How Private are TypeScript\'s Private Members?

Unraveling Private Member Mystery in TypeScript

TypeScript's private member implementation has been the subject of perplexity for many developers. Despite IntelliSense's restriction on accessing private members, the members remain accessible in pure JavaScript. This raises questions about TypeScript's private member implementation.

The Enigmatic Nature of Private Members

To comprehend TypeScript's private members, it's crucial to understand that the enforcement of privacy is limited to the compiler. While a declared private member is implemented as a regular property, code outside the class is prohibited from accessing it.

The Illusion of True Privacy

If the intention is to enforce complete privacy, a different approach is required. Instead of defining the private property as a class member, it should be declared as a local variable within a function scope inside the object's creation code. This prevents access to the property as a class member using the "this" keyword.

In summary, while TypeScript provides a notion of private members, their privacy is enforced only within the compiler. Truly private properties must be declared as local variables within the object's creation code, precluding access using the "this" keyword.

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