search

statelyai / xstate

Actor-based state management & orchestration for complex app logic.
https://stately.ai/docs
MIT License
26.98k stars 1.24k forks source link

Type 'NonNullable<TStateValue[K]>' does not satisfy the constraint 'StateValue'.Bug: #4808

Closed asheeshmathur closed 6 months ago

asheeshmathur commented 6 months ago

XState version

XState version 5

Description

Using TS v 5.4 planning to create standalone or backend application. With even with single import, statement getting following error ../node_modules/xstate/dist/declarations/src/State.d.ts:5:49 - error TS2344: Type 'NonNullable<TStateValue[K]>' does not satisfy the constraint 'StateValue'.

Am using following settings in tconfig.js "compilerOptions": { "strictNullChecks": true, "skipLibCheck": true, "lib": ["es2021", "DOM"], "target": "es2021",

Expected result

Success

Actual result

../node_modules/xstate/dist/declarations/src/State.d.ts:5:49 - error TS2344: Type 'NonNullable<TStateValue[K]>' does not satisfy the constraint 'StateValue'. "compilerOptions": { "strictNullChecks": true, "skipLibCheck": true, "lib": ["es2021", "DOM"], "target": "es2021",

Reproduction

XState 5

Additional context

No response

Andarist commented 6 months ago

Please always try to share a repro case in a runnable form - either by providing a git repository to clone or a codesandbox. OSS maintainers usually can't afford the time to set up the repro, even if exact steps are given.

Andarist commented 6 months ago

I think the problem here is lack of the strict mode in the consuming project and that’s a hard requirement for XState’s types to work. If you manage to repro this with strict mode enabled please let us know and we’ll reopen the issue