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#52836 breaks fragmented-store on DT #53382

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#53383
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#52836 breaks fragmented-store on DT#53382
#53383
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jakebailey
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BugA bug in TypeScriptFix AvailableA PR has been opened for this issueRecent RegressionThis is a new regression just found in the last major/minor version of TypeScript.
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TypeScript 5.1.0

Description

@sandersn
Nathan Shively-Sanders (sandersn)
opened on Mar 20, 2023

#52836 broke fragmented-store on Definitely Typed. Here's a repro that doesn't depend on React:

type StateHook<S> = () => [S, unknown];

type StoreUtils<Store extends { [K: string]: any }> = Omit<{
    [K in keyof Store as `use${Capitalize<string & K>}`]: StateHook<Store[K]>
}, 'useStore'> & {
  Provider: unknown,
  useStore: StateHook<Store>
};

declare function createStore<Store extends { [K: string]: any }>(store: Store): StoreUtils<Store>;

const { Provider, useUsername, useAge, useStore } = createStore({
  username: "Aral",
  age: 31
});

Activity

  1. Nathan Shively-Sanders (sandersn)
    assigned
    Jake Bailey (jakebailey)
    on Mar 20, 2023
  2. Nathan Shively-Sanders (sandersn)
    added this to the TypeScript 5.1.0 milestone on Mar 20, 2023
  3. Nathan Shively-Sanders (sandersn)
    added
    BugA bug in TypeScript
    Recent RegressionThis is a new regression just found in the last major/minor version of TypeScript.
    on Mar 20, 2023

  4. fatcerberus commented on Mar 20, 2023

    @fatcerberus
    Bruce Pascoe (fatcerberus)
    on Mar 20, 2023

    fragmented-store types

    I have literally never heard this term ever

  5. sandersn commented on Mar 20, 2023

    @sandersn
    Nathan Shively-Sanders (sandersn)
    on Mar 20, 2023
    MemberAuthor

    Sorry, it's the name of a package on Definitely Typed. Edited the OP for clarity.

  6. TypeScript Bot (typescript-bot)
    added
    Fix AvailableA PR has been opened for this issue
    on Mar 20, 2023
  7. Jake Bailey (jakebailey)
    closed this as completedin #53383on Mar 20, 2023
  8. microsoft
    locked as resolved and limited conversation to collaborators on Oct 22, 2025
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BugA bug in TypeScriptFix AvailableA PR has been opened for this issueRecent RegressionThis is a new regression just found in the last major/minor version of TypeScript.

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