$ flutter precache --help
Populate the Flutter tool's cache of binary artifacts.

If no explicit platform flags are provided, this command will download the artifacts for all currently enabled platforms

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What are currently enabled platforms? Let's say I don't have any Flutter project on my machine and I run flutter precache – how are enabled platforms inferred?

On Linux, I noticed that flutter precache is equivalent to flutter precache --android --web --linux.

On macOS I noticed that flutter precache is equivalent to flutter precache --android --web --macos --ios.

So I can see the pattern (currently enabled platforms are all platforms that can be built on the current OS), but I feel like it's not explained well enough.

I think the help message should answer these doubts.