Supporting exactOptionalPropertyTypes #2111
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`signal` key has defined its key as optional, not necessarily the value even though this happens implicitly. No key means no value which translates to `undefined`:
```ts
signal?: AbortSignal | null;
```
To support `exactOptionalPropertyTypes` it would have to be defined as:
```ts
signal?: AbortSignal | null | undefined;
```
While you could say the key isn't optional (removing `?`), which then requires an explicit `undefined` value:
```ts
signal: AbortSignal | null | undefined;
```
That would require an explicit undefined being passed.
Given this key is part of TS definitions and module augmentation is overkill, just "oring" from undefined to an expected value (in this case `null`) solves the problem.
|
saihaj
requested changes
Nov 17, 2022
Closed
|
Thanks for the PR! |
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YogaServerOptionshas a bunch of keys that are defined as optional, but haven't declared their value as such, even though this happens implicitly since no key means no value which translates toundefined:To support
exactOptionalPropertyTypesand retains its API it would have to be defined as:While you could say the key isn't optional (removing
?), which then requires an explicitundefinedvalue:That would require an explicit undefined being passed and would break builds and alter its API.