modeling/src/geometries/path2/isA.js

/**
 * Determin if the given object is a path2 geometry.
 * @param {Object} object - the object to interogate
 * @returns {Boolean} true if the object matches a path2
 * @alias module:modeling/geometries/path2.isA
 */
const isA = (object) => {
  if (object && typeof object === 'object') {
    // see create for the required attributes and types
    if ('points' in object && 'transforms' in object && 'isClosed' in object) {
      // NOTE: transforms should be a TypedArray, which has a read-only length
      if (Array.isArray(object.points) && 'length' in object.transforms) {
        return true
      }
    }
  }
  return false
}

module.exports = isA