Method getParentFirstArray

external/.scrollLibs.js:15949–15956

()

    return this._getStack(relativeTo).length
  }
  getParentFirstArray() {
    const levels = this._getLevels()
    const arr = []
    Object.values(levels).forEach(level => {
      level.forEach(item => arr.push(item))
    })
    return arr
  }
  _getLevels() {
    const levels = {}
    this.topDownArray.forEach(particle => {