Method toString

src/ytype.js:1316–1336

* @param {object} opts * @param {boolean} [opts.forceTag] enforce creating a surrouning tag, even if it is null.

({ forceTag = false } = {})

   * @param {boolean} [opts.forceTag] enforce creating a surrouning <name /> tag, even if it is null.
   */
  toString ({ forceTag = false } = {}) {
    /**
     * @type {Array<[string|number,string]>}
     */
    const attrs = []
    this.forEachAttr((attr, key) => {
      attrs.push([(key), /** @type {any} */ (attr) instanceof YType ? attr.toString({ forceTag: true }) : JSON.stringify(attr)])
    })
    const attrsString = (attrs.length > 0 ? ' ' : '') + attrs.sort((a, b) => a[0].toString() < b[0].toString() ? -1 : 1).map(attr => attr[0] + '=' + attr[1]).join(' ')
    /**
     * @type {string}
     */
    const children = this.toArray().map(c => s.$string.check(c) ? c : (c instanceof YType ? c.toString({ forceTag: true }) : JSON.stringify(c))).join('')
    if (this.name == null && !forceTag && attrs.length === 0) {
      return children
    }
    if (this.length === 0) {
      return `<${this.name ?? ''}${attrsString} />`
    }
    return `<${this.name ?? ''}${attrsString}>${children}</${this.name ?? ''}>`
  }

  /**
   * Returns an Array with the result of calling a provided function on every