Summary:
Somehow referring to the parent directory doesn't work on Windows. Please don't ask me why. Given that we run a script from outside the package doing it on the top-level seems more consistent anyway.
Pull Request resolved: https://github.com/facebook/flipper/pull/2101
Test Plan: Yarn on Windows succeeds: https://github.com/facebook/flipper/pull/2101/checks?check_run_id=2195613718
Reviewed By: fabiomassimo
Differential Revision: D27335250
Pulled By: passy
fbshipit-source-id: aaccdb3f7e78ca264b371a7723c9bad065919d45
Summary: This diffs refactors tsc projects structure and structure of our custom typings to allow producing typescript typings for "flipper" package. In next diffs I'm going to use the produced typings to check compatibility of plugins with certain versions of Flipper, e.g. to check whether plugin is compatible with current "stable" and "insiders" version.
Reviewed By: passy
Differential Revision: D26997158
fbshipit-source-id: a0416c7139bf08ec9d175730da4c4c2a8768eeb7
