strict mode: Errors on read-only and non-configurable properties.
strict mode: Errors on read-only and non-configurable properties.

ccxvii/mujs,ccxvii/mujs,thurday/mujs,ccxvii/mujs,Frky/mujs,guiquanz/mujs,evanlabs/mujs,BOGY/mujs,ccxvii/mujs,lsm/mujs