workaround example to support NodeJS less V10.11.0 and even less V8.13.0

[proxy-m]

See commits, it just working example.

[copy]

What's the issue with speaker.js?

[proxy-m]

Looks like version problem of Closure compiller, or Nodejs, or Reflect:

src/browser/speaker.js:487: ERROR - [JSC_UNDEFINED_VARIABLE] variable AudioWorkletProcessor is undeclared
            var self = Reflect.construct(AudioWorkletProcessor, [], DACProcessor);
                                         ^^^^^^^^^^^^^^^^^^^^^

src/browser/speaker.js:766: ERROR - [JSC_UNDEFINED_VARIABLE] variable AudioWorkletNode is undeclared
        this.node_processor = new AudioWorkletNode(this.audio_context, "dac-processor",
                                  ^^^^^^^^^^^^^^^^

2 error(s), 0 warning(s)
Makefile:100: recipe for target 'build/v86_all.js' failed

Similar compatibility problems links (I tried to search solution, but do not understand):

https://stackoverflow.com/questions/37787606/google-closure-compiler-gives-jsc-inexistent-property-for-new-web-audio-api-meth

https://developers.google.com/closure/compiler/docs/api-tutorial3#howto-app

github/babel-plugin-transform-custom-element-classes#8

https://stackoverflow.com/questions/50346328/what-is-javascript-reflect-construct-newtarget-doing
https://stackoverflow.com/questions/48341824/nodejs-what-does-reflect-function-do
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Reflect (must be supported compatible by table)

https://developer.mozilla.org/en-US/docs/Web/API/AudioWorkletProcessor
emscripten-core/emscripten#6230 (may be similar problem with optimization options, uglifying, es6, context, modules, exporting in conjunction with wasm and closure)

https://stackoverflow.com/questions/36363849/error-when-compiling-code-with-google-closure-compiler (other error about needing externs file)
https://stackoverflow.com/questions/49971779/error-audioworkletnode-is-undefined-in-react-app (other error about react)

https://github.com/teppeis/closure-compiler-es-compat-table/blob/master/es6/latest/syntax/new.target/in_constructors/error.txt

google/closure-compiler#2899

https://kangax.github.io/compat-table/es6/ (errors table)

[proxy-m]

It is not priority.