perex
An ECMAScript regex engine designed for explicit host memory ownership.
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GITHUB · launched Sep 10, 2026 · 10 upvotes (top 74%) · 0 views
Niche: data parsing libraries and tools · 71 launches, 1 in the last 7 days · Explore this niche →
Category and tags
- Horizontal
- Dev tools
- Developer
- Not AI
- Hobby / open-source project
- perryts
- regex
- rust
- typescript
Visit website ↗ Source listing ↗
More like this: all 71 launches in data parsing libraries and tools →
Could you build this?
No Writing an ECMAScript-compliant regular expression engine with explicit memory ownership requires deep expertise in formal automata theory and low-level systems programming.
What it would actually take: Developing an engine like perex involves building a custom lexer, AST parser, and compiler that transforms ECMAScript regex syntax into non-deterministic and deterministic finite automata (NFA/DFA) or bytecode VMs. It must handle tricky semantics like Unicode property escapes, lookarounds, and backtracking limits while strictly managing custom host memory allocations without garbage collection overhead. This demands advanced systems programming in Rust or C++ alongside deep compiler design expertise.
Competitors
Other products that read as similar to this one : 2242 launches clear the similarity bar, closest 8 shown.
Attention rank: #1656 of 2243 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 314 days after the earliest competitor.
- Jik · hn · 2026-11-01 · 6 upvotes · similarity 0.54
- A parser for the ISO 10303 EXPRESS language for its 40th anniversary · hn · 2026-06-07 · 7 upvotes · similarity 0.53
- Persistent memory for Claude Code sessions · hn · 2025-12-02 · 22 upvotes · similarity 0.53
- WarpGrep: A 20x faster subagent to grep for code · yc · 2025-11-28 · 17 upvotes · similarity 0.51
- polyxor · github · 2026-09-26 · 53 upvotes · similarity 0.51
- A (marginally) useful x86-64 ELF executable in 298 bytes · hn · 2026-04-07 · 13 upvotes · similarity 0.51
- NeuralScript · hn · 2026-05-04 · 5 upvotes · similarity 0.51
- bitwright · github · 2026-09-23 · 41 upvotes · similarity 0.50
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