Dexie.js: import 'dexie-observable': Cannot augment module 'Dexie' with value exports because it resolves to a non-module entity.

I’m trying to include dexie-observable, however the TS transpiler seems to have an issue with that:

ERROR in node_modules/dexie-observable/dist/dexie-observable.d.ts(13,15): error TS2649: Cannot augment module 'Dexie' with value exports because it resolves to a non-module entity.
node_modules/dexie-observable/dist/dexie-observable.d.ts(17,29): error TS2694: Namespace '"@paperwork/web/node_modules/dexie/dist/dexie".Dexie' has no exported member 'Observable'.
node_modules/dexie-observable/dist/dexie-observable.d.ts(34,40): error TS2694: Namespace '"@paperwork/web/node_modules/dexie/dist/dexie".Dexie' has no exported member 'Observable'.
node_modules/dexie-observable/dist/dexie-observable.d.ts(37,39): error TS2694: Namespace '"@paperwork/web/node_modules/dexie/dist/dexie".Dexie' has no exported member 'Observable'.
node_modules/dexie-observable/dist/dexie-observable.d.ts(46,60): error TS2694: Namespace '"@paperwork/web/node_modules/dexie/dist/dexie".Dexie' has no exported member 'Observable'.
node_modules/dexie-observable/dist/dexie-observable.d.ts(99,56): error TS2694: Namespace '"@paperwork/web/node_modules/dexie/dist/dexie".Dexie' has no exported member 'DexieEventSet'.
node_modules/dexie-observable/dist/dexie-observable.d.ts(120,22): error TS2339: Property 'Observable' does not exist on type 'DexieConstructor'.
src/app/app.component.ts(51,11): error TS2345: Argument of type '"changes"' is not assignable to parameter of type '"versionchange"'.

Also, this time it doesn’t seem to be caching related. 😃

About this issue

Original URL
State: closed
Created 5 years ago
Comments: 15

Commits related to this issue

Moved back to 2.0.4 See https://github.com/dfahlander/Dexie.js/issues/847 for more info on this. — committed to paperwork/web by mrusme 5 years ago

Most upvoted comments

For anyone looking for a dirty fix while waiting for official typings, the simplest solution for us was to just remove the typings in the build pipeline to get rid of the build errors. Obviously this isn’t a fix, but I just needed it to compile in a build pipeline.

- npm install
- rm node_modules/dexie-syncable/dist/dexie-syncable.d.ts
- rm node_modules/dexie-observable/api.d.ts
- rm node_modules/dexie-observable/dist/dexie-observable.d.ts
- ng build

The only other issue was Dexie.Syncable was therefor not a valid member. Fixed by (Dexie as any).Syncable

Not proud of these as fixes, but it works temporarily for someone with little type extension experience.

Good luck

oogghh on May 26, 2020

I’ve published new versions of dexie-observable and dexie-syncable on npm that should be type-wise compatible with Dexie 3.0. Any feedback on these would be much apprechiated:

npm i dexie-observable@next dexie-syncable@next

Should give you versions 3.0.0-beta.9 on both of them.

dfahlander on Sep 8, 2020

error still occurred on 3.0.1

juzhiyuan on Jun 13, 2020

Hello @dfahlander , The same problem occurs with the latest releases:

 "dexie": "^3.0.0-rc.6"
 "dexie-observable": "^1.0.0-beta.6"

The issue is with the typings:

No overload matches this call.
  The last overload gave the following error.
    Argument of type '"changes"' is not assignable to parameter of type '"versionchange"'.ts(2769)
dexie.d.ts(446, 3): The last overload is declared here.

samratarmas on Apr 4, 2020