Array.remove safe polyfill

arrayRemoveMethod.js

// remove the first instance of an item inside an array  (extends native array object)
if (!Array.prototype.remove) {
  Array.prototype.remove = function remove (item) { // eslint-disable-line no-extend-native
    if (!(this || Array.isArray(this))) {
      throw new TypeError()
    }

    if (this.indexOf(item) !== -1) {
      this.splice(this.indexOf(item), 1)
      return this
    }

    // handles cases where item is a finite index and element at given index is defined
    if (typeof this[item] !== 'undefined' && item >= 0 && Number.isFinite(item)) {
      this.splice(item, 1)
      return this
    }
  }
}

Happy new year,
(…happy reading-all-the-forgotton-github-notifications-from-last-year LOL)

Thanks for enlightening me. There is always something new to learn about JavaScript - even after decades :D