Grabbed dndbeyond's source code

```
~/go/bin/sourcemapper -output ddb -jsurl https://media.dndbeyond.com/character-app/static/js/main.90aa78c5.js
```

ddb_main/react-jsx-parser/source/helpers/camelCase.ts

@@ -0,0 +1,15 @@
+/**
+ * Converts a string from other cases to camelCase
+ * @param string the value to camelCase
+ * @example
+ * camelCase('foo-bar') // 'fooBar'
+ */
+export const camelCase = (string: string) => string
+	.replace(/([A-Z])([A-Z])/g, '$1 $2')
+	.replace(/([a-z])([A-Z])/g, '$1 $2')
+	.replace(/[^a-zA-Z\u00C0-\u00ff]/g, ' ')
+	.toLowerCase()
+	.split(' ')
+	.filter(value => value)
+	.map((s, i) => (i > 0 ? s[0].toUpperCase() + s.slice(1) : s))
+	.join('')