src/styles/zIndex.d.ts
type ZIndexes =
| 'Z_INDEX0'
| 'Z_INDEX1'
| 'Z_INDEX2'
| 'Z_INDEX3'
| 'Z_INDEX4'
| 'Z_INDEX5'
| 'Z_INDEX6'
| 'Z_INDEX7'
| 'Z_INDEX8'
| 'Z_INDEX9'
type ZIndexConfig = { zIndex: number }
declare const zIndex: { [Key in ZIndexes]: ZIndexConfig }
export default zIndex