Flink SQL Language Server

A browser-based LSP language server for Apache Flink SQL, built with Antlr4ts. Provides code completions, diagnostics, rename, references, folding, hover, formatting, and code actions for Flink SQL files. Version 0.7.1 supports Flink 1.20. Released on npm, ships TypeScript types. Differentiates from generic SQL LSPs by offering Flink-specific SQL dialect support and custom commands for extracting SQL structure and registering schemas for auto-completion.