fix(build): remove exports field for node.js stability (#347)

Author: ricokahler

package.json

@@ -22,7 +22,6 @@
     "chroma-js"
   ],
   "sideEffects": false,
-  "exports": "./dist/index.modern.js",
   "main": "./dist/index.js",
   "unpkg": "./dist/index.umd.js",
   "module": "./dist/index.module.js",