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JSLint vs TSLint: What are the differences?

Key Differences between JSLint and TSLint

  1. Enforcement Level: JSLint is a more opinionated linter that enforces strict rules for JavaScript code. It focuses on maintaining a consistent coding style and discourages certain language features. On the other hand, TSLint is a more configurable linter specifically designed for TypeScript, providing a wide range of rules that can be customized according to the project's requirements.

  2. Supported Languages: JSLint primarily targets JavaScript code, while TSLint is specifically tailored for TypeScript. JSLint focuses on analyzing JavaScript syntax and provides guidelines for writing clean and error-free code, whereas TSLint extends its support to TypeScript features and additional type checking rules.

  3. Community Support and Maintenance: JSLint is an older tool with a smaller community and limited updates. It was created by Douglas Crockford, who maintains the tool but does not actively add new features. On the other hand, TSLint benefits from a larger and more active community. It is an open-source project with frequent updates, bug fixes, and contributions from developers worldwide.

  4. Integration with IDEs and Editors: JSLint provides seamless integration with various code editors and IDEs, making it easier to integrate into existing development workflows. It offers plugins and extensions for popular editors like Visual Studio Code, Sublime Text, and Atom. TSLint, being specifically designed for TypeScript, offers even richer integration with TypeScript-enabled editors, providing enhanced linting capabilities alongside code intelligence features.

  5. TypeScript-Specific Rules: As TSLint is built for TypeScript, it includes a set of rules specifically created to address TypeScript language features, such as type-related checks and best practices specific to TypeScript codebases. JSLint is solely focused on JavaScript and lacks these TypeScript-specific rules.

  6. Migrating Existing Projects: If you have a JavaScript project without using TypeScript, JSLint would be more suitable for linting your code. However, if you are working on a TypeScript project or planning to migrate to TypeScript, TSLint would be the recommended choice, providing better support for TypeScript features and linting rules.

In summary, JSLint is a stricter and opinionated linter for JavaScript with limited TypeScript support, while TSLint is more configurable, designed explicitly for TypeScript, and benefits from a larger community and active maintenance.

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What is JSLint?

It is a static code analysis tool used in software development for checking if JavaScript source code complies with coding rules. It is provided primarily as a browser-based web application accessible through their domain, but there are also command-line adaptations.

What is TSLint?

An extensible static analysis tool that checks TypeScript code for readability, maintainability, and functionality errors. It is widely supported across modern editors & build systems and can be customized with your own lint rules, configurations, and formatters.

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    What are some alternatives to JSLint and TSLint?
    ESLint
    A pluggable and configurable linter tool for identifying and reporting on patterns in JavaScript. Maintain your code quality with ease.
    JSHint
    It is a community-driven tool to detect errors and potential problems in JavaScript code. It is open source and can easily adjust in the environment you expect your code to execute.
    SonarQube
    SonarQube provides an overview of the overall health of your source code and even more importantly, it highlights issues found on new code. With a Quality Gate set on your project, you will simply fix the Leak and start mechanically improving.
    SonarLint
    It is an IDE extension that helps you detect and fix quality issues as you write code. Like a spell checker, it squiggles flaws so that they can be fixed before committing code.
    TypeScript
    TypeScript is a language for application-scale JavaScript development. It's a typed superset of JavaScript that compiles to plain JavaScript.
    See all alternatives