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A JavaScript engine optimized for running React Native.

18 mentions on Hacker News by 16 people: 3 stories, 15 comments · first 2019-07-11 · latest 2026-09-10

Mentions per year 18 mentions · busiest year 2021 (3)
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  1. …also a project to add a static JS compiler, but it's been in development hell for the last 3 years: https://github.com/facebook/hermes/tree/static_h
    comment by cyberax · 2026-09-10 · in Shopify is moving from React Native back to Swift and Kotlin
  2. Thanks! It'd really interesting to try static Hermes with it ( https://github.com/facebook/hermes/tree/static_h ). iOS is braindead and doesn't allow JITs, so regular JavaScript is not a good option.
    comment by cyberax · 2026-08-01 · in June in Servo: real world compat, media queries, SharedWorker, and more
  3. …but it should still be working, and can probably be brought up to date with some small effort: https://github.com/facebook/hermes/tree/static_h/API/hermes_... EDIT: Reading some of your other comments, I should point out that this is more…
    comment by neildhar · 2026-01-04 · in JavaScript engines zoo – Compare every JavaScript engine
  4. …could implement a decent chunk of Node-API). The Hermes team are currently interested in it ( https://github.com/facebook/hermes/pull/1377#issuecomment-29... ) for implementing heavy chunks of the ECMAScript spec like Intl and Temporal as…
    comment by LinguaBrowse · 2025-07-27 · in The many JavaScript runtimes of the last decade
  5. …is the answer to the JS and iOS startup issues. Of course it's a decade too late for flutter. :P https://github.com/facebook/hermes https://x.com/tmikov/status/1869945330638442651 Btw that Angular history is backwards. The first versions…
    comment by esprehn · 2025-01-30 · in An update on Dart macros and data serialization
  6. This is a fork and has not been updated for four years. Active project is here: https://github.com/facebook/hermes
    comment by brudgers · 2025-01-06 · in Hermes: JavaScript engine optimized for running React Native on Android
  7. …so we can speed-up Javascript engines one the Edge! Context: I'm Syrus, from Wasmer [3] [1] https://github.com/facebook/hermes/discussions/1137 [2] https://github.com/tc39/test262 [3] https://wasmer.io
    comment by syrusakbary · 2024-07-30 · in Porffor: A from-scratch experimental ahead-of-time JS engine
  8. Thanks! There's a preliminary PR with a discussion here: https://github.com/facebook/hermes/pull/933 (and broader context here: https://github.com/facebook/hermes/issues/811 ). But we'll see if there's any interest on Hermes' side to…
    comment by radex · 2023-03-04 · in I made JSON.parse() 2x faster
  9. …spent but is pretty cool anyways, and I don't know of any other work in this area. Check it out: https://github.com/facebook/hermes/blob/main/lib/BCGen/HBC/C...
    comment by ridiculous_fish · 2022-09-24 · in Optimizing compilers deduplicate strings and arrays
  10. No one’s looking at Static Hermes? https://github.com/facebook/hermes/commits/static_h
    comment by zer0zzz · 2022-09-23 · in Show HN: Ezno, a type checker for JavaScript and optimiser for React
  11. …non-JIT Javascript engine just for the purpose of optimizing startup times for React Native apps ( https://github.com/facebook/hermes ). If you consider how even Facebook had to ditch the V8 JIT for their purpose it's totally…
    comment by cyber_kinetist · 2022-06-16 · in Sciter – Multiplatform HTML/CSS/JavaScript UI Engine for Applications
  12. …> The Hermes JavaScript engine statically compiles JS to bytecode. https://github.com/facebook/hermes
    comment by wind_bat_ri · 2021-08-10 · in Why WebAssembly is innovative even outside the browser
  13. The Hermes JavaScript engine statically compiles JS to bytecode. https://github.com/facebook/hermes
    comment by ridiculous_fish · 2021-08-08 · in Why WebAssembly is innovative even outside the browser
  14. For other small JS engines similar to QuickJS see Hermes: https://github.com/facebook/hermes
    comment by windowojji · 2021-08-01 · in Txiki.js: Tiny JavaScript runtime built with QuickJS and libuv
  15. …strict subset of JS to more performant Webassembly and it would outperform modern JS engines. [1] https://github.com/facebook/hermes [2] https://v8.dev/docs/ignition [3] https://v8.dev/docs/turbofan [4] https://www.assemblyscript.org/
    comment by Chyzwar · 2020-06-23 · in Goldman Sans