It's a little surprising how few programming languages have first-party/official LSP implementations. It's such a valuable part of the user's experience!
(cf Smalltalk where the environment is often more important than the syntax or libraries.)
miniblog.
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I asked Hermes Agent to change how it set thread titles, and it patched its own source code!
Self modifying code is hard to reason about even in a deterministic environment. I'd already limited Hermes access to the todoist API and web search out of an abundance of caution.
Excellent series on Self, both the programming model and the tool chain.
I love how opening an inspector on a value (e.g. nil) then shows a link to all occurrences of the value in other open inspectors!
The niche of short, environment-specific scripts, and the consequences for programming language design choices: