Efficient Search in Local-First Web Apps using a DSL
2025-04-24
This article presents an efficient search system for local-first web applications built using a Domain-Specific Language (DSL). Leveraging TypeScript and parser combinators, a robust, maintainable, and extensible search engine is created. By defining an Issue interface and parsers, the system parses DSL queries, generates an Abstract Syntax Tree (AST), and ultimately produces predicate functions for data filtering. Performance tests demonstrate the system's ability to efficiently handle millions of records. The article also explores performance enhancements such as indexing, query optimization, and caching.
Read more
Development