Optional Chaining Operator in Typescript

javascript typescript optional chaining
cwtuan picture cwtuan · Aug 23, 2017 · Viewed 14.8k times · Source

In javascript, Optional Chaining Operator is supported by the babel plugin.

But I can't find how to do this in Typescript. Any idea?

Answer

Ryan Cavanaugh picture Ryan Cavanaugh · Aug 23, 2017

At time of writing, TypeScript does not support the optional chaining operator. See discussion on the TypeScript issue tracker: https://github.com/Microsoft/TypeScript/issues/16

As a warning, the semantics of this operator are still very much in flux, which is why TypeScript hasn't added it yet. Code written today against the Babel plugin may change behavior in the future without warning, leading to difficult bugs. I generally recommend people to not start using syntax whose behavior hasn't been well-defined yet.

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