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A comment on V8 adds support for top-level await. Parent comment

Re:V8 adds support for top-level await by Zarel on Tuesday September 24, 2019 @11:11PM (#21067235)
No, while this is sometimes used for private properties/methods, TypeScript never used it. TypeScript's private properties/methods are just compile-time errors, they're still public in the generated code.
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Re:V8 adds support for top-level await by alexanderdmitri on Thursday September 26, 2019 @12:07AM (#21078057)
You're right[0], which is weird because they got most of the way there. I guess I just assumed since they were leveraging IIFEs this would be a natural use case. I'd be interested in knowing why they didn't actually.

According to this[1] exchange on Stack Overflow, the IIFE is used by TypeScript because of other scoping issues (specifically protecting class properties before instantiation and defining interfaces).

[0] https://yakovfain.com/2015/06/30/the-private-in-typescript-i...

[1] https://stackoverflow.com/questions/56086411/why-does-typesc...

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