Working around loss of support for type constraint being self

Question

This is something I\'ve been doing in older versions of TypeScript and I use this method in C#, but it doesn\'t work in the latest 1.0 version of TypeScript.

Here\'s

Answer 1

You are no longer allowed to use T here:

class Base>
--------------------------^

You either have to make your class non-generic or use:

class Base>

The reason given for this was to make the compiler simpler:

In our continued efforts to simplify the language, we're simplifying what generic constraints can entail.

The added overhead in terms of type-checking, error-reporting, and design complexity did not add enough additional expressiveness to make it worthwhile for 1.0. We may revisit this in future versions of TypeScript.

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