d3-view/src/utils/uid.js

View-model d3 plugin for building interactive data-driven web interfaces

let UID = 0;
const prefix = "d3v";

// Add a unique identifier to an object
export default function(o) {
  var uid = prefix + ++UID;

  if (arguments.length) {
    Object.defineProperty(o, "uid", {
      get: function() {
        return uid;
      }
    });

    return o;
  } else return uid;
}