SOURCE

function myInstance(instance,origin){
    if(instance===null) return false 
    const type=typeof instance
    if(type !=='function' && type!=='object'){
        return false 
    }
    
    let tempInstance=instance
    while(tempInstance){
        if(tempInstance.__proto__==origin.prototype){
            return true
        }
        else tempInstance=tempInstance.__proto__
    }
    return false
}

console.log(myInstance([],Array))