Erik Brinkman 4d4ea66a9c update contextual discrimination to include omitted members (#43633) ...

This diff extends the types checked by
discriminateContextualTypeByObjectMembers and
discriminateContextualTypeByJSXAttributes to also include any optional
components in the type union.

fixes #41759 although it doesn't address the better error reporting for
their last repro, which I'm not sure how to address.

2021-04-24 14:26:29 -07:00

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baselines/reference

update contextual discrimination to include omitted members (#43633)

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cases

update contextual discrimination to include omitted members (#43633)

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lib

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