Method constructor

source/list.js:5–13

(iterable = [])

//======//
export class LinkedList {
  constructor(iterable = []) {
    this.start = undefined;
    this.end = undefined;
    this.isEmpty = true;

    for (const item of iterable) {
      this.push(item);
    }
  }

  *[Symbol.iterator]() {
    let link = this.start;