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Discussion on: Using Property Decorators in Typescript with a real example

navjot50 profile image
Navjot • Edited on

There is a reason where every instance of User class is having the same value for the password. The article author is binding the properties to the target argument in the decorator function. According to the docs the target parameter in the decorator function is the prototype of the class (in this case User.prototype). So when the author did Object.defineProperty(target, propertyKey, { get: getter, set: setter }), then the property is being bound to the User.prototype object and not the current object. Since, the property is defined on the prototype it is available to all the instances of that class.