Let's make JS RegExps Streamy
Blog post from Socket
The blog post discusses the challenges and proposed improvements for the JavaScript `RegExp` class, particularly in the context of asynchronous I/O and streaming. Socket, a code analysis engine, encounters significant issues with `RegExp` during file scanning, such as false positives, memory bloat due to buffering, and challenges with correctly managing matches at chunk boundaries. These issues arise from the need to buffer input data, which leads to inefficiencies and potential bugs in pattern matching. The post suggests a new feature proposal to TC39 aimed at enabling incremental progress in `RegExp` matching, which could reduce idle time, minimize redundant string scanning, and alleviate memory pressure. The proposal addresses various scenarios, including lookbehind, lookahead, and quantifier aggregation, with the ultimate goal of enhancing text processing efficiency in JavaScript.
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