Fix broken `require` in deprecated `core.js`
Fix broken `require` in deprecated `core.js`

FSMaxB/mathjs,josdejong/mathjs,FSMaxB/mathjs,josdejong/mathjs,FSMaxB/mathjs,FSMaxB/mathjs,josdejong/mathjs,FSMaxB/mathjs,josdejong/mathjs,josdejong/mathjs