javascriptflowtypeflow-typed
Why do some types in Flow libdefs have dollar sign in the begining
Some libdefs in flow-typed respository have types, started with the dollar sign, like $AxiosXHR:
It looks like it declares globally available type, but I am not sure, and I haven't found any documentation about it.
Solution
Right now there's not a good way to write types inside declare module {} bodies that aren't exported, so the best option is to put a declaration outside the declare module {} and reference it.
To prevent clashing names, it's a convention to put something like $npm$ModuleName$ before the type/var name.
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