Uncaught TypeError: Cannot assign to read only property

[Yaroslav]

Uncaught TypeError: Cannot assign to read only property 'copy' of function 'function scale(x)
How I can fix it? I use
import { scaleLinear } from "d3-scale"

in part of inside lib code:

  var scale = continuous();

  scale.copy = function() { // <== error here
    return copy(scale, linear());
  };

  initRange.apply(scale, arguments);

  return linearish(scale);

P.S. Using Vue 2.4

[Mike Bostock]

Sorry, but I have no idea what’s going wrong here. It would appear that your bundler is breaking the code somehow.