clojure/clojurescript
Clojurescript
ClojureScript is a Lisp-based compiler and runtime that translates Clojure source code into JavaScript. It enables functional programming across different JavaScript engines and platforms, allowing developers to build user interfaces and applications for web browsers and server environments.
The project provides a read-eval-print loop for executing code live within a browser or server for immediate feedback. This facilitates an interactive development workflow where code can be written and tested in real time without restarting the application.
The system covers a broad capability surface, including JavaScript interoperability, multi-runtime targeting, and the integration of external module systems and package managers. It also includes tooling for source mapping, build analysis caching, and production size optimization.
Features
- Interactive REPLs - Provides a read-eval-print loop for browsers or servers to execute code live and receive immediate feedback.
- Source-to-JavaScript Transpilers - Translates Clojure source code into optimized JavaScript for execution in browsers and server environments.
- Read-Eval-Print Loops - Uses a live read-eval-print loop to write and test code in real time without restarting the application.
- Language Runtime Environments - Provides a runtime environment that enables Clojure code to operate across various JavaScript engines.
- JavaScript Interoperability - Provides essential mechanisms for exchanging data and invoking functions between ClojureScript and the JavaScript runtime.
- Persistent Data Structure Mappings - Maps immutable Clojure collections to optimized JavaScript objects to maintain functional programming semantics.
- Frontend Dialects - Implements a functional Lisp-based language specifically targeted at the JavaScript runtime for building user interfaces.
- Multi-Target Compilers - Compiles code for various environments such as browsers and servers to ensure cross-platform operation.
- Lisp AST Transformations - Translates Lisp-style source code into an intermediate tree structure before generating JavaScript output.
- Cross-Platform Runtimes - Ensures compatibility across different browsers and server-side environments by compiling a single codebase into JavaScript.
- S-Expression Parsers - Processes nested parenthetical expressions into an internal representation for recursive analysis and compilation.
- Full-Stack Web Development - Shares logic between server and client by compiling source to run on both Node.js and browser runtimes.
- Functional Frontend Development - Enables writing browser-based applications using Clojure syntax that compiles to JavaScript for execution.
- JavaScript Library Integrations - Implements mechanisms for importing and utilizing standard JavaScript packages and libraries within compiled code.
- Incremental Build Caches - Stores analyzed source dependencies on disk to skip reprocessing unchanged files during the compilation cycle.
- Dependency Management Configurations - Resolves and includes external modules from package managers during the build process to extend functionality.
- Source Map Generators - Generates mapping files that correlate compiled JavaScript positions back to the original Clojure source lines.
- Module System Interoperability Layers - Wraps compiled code in compatible formats for seamless integration with CommonJS or ES module systems.
- Dynamic Runtime Injection - Injects a core library at runtime to provide essential language features like namespaces and global state.
- Unit Testing Frameworks - Supports executing test suites using asynchronous testing libraries to verify code behavior.
- Asset Bundlers - Exports code using standard targets to streamline the process of bundling assets for production.
- Functional Languages - Lisp dialect with immutable data structures.
- Programming Languages - Clojure to JavaScript compiler.
- Test-Frameworks - Integrated testing framework for verifying application logic.
