These import are used as types at line #237 https://lgtm.com/projects/g/syzoj/syzoj-ng/snapshot/cf3dca209027e2e2d262381add0d3f21a0c1cbd2/files/src/migration/migrations/problem.ts?sort=name&dir=ASC&mode=heatmap#xd5a2c169d59c7005:1
These import are used as types at line #237
https://lgtm.com/projects/g/syzoj/syzoj-ng/snapshot/cf3dca209027e2e2d262381add0d3f21a0c1cbd2/files/src/migration/migrations/problem.ts?sort=name&dir=ASC&mode=heatmap#xd5a2c169d59c7005:1