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Fix regression where displayValue crashes #2087

Merged
merged 2 commits into from
Dec 12, 2022
Merged

Fix regression where displayValue crashes #2087

merged 2 commits into from
Dec 12, 2022

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RobinMalfait
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It regressed in the sense that it now uses displayValue for the
defaultValue as well, but if nothing is passed it would crash.

Right now, it makes sure to only run the displayValue value on the
actual value and the actual default value if they are not undefined.

Note: if your displayValue is implemented like (value) => value.name,
and your value is passed as null, it will still crash (as expected)
because then you are in charge of rendering something else than null. If
we would "fix" this, then no value can be rendered instead of null.

Fixes: #2084

It regressed in the sense that it now uses `displayValue` for the
`defaultValue` as well, but if nothing is passed it would crash.

Right now, it makes sure to only run the displayValue value on the
actual value and the actual default value if they are not undefined.

Note: if your displayValue is implemented like `(value) => value.name`,
and your `value` is passed as `null`, it will still crash (as expected)
because then you are in charge of rendering something else than null. If
we would "fix" this, then no value can be rendered instead of `null`.

Fixes: #2084
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Combobox displayValue regression in @headlessui/[email protected]
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