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fix typings for PartialModelGraph and nullable fields #2404

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merged 2 commits into from
Jun 29, 2023

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falkenhawk
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@falkenhawk falkenhawk commented Apr 22, 2023

ported from ovos#16 and adjusted for a typescript perf workaround which landed in 2cefc77

Handle | null unions properly. (e.g. for nullable BelongsToOneRelations).

Before PartialModelGraph was converting field: Model | null; to field?: Expression<Model | null>, and typescript throws errors for graphs with partial sub-graphs for those nullable relations. (expecting full instance of the model class)
Now it converts it properly to field?: PartialModelGraph<Model> | null 🎉

fixes the issue mentioned in the last paragraph of the #1774 (comment) by @jeremy-w

Handle `| null` unions properly. (e.g. for nullable `BelongsToOneRelations`).

Before `PartialModelGraph` was converting `field: Model | null;` to `field?: Expression<Model | null>`, and typescript throws errors for graphs with partial sub-graphs for those nullable relations. (expecting full instance of the model class)
Now it converts it properly to `field?: PartialModelGraph<Model> | null` 🎉
@falkenhawk falkenhawk force-pushed the fix-typings-for-graphs-with-nullable-fields branch from 479a03d to 69a172c Compare April 22, 2023 18:03
…d relations

when the type of relation's field is defined as nullable with `| null`.
@lehni
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lehni commented Jun 29, 2023

LGTM, thanks @falkenhawk !

@lehni lehni merged commit 1062bc3 into Vincit:master Jun 29, 2023
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2 participants