Show HN: Jsiphon – Streaming JSON parser with delta tracking and ambiguity trees (github.com)

Jsiphon, a new streaming JSON parser for TypeScript, has been introduced to facilitate real-time data processing. This append-only parser allows developers to handle incomplete JSON data as it streams, retaining previously parsed values without mutations. This capability proves vital for applications involving large language models (LLMs), chunked HTTP responses, and scenarios where JSON arrives incrementally, allowing for immediate usability of data without waiting for complete outputs. The significance of Jsiphon lies in its innovative features: it uses delta tracking to ensure only new characters are appended during UI updates, minimizing re-rendering costs. Additionally, its ambiguity tree provides real-time feedback on the stability of the parsed data, enabling developers to discern when data fields are complete and safe to use. With full TypeScript support and a focus on performance, this lightweight library is designed for efficient streaming applications, aligning seamlessly with the incremental nature of data from modern APIs and LLMs.