point.js

export class Point {
  constructor(x, y) {
    this.x = x
    this.y = y
  }

  equalTo(other) {
    return areEqual(this.x, other.x) && areEqual(this.y, other.y)
  }
  addVector(vector) {
    return new Point(this.x + vector.x, this.y + vector.y)
  }
  distanceTo(other) {
    return Math.hypot(this.x - other.x, this.y - other.y)
  }
  array() {
    return [this.x, this.y]
  }
  vectorTo({ x, y }) {
    return new Vector(x - this.x, y - this.y)
  }
}