react-spectrum

acddd45c - working branch for supporting windows contributors (#6313)

working branch for supporting windows contributors (#6313) * remove --extensions as they are unnecessary add is-mingw use isMinGW to use proper slashes on windows git bash * remove logs from preview builder * is-mingw is a dev dep * patching storybook-builder-parcel to solve windows forward slash issues --------- Co-authored-by: David Coleman <dcoleman@adobe.com> Co-authored-by: Daniel Lu <dl1644@gmail.com>