kcl

KCL Programming Language Core and API (CNCF Sandbox Project). https://kcl-lang.io

23 articles

How to Debug KCL Configuration Issues Leveraging LSP Tools

Debug KCL configuration issues efficiently using LSP tools. Get real-time diagnostics, inspect types, navigate definitions, and visualize mismatches in your IDE for faster problem-solving.

how-to-guide

Mar 5, 2026

How the kcl-error Module Handles and Presents Errors and Diagnostics in KCL

Discover how the kcl-error module in KCL buffers, classifies, and renders diagnostics as colorized source snippets with actionable suggestions for developers.

internals

Mar 5, 2026

KCL's WASM Compilation Target: Inside the wasm32-wasip1 Implementation

Explore KCL's wasm32-wasip1 compilation target and its internal WASI preview 1 implementation. Understand how KCL routes plugin calls for WebAssembly modules.

internals

Mar 5, 2026

How KCL Validates Configurations Against OpenAPI Specifications for Compliance

KCL validates configurations against OpenAPI specs using a two-step pipeline. Convert OpenAPI to KCL schemas and run KCL-Vet for runtime constraint checking automatically.

how-to-guide

Mar 5, 2026

kcl-ast vs kcl-ast-pretty: Understanding the Distinction in KCL's Compiler

Explore the difference between kcl-ast and kcl-ast-pretty in KCL. Learn how kcl-ast defines syntax trees and kcl-ast-pretty formats them for readability and debugging.

internals

Mar 5, 2026

How to Extend KCL Configurations with Custom Functions or External Plugins

Extend KCL configurations with custom functions or external plugins. Learn to import modules, write reusable code, and enable plugins for enhanced functionality.

how-to-guide

Mar 5, 2026

Performance Characteristics of KCL's Rust-Based Runtime Environment: A Technical Deep Dive

Explore KCL's Rust runtime performance. Discover zero-cost abstractions, incremental compilation, and async I/O for near-native speeds on native and WebAssembly.

deep-dive

Mar 5, 2026

How KCL Module Loading Works: Search Path Resolution and Module Discovery

Learn how KCL module loading works. Discover the KCL module search path, including entry directory, KCL_PATH, standard library, and current directory for efficient module resolution.

internals

Mar 5, 2026

KCL Multi-Language SDK Architecture: How Rust, Go, and Python Bindings Work

Explore KCL's multi-language SDK architecture. Discover how Rust, Go, and Python bindings leverage a Rust core via C-API and Protocol Buffers for seamless compiler interaction.

architecture

Mar 5, 2026

How KCL Generates JSON and YAML Output from .k Configuration Files

Learn how KCL generates JSON and YAML from .k files. Discover the evaluation and serialization process using dedicated formatter pipelines.

how-to-guide

Mar 5, 2026

Key Differences Between KCL's AST Evaluator and Fast Evaluator

Explore the key differences between KCL's AST evaluator and fast evaluator. Understand their distinct approaches to compilation and interpretation for speed and feature completeness.

internals

Mar 5, 2026

How KCL's Virtual File System (VFS) Operates Within the LSP Implementation

Discover how KCL's Virtual File System VFS in the LSP implementation manages thread-safe in-memory file views for real-time diagnostics and code analysis.

internals

Mar 5, 2026

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