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dexie validation 7.0.0-dev.20260219.1 works, 7.0.0-dev.20260222.1 fails #2873

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dexie validation 7.0.0-dev.20260219.1 works, 7.0.0-dev.20260222.1 fails#2873

Description

@AntonOfTheWoods
Anton Melser (AntonOfTheWoods)
opened on Feb 23, 2026

I'm now getting:

> tsgo --noEmit                                                         
                                                                        
../../node_modules/.pnpm/dexie@4.3.0/node_modules/dexie/dist/dexie.d.ts:1202:23 - error TS1540: A 'namespace' declaration should not be declared 
using the 'module' keyword. Please use the 'namespace' keyword instead.                                                                          
                                                                                                                                                 
1202 export declare module Dexie {                                                                                                               
                           ~~~~~                                                                                                                 
                                                                                                                                                 
                                                                                                                                                 
Found 1 error in ../../node_modules/.pnpm/dexie@4.3.0/node_modules/dexie/dist/dexie.d.ts:1202
                                                                        
 ELIFECYCLE  Command failed with exit code 2.

With the latest 7.0.0-dev.20260222.1, 7.0.0-dev.20260219.1 validates with no issues. I had a quick look through the PRs but couldn't see anything...

Activity

  1. jakebailey commented on Feb 23, 2026

    @jakebailey
    Jake Bailey (jakebailey)
    on Feb 23, 2026
    Member

    This is intentional. These are deprecated in TS 6.0 (silenceble with "ignoreDeprecations": "6.0"), but are a hard error in TS 7.0.

    #2760, microsoft/TypeScript#62876

  2. jakebailey commented on Feb 23, 2026

    @jakebailey
    Jake Bailey (jakebailey)
    on Feb 23, 2026
    Member

    But perhaps this implies that it's still unsafe to do this in declaration files.

    It's beyond me why anyone would still be publishing things like this, but, https://github.com/dexie/Dexie.js/blob/d59cc44aaf8acba93503f620cfb0d81d003875c1/src/public/index.d.ts#L42 is handwritten, and they are still on TS 5.6.

    You can patch the dep for now, at least...

  3. siphosenkosindhlovu commented on Feb 23, 2026

    @siphosenkosindhlovu
    Siphosenkosi Mthulisi Ndhlovu (siphosenkosindhlovu)
    on Feb 23, 2026

    I can confirm this also happens for playwright-core@1.55.0

  4. jakebailey commented on Feb 23, 2026

    @jakebailey
    Jake Bailey (jakebailey)
    on Feb 23, 2026
    Member

    Playwright already fixed this, in microsoft/playwright#38558, released in v1.58.

  5. AntonOfTheWoods commented on Feb 23, 2026

    @AntonOfTheWoods
    Anton Melser (AntonOfTheWoods)
    on Feb 23, 2026
    Author

    Ok thanks. I guess the claim on the readme Parsing/scanning done Exact same syntax errors as TS 6.0 isn't strictly true then. If something is deprecated it isn't an error, right? I'll submit a fix to dexie if one isn't queued.

  6. Anton Melser (AntonOfTheWoods)
    closed this as completedon Feb 23, 2026

  7. siphosenkosindhlovu commented on Feb 23, 2026

    @siphosenkosindhlovu
    Siphosenkosi Mthulisi Ndhlovu (siphosenkosindhlovu)
    on Feb 23, 2026

    Playwright already fixed this, in microsoft/playwright#38558, released in v1.58.

    Ah, must have missed it. Thank you

  8. jakebailey commented on Feb 23, 2026

    @jakebailey
    Jake Bailey (jakebailey)
    on Feb 23, 2026
    Member

    Ok thanks. I guess the claim on the readme Parsing/scanning done Exact same syntax errors as TS 6.0 isn't strictly true then

    I guess, if we're being pedantic...

  9. AntonOfTheWoods commented on Feb 23, 2026

    @AntonOfTheWoods
    Anton Melser (AntonOfTheWoods)
    on Feb 23, 2026
    Author

    I guess, if we're being pedantic...

    Pedantry is typically pretty good in programming contexts...

  10. husayt commented on Feb 25, 2026

    @husayt
    Huseyn Guliyev (husayt)
    on Feb 25, 2026

    But perhaps this implies that it's still unsafe to do this in declaration files.

    It's beyond me why anyone would still be publishing things like this, but, https://github.com/dexie/Dexie.js/blob/d59cc44aaf8acba93503f620cfb0d81d003875c1/src/public/index.d.ts#L42 is handwritten, and they are still on TS 5.6.

    You can patch the dep for now, at least...

    got the same problem with dexie, but ignoreDeprecations: "6.0" doesn't help

  11. jakebailey commented on Feb 25, 2026

    @jakebailey
    Jake Bailey (jakebailey)
    on Feb 25, 2026
    Member

    Yes, because this codebase is TS 7.0, where we've entirely removed things that were deprecated in TS 6.0.

  12. Jake Bailey (jakebailey)
    marked skipLibCheck is not working as intended on skipping modules-as-namespaces error #2909 as a duplicate of this issue on Feb 26, 2026
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