PromptL Compiler

Official JavaScript/TypeScript compiler for PromptL, a language for defining dynamic LLM prompts with variables and control flow. Current version 0.12.0, actively developed by Latitude. Ships TypeScript types natively. Compiles PromptL syntax into structured JSON messages compatible with major LLM providers like OpenAI. Unlike raw template strings, PromptL provides a validated grammar, front-matter for model config, and built-in support for multi-turn conversations. Release cadence is weekly to bi-weekly. Key differentiator: human-readable prompt files with dynamic logic, compiled to provider-native formats without runtime dependencies.