Apple has a utility for simulating different network conditions. Helpful if the browser speed throttle doesn't cut it, and you want to also test packet loss. Download Additional Tools for Xcode, then find it in the Hardware folder.
Only dependences older than the given timerange are installed with this setting (MinimumReleaseAge in pnpm, min-release-age in npm), to prevent supply chain attacks.
In JavaScript, using .filter(Boolean) on an array of strings will filter out all empty string values. Noticed this in a code review today. I'd probably prefer .filter(v => v !== "") for clarity, but it's kinda neat.
Setting this in the console makes all content in the site inline editable.