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Joe Savona
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Joe Savona
@en_JS
React team at Meta
Joined April 2007
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  • user avatar
    Joe Savona
    @en_JS
    Mar 11
    React Compiler: Rust edition is coming soon. We've ported the majority of the passes using AI. When the initial port finishes we'll do some updates to get the code in a state we're happy to maintain, then extensive testing and look at performance. More to come soon
    116K
  • user avatar
    Joe Savona
    @en_JS
    Jan 30
    There are so many takes on the "give the agent a DAG of tasks" idea. But the reality is that task lists were always an attempt to impose order against fundamentally chaotic systems. You find the dependencies by doing tasks as often as you realize them in advance.
    3.2K
  • user avatar
    Joe Savona
    @en_JS
    Oct 27, 2025
    A thing that you can do, when seeing a technical choice you disagree with: pause. Take a breath. Be curious. Ask yourself, "why might they have done that?". Ask the authors why they did that? What context do they have that you don't?
    19K
  • user avatar
    Joe Savona
    @en_JS
    Aug 25, 2025
    I'm really curious for feedback about React Compiler's error messages. Do people prefer very short ESLint-style messages ("can't do X") w no context/information, or informational messages with more information? Example: playground.react.dev/#N4Igzg9grgTgx…
    5.1K
  • user avatar
    Joe Savona
    @en_JS
    Jun 27, 2025
    We've been pretty happy with TypeScript for React Compiler, but actual pattern matching (with exhaustiveness checking by default!) is so good it makes me want to port to Flow:
    Image
    Match Expressions and Statements | Flow
    From flow.org
    8.7K
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