Ember workarounds and fixes for TS 3.4 #33420
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1. Ember-data tests had the wrong return type in a couple of places. TS 3.4 catches this error, and this PR fixes it. 2. Ember-data's Model class became invariant in 3.4 because of its use of the `this` type. This PR uses a `this` parameter with a method-local type parameter to avoid using Model's `this` type. 3. Ember v2's tests were broken by TS 3.4's more complete return-type inference, which caused a variable declaration's type annotation to break inference through contextual typing. This PR converts the type annotation to type parameters on the call, which short-circuits inference entirely. It's also shorter.
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@mike-north This may not pass CI until tomorrow when Microsoft/TypeScript#29981 is in typescript@next, but maybe you can take a look now to see whether the changes make sense. |
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@sandersn Thank you for submitting this PR! 🔔 @jedmao @bttf @dwickern @chriskrycho @theroncross @mfeckie @alexlafroscia @mike-north @BryanCrotaz - please review this PR in the next few days. Be sure to explicitly select If no reviewer appears after a week, a DefinitelyTyped maintainer will review the PR instead. |
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@sandersn The Travis CI build failed! Please review the logs for more information. Once you've pushed the fixes, the build will automatically re-run. Thanks! |
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I just published |
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I just published |
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Thanks @sandersn this is a huge help! |
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Just want to reiterate @mike-north's comment: thank you so much for figuring this out and getting everything straightened out, @sandersn! |
thistype. This PR uses athisparameter with a method-local type parameter to avoid using Model'sthistype.After microsoft/TypeScript#29981 is merged, Ember types should compile cleanly with typescript@next.