Fix mapped types throwing eslint errors 

```
type TypographyPathifyT = {
  [key in keyof TypographyVariantsT]: string,
};
```

Will first produce `'key' is defined but never used.eslint[no-unused-vars](https://eslint.org/docs/latest/rules/no-unused-vars)` and then using mapped types more will produce, `'key' is already defined.eslint[no-redeclare](https://eslint.org/docs/latest/rules/no-redeclare)`