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decisionlog

How real engineering decisions get made.

One open-source pull request, issue, or RFC at a time — read end to end and written up with the debate, the trade-offs, and the lesson left in.

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  1. Why Rich Harris reverted Svelte's $state.link 24 hours after merging it

    The cheapest moment to walk back a shipped API is before anyone arrives — Svelte's two senior engineers spent twenty-four hours showing how the window closes.