Fix the virtual_fs::StaticFile
implementation
#4355
Merged
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The
AsyncRead
implementation forvirtual_fs::StaticFile
never updates its internal cursor, so reading from aStaticFile
would always yield the same bytes without ever encountering an EOF.I've fixed this by throwing away a lot of the custom code and just making
StaticFile
a thin wrapper aroundstd::io::Cursor
. I've also updated the other filesystem trait implementations so trying to modify avirtual_fs::StaticFile
now returns a permission error instead of silently doing nothing.Fixes wasmerio/wasmer-js#366