Find first callable/constructable type in union when appropriate #26895
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weswigham
reviewed
Sep 5, 2018
| Type '(a: string, b: number) => string | number' is not assignable to type '(a: string, b: number) => number'. | ||
| Type 'string | number' is not assignable to type 'number'. | ||
| Type 'string' is not assignable to type 'number'. | ||
| Type '(a: string, b: number) => string | number' is not assignable to type '(a: string, b: number) => string'. |
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We could avoid these baseline changes if we choose the last matching invokable instead of the first.
RyanCavanaugh
previously requested changes
Sep 5, 2018
DanielRosenwasser
dismissed
RyanCavanaugh’s stale review
Picking the last type isn't any better, so I don't think it's worth changing the implementation just to maintain baselines. Plus, I would argue picking the first signature is usually more desirable for anonymous arrow types anyway.
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Fixes #26449