Table Of Contents
What are Linters?
Linter is a name derived from a C source code analysis tool known as "lint". This utility was developed by Bell Labs' computer scientist Stephen C. Johnson in 1978.
- Writing code.
- Compiling it.
- Use linting software to analyze.
- Review the bugs.
- Fix the bugs and make code changes.
- As soon as the code is clean, link the modules.
- Then imply the best linter to analyze it again.
- Manually review the code.
Features of Linting
- Errors are less likely to occur in production. By using best linters, code problems can be diagnosed and fixed for say, code smells. Consequently, fewer defects are introduced into production.
- Code quality can be measured objectively. Code quality discussions often devolve into subjectivity. By using best linters, you can assess the quality of your code objectively and systematically.
- Improved security and reliability of code. The performance and safety of source code are not considered by all best linters, but there are some that do.
Although linting software solutions can help you prevent bugs in software, they can also be beneficial in detecting or linting errors during debugging.
JS Linting tools
The project began in 2010 and is community-driven. From the beginning, it was a fork of the JSLint project. As more people develop JSHint, it has integrated and changed more rapidly than JSLint.
In addition, JSHint provides comprehensive documentation for each of its rules. Additionally, it is easy to integrate it into editors.
Having a relaxed default configuration is one of the small downsides of JSHint. It requires some setup in order to be useful. The error messages are also harder to identify as you need to change specific rules when compared to ESLint.
npm install jshint --global // or npm install jshint --save-dev
- Configuring most settings is possible.
- Provides support for a configuration file, which makes larger projects easier to use.
- Supports several libraries out of the box, including jQuery, QUnit, NodeJS, and Mocha.
- Support for basic ES6 features.
- There is difficulty in identifying which rule is causing an error
- JSHint has two types of options: enforcing and relaxing (which can be used to suppress warnings or to make them stricter). A slight confusion can result from this configuration.
- Custom rules are not supported.
It is an easy-to-use tool for those who agree with the good things about it. You can install it and start using it right away. However, JSLint does not support configuration or extensibility.
Most features can't be disabled, and some don't have documentation. Besides lacking any information about integrating it with your editor, the official website is not very helpful.
npm install jslint // or npm install --save jslint
- Pre-configured and ready to use (if you agree to its rules).
- Many rules cannot be disabled due to limited configuration options.
- Custom rules cannot be added.
- A configuration file is not available with JSLint, which can create problems if you need to make changes.
- Features that are undocumented.
- Uncertainty about which rule causes which error.
A recent addition to the list is ESLint. There are a lot of custom rules, and it's easy to install plugins to make it extensible and easy to customize.
To make sure you always know which rules caused the error messages, it gives concise output but includes the rule name by default. A bit of luck can be involved with ESLint documentation.
Having a clear rule list with logical categorization is a plus, but the configuration instructions are occasionally hard to follow. It provides a single location for editor integration, plugins, and examples.
npm install eslint --save-dev // or npm install eslint --global
- A lot of plugins are available and it is very extensible.
- Easily understandable output.
- With ESLint, you can detect problems faster and more efficiently than with other linters by utilizing the many rules not found in other linters.
- One of the few tools to support JSX and ES6.
- Custom reporters are supported.
- It requires some configuration.
- Not a hindrance, but slow.
$ npm install standard --global // or $ npm install standard --save-dev
- There are no configurations. Maintain a consistent style in your project with the easiest method possible. You can just drop it in.
- Format code automatically. Using standard --fix will eliminate messy or inconsistent code for good.
- You should catch style issues and programming errors early on. Ensure that the reviewer and contributor are working together in a timely manner by eliminating the back-and-forth between them.
In the event that you only want to check your coding style, JSCS can be a good choice as a best linter. It provides a vast collection of rules, so if all you need are coding style checks, it's an excellent choice.
You can use JSLint to check snippets or single files. There is one potential downside to JSHint: it's not suitable for large projects. It can also be installed via npm and its linting rules are customizable.
Additionally, the site has a single-page website for linting errors or single files or snippets. The ESLint plugin is available on npm as well as easily integrated into workflows like the JSHint plugin.
As you learn its CLI, you can take advantage of its question-answer format. Aside from industry standards and open-source style guides, it provides the best linting rules for any project.
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