Deno VS Haskell

• Security
  Deno has a secure-by-default approach, requiring explicit permission for file, network, and environment access, which reduces the risk of malicious code.
• Built-in Tooling
  Deno includes built-in tools like a dependency inspector, a code formatter, and a test runner, reducing the need for additional setup.
• Modern JavaScript/TypeScript
  Deno supports modern JavaScript and has built-in TypeScript support, making it easier to work with contemporary codebases without additional configuration.
• Simplified Module Management
  Deno uses URLs for importing modules, eliminating the need for a package manager like npm and simplifying dependency management.
• Compatibility with Web Standards
  Deno aims to be browser-compatible, adhering closely to web standards like the Fetch API, making it easier to share code between the server and the client.

Possible disadvantages

• Ecosystem Maturity
  Deno's ecosystem is relatively new compared to Node.js, resulting in fewer libraries, tools, and community resources.
• Breaking Changes
  Due to its rapid development, Deno can have breaking changes between versions, potentially requiring more frequent updates and code adjustments.
• Performance
  Deno's performance may not match that of optimized Node.js applications, especially for certain workloads where Node.js has been highly tuned.
• Learning Curve
  Even though Deno is designed to be familiar to JavaScript and TypeScript developers, it introduces new concepts (like secure-by-default) that may require a learning curve.
• Limited Enterprise Adoption
  Being relatively new, Deno has limited enterprise adoption, which might make it less appealing for large-scale or long-term projects that rely on a robust support ecosystem.

• Pure Functional Programming
  Haskell emphasizes pure functional programming, meaning functions have no side effects. This leads to code that is easier to understand, test, and maintain.
• Strong Type System
  Haskell's type system is strong and expressive, allowing developers to catch many errors at compile time. This results in more reliable code.
• Lazy Evaluation
  Haskell uses lazy evaluation by default, which can lead to performance improvements by avoiding unnecessary computations and enabling the creation of infinite data structures.
• Immutability
  In Haskell, data is immutable by default. This leads to simpler reasoning about code behavior and reduces bugs related to mutable state.
• High-Level Abstractions
  Haskell provides powerful abstractions like monads, functors, and applicative functors, which can lead to more concise and expressive code.
• Concurrency
  Haskell has excellent support for concurrency and parallelism through its lightweight threading model and software transactional memory, making it suitable for concurrent applications.
• Community and Libraries
  Haskell has a dedicated community and a rich set of libraries and tools, which can help accelerate development and provide solutions to common problems.

Possible disadvantages

• Steep Learning Curve
  Haskell has a steep learning curve, particularly for developers who are new to functional programming or coming from imperative and object-oriented backgrounds.
• Performance Concerns
  While Haskell can be efficient, its performance can sometimes lag behind other languages like C++ or Rust for certain use cases, especially those requiring low-level optimization.
• Limited Industry Adoption
  Haskell is not as widely adopted in industry compared to languages like Java, Python, or JavaScript, which can limit job opportunities and community size.
• Compilation Times
  Haskell's compilation times can be long, especially for large projects, which can slow down the development process.
• Tooling and IDE Support
  While improving, the tooling and IDE support for Haskell is not as mature as for some other popular languages, potentially affecting developer productivity.
• Complexity of Advanced Features
  Some of Haskell's advanced features, such as monads and type-level programming, can be complex and difficult to master, which can be a barrier for new developers.
• Library Gaps
  Although Haskell has many libraries, there might be gaps or less mature libraries for some specific use cases compared to more mainstream languages.

Why nobody is using Deno?

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