I am still in the mock phase for a Webaudio plugin. In WebAudio there are many AudioNode subclasses. I see many examples of calling functions, but not any places getting or setting properties.
Example, there is an AnalyserNode. It has properties, AnalyserNode - Web APIs | MDN : fftSize, frequencyBitCount (getter only), minDecibels, maxDecibels, & smoothingTimeConstant.
If it is not a function, how do you define it in c++?
Many ways to do it.
For simple values, you can use Napi instanceValue:
For values coming from C++, use instanceAccessor:
if the setter is nullptr then it’s a readonly value.
Also, you can find implementation ‘almost’ everywhere in the repo for Setter/Getter. Like this one:
This is documented here as well, though some of it is node-specific which can be ignored.
nodejs/node-addon-api: Module for using N-API from C++ (github.com)