A recent change in CodeSandbox now stops test files from loading if the test file is pointed to from the main field of the package.json. They don't anticipate fixing this issue in the near future, so we need to remove the main fields until we can add a ?module=/path/to/string to each exercise.
Issue
A recent change in CodeSandbox now stops test files from loading if the test file is pointed to from the
mainfield of thepackage.json. They don't anticipate fixing this issue in the near future, so we need to remove themainfields until we can add a?module=/path/to/stringto each exercise.See: https://github.com/codesandbox/codesandbox-client/issues/3373