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Rich Harris - Rethinking reactivity

You Gotta Love Frontend · talk · Watch on YouTube

Web developmentCompilers, interpreters & program analysis

What it is

Svelte creator Rich Harris explains moving reactivity into the compiler and language rather than tracking state at runtime, with a history of spreadsheets as reactive systems and comparisons to React.

Why Hacker News recommends it

The most recommended introduction to Svelte, credited with sparking its adoption.

  • 15 people recommended it
  • 13 different months
  • 5 strong recommendations
  • first 2019, last 2026

What HN commenters said

  1. “you can (and I heartily recommend doing so) watch the "Rethinking reactivity" video here”

    Rich Harris's Rethinking Reactivity talk on Svelte

    CharlesW, 2019-07 · Strong recommendation · in “Svelte is the most beautiful web framework I've seen”

  2. “watch this fantastic intro to svelte talk by it's creator”

    Fantastic intro to Svelte covering React's growing pains

    hardwaresofton, 2019-08 · Strong recommendation · in “Introduction to Svelte”

  3. “Highly recommend this talk”

    Excellent speaker showing how Svelte approaches problems

    gregors, 2020-03 · Strong recommendation · in “Svelte Is Unappealing”

  4. “I HIGHLY recommend listening to this presentation called "Rethinking reactivity" by Rich Harris (the creator)”

    Creator's presentation on Svelte's reactivity approach

    doodlesdev, 2022-07 · Strong recommendation · in “The new wave of React state management”

  5. “is an amazing talk which talks about how spreadsheets were the OG reactivity software. Highly recommended.”

    Spreadsheets as the original reactivity software

    kretaceous, 2022-08 · Strong recommendation · in “Excel is pretty dang cool”

  6. “Talk on Svelte's approach to reactivity”

    reactor, 2019-06 · Recommendation · in “JavaScript Is the CO2 of the Web [audio]”

  7. “Rich Harris' presentation is a good starting point”

    Good starting point for learning Svelte

    Tade0, 2019-06 · Recommendation · in “Vue RFC: Expose logic-related component options via function-based APIs instead”

  8. “Rich Harris' excellent talk Rethinking Reactivity has an interesting section where he compares a React Concurrent Mode demo to Svelte”

    Compares a React Concurrent Mode demo to Svelte

    anderspitman, 2019-10 · Recommendation · in “React Concurrent Mode”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: svelte, reactivity, compilers, react, rich harris, spreadsheets

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