A code sample from the article: https://www.joshwulf.com/blog/2020/02/providing-a-semantic-api/

signature.js

//global variable
const GlobalMembersArray  =[];

/**
 * Create a new member.
 * @param {Object} memberData - The data for the member to create.
 * @param {string} memberData.id - The unique id of the member.
 * @param {string} memberData.password - The member's password.
 */
function Member({id, password}){
  this.id          = id; 
  this.password    = password
}
  
const member1 = new Member({id: "m001", password: "123"});

GlobalMembersArray.push(member1);