fix typings for PartialModelGraph and nullable fields #2404
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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
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…d relations when the type of relation's field is defined as nullable with `| null`.
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LGTM, thanks @falkenhawk ! |
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ported from ovos#16 and adjusted for a typescript perf workaround which landed in 2cefc77
Handle
| nullunions properly. (e.g. for nullableBelongsToOneRelations).Before
PartialModelGraphwas convertingfield: Model | null;tofield?: 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