages too.
Note that in a world with modules everywhere, you almost never need an IIFE.Why?