add `asValidValue` for creating an optional from and undefined or null `JSValue`
add `asValidValue` for creating an optional from and undefined or null `JSValue`

Electrode-iOS/ELHybridWeb,kuruvilla6970/Zoot,TheHolyGrail/Zoot,kuruvilla6970/Zoot,TheHolyGrail/Zoot,Electrode-iOS/ELHybridWeb,kuruvilla6970/Zoot