fix SyntaxError: Unexpected token static when building

[RELNO]

Problem

Upon packing for production (using parcel.js/webpack) an error occurred: SyntaxError: Unexpected token static

Description

This error is caused since the word static is misinterpreted by terser optimization module during build for prod (but won't raise during testing). See: https://medium.com/@omril321/fixing-overly-aggressive-optimization-with-terser-f07309761b50 Probably due to static methods changeing in ES6/7

Solution

Replace variable static with staticVal where it is used

Results

Build is succesful