Vuejs component modification. (STL volume calculation)

I will provide a vue.js component code to you and want from you to add a property to it. This code is a 3D file viewer. What I want from you is to get the volume of the 3d part loaded to this component. I will provide you the function that calculates the volume of an STL file both in Node.js and Python. The reading procedure of the data is the same in the component with the node.js example. You will only implement node.js function in the vue.js code (both are javascript.) You will only implement for STL files. Anybody who has vue.js and node.js expertise can do the job. I will check the function with a proven calculator and the values must be very similar. Otherwise it won't work for me.