Ensure that tailwind experimental classRegex is set for proper template literal intellisense: https://github.com/tailwindlabs/tailwindcss-intellisense/issues/129#issuecomment-747487269
RR Port commit: 96a59ae121806780fd2d4086f388309a7870caa4
Note:
Unit tests from RR's test directory are split into multiple tests that are colocated for each class.
the Trajectory test is split into Trajectory.test.ts, and TrajectoryBuilder.test.ts