78214e72ea
Previously, when `ngcc` was reflecting on class members it did not account for the fact that a member could be of the kind `IndexSignature`. This can happen, for example, on abstract classes (as is the case for [JsonCallbackContext][1]). Trying to reflect on such members (and failing to recognize their kind), resulted in warnings, such as: ``` Warning: Unknown member type: "[key: string]: (data: any) => void; ``` While these warnings are harmless, they can be confusing and worrisome for users. This commit avoids such warnings by detecting class members of the `IndexSignature` kind and ignoring them. [1]: https://github.com/angular/angular/blob/4659cc26e/packages/common/http/src/jsonp.ts#L39 PR Close #33198