What is the best way to get data from a js file?

Question

PHP

There is a js file, it contains the declaration of some variables

o.prop1 = 12;

o.prop2 = {
  key: value
}

In addition, it may contain arbitrary code. We need to get the values ​​of some properties of the "o" object.
You can parse with regular expressions, but this is not reliable, because the contents of the file may change.
There was an idea to use the javascript interpreter written in php. To drive the file code into it, get what you need at the output.
So the question is - where can I get such a sandbox interpreter, preferably with the ability to be installed by the composer?
Or maybe there is another way to get data, without regular expressions and a sandbox?

Answer 1

There is a php extension: V8js - for integrating the V8 engine into PHP.