Use destructured names as fallback labels when expanding parameters#57619
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Andarist wants to merge 13 commits intomicrosoft:mainfrom
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Use destructured names as fallback labels when expanding parameters#57619Andarist wants to merge 13 commits intomicrosoft:mainfrom
Andarist wants to merge 13 commits intomicrosoft:mainfrom
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Andarist
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jakebailey
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Mar 20, 2024
jakebailey
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Mar 20, 2024
jakebailey
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Mar 22, 2024
src/compiler/checker.ts
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| if (isTupleType(restType)) { | ||
| return [expandSignatureParametersWithTupleMembers(restType, restIndex, restName)]; | ||
| return [expandSignatureParametersWithTupleMembers(restType, restIndex, restName, getFallbackExpandedLabels(restType, restDeclaration))]; |
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Another thing I realized is that we're going to be calculating this fallback list every time we do this, even though it's not always used. But, I'm not sure how to make that lazy either.
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ye, this is somewhat unfortunate but I don't think it's a particularly costly operation to create this so I just don't mind having this eager here
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@typescript-bot test it |
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Hey @jakebailey, the results of running the DT tests are ready. Everything looks the same! |
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@jakebailey Here are the results of running the user tests comparing Everything looks good! |
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@jakebailey Here they are:
tscComparison Report - baseline..pr
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@jakebailey Here are the results of running the top 400 repos comparing Everything looks good! |
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Hm, hard to say if that vscode result is just noise or not. @typescript-bot perf test this faster |
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@jakebailey Here they are:
tscComparison Report - baseline..pr
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Retesting with new benchmarks @typescript-bot perf test this faster |
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@jakebailey Here they are:
tscComparison Report - baseline..pr
System info unknown
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Developer Information: |
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@typescript-bot pack this |
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Hey @jakebailey, I've packed this into an installable tgz. You can install it for testing by referencing it in your and then running There is also a playground for this build and an npm module you can use via |
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for function foo(first: string, ...args: [first: number, second: number]) {
}are we okay with this behavior?
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jakebailey
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Apr 19, 2024
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Also, on second thought, I think that this should actually be first, second, not first, named; after all, the type could be coming from far far away, but the names from the rest are actually what's relavent for the function call...
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I'd say no; now that we have two sources of truth, we should probably try and remember which names we've already used 🙁 |
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It's not perfect but it's nothing new (TS playground) type T0 = [first: string];
type T1 = [first: number, ...T0];
// ^? type T1 = [first: number, first: string]I'd prefer to fix this separately. Unless you feel it's crucial for this to land and that if I'd do this work here this PR would move further swiftly~.
I pushed out a commit to PR the local "labels" in those scenarios. |
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closes #56289