svgdom/src/utils/objectCreationUtils.js

Straightforward DOM implementation for SVG, HTML and XML

export const extend = (...modules) => {
  var methods, key, i

  // Get object with extensions
  methods = modules.pop()

  for (i = modules.length - 1; i >= 0; i--) {
    for (key in methods) { modules[i].prototype[key] = methods[key] }
  }
}

export const extendStatic = (...modules) => {
  var methods, key, i

  // Get object with extensions
  methods = modules.pop()

  for (i = modules.length - 1; i >= 0; i--) {
    for (key in methods) { modules[i][key] = methods[key] }
  }
}

// TODO: refactor so that it takes a class
export const mixin = (mixin, _class) => {
  const descriptors = Object.getOwnPropertyDescriptors(mixin)
  // const all = Object.getOwnPropertyNames(mixin)

  // const propNames = Object.keys(descriptors)
  // const methodNames = all.filter(p => !propNames.includes(p))

  // for (const method of methodNames) {
  //   _class.prototype[method] = mixin[method]
  // }

  Object.defineProperties(_class.prototype, descriptors)
}