AmbientLightSensor constructor cannot initialize illuminance

[foolip]

https://w3c.github.io/ambient-light/#ambient-light-sensor-interface

This seems like a bug, there should probably be an AmbientLightSensorOptions dictionary that includes illuminance.

[pozdnyakov]

think the illuminance attribute should rather be nullable. @tobie

[foolip]

That would be an orthogonal question, the problem is that it's current readonly so there's no way to set it to any value.

[tobie]

Well, that's by design. It's a getter to the value provided by the sensor.

[pozdnyakov]

@foolip what would be the use case for setting illuminance from the ctor? AFAIK it should just contain the latest AML sensor reading in activated state and be null in all the other states.

[foolip]

OK, I didn't follow the links, I assumed that the relationship between AmbientLightSensor and Sensor was like that between MessageEvent and Event, that both had constructors that should be able to set all of the members, and that the members never change. Not so.

[tobie]

That's the design we had initially, which probably explains why you got confused.