microsoft / microsoft/TypeScript
[5.5 regression] "Maximum call stack size exceeded" when serializing nested self-referencing class expressions
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Nobody has claimed this yet.
Bug
Domain: Declaration Emit
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Description
🔎 Search Terms
dts declaration serializing class expression self-referencing nested
🕗 Version & Regression Information
- This changed between versions 5.4.x and 5.5.x
⏯ Playground Link
💻 Code
const A = class A<T> {
child!: InstanceType<typeof A.B<T>>;
static B = class B<T> {
parent!: T;
};
};
🙁 Actual behavior
it crashes
🙂 Expected behavior
it shouldn't crash 😉
Additional information about the issue
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the provided Playground link and the nested self-referencing class expression from the issue to reproduce the serialization crash. Trace the compiler path that serializes the generated declaration and verify that the same input completes without a maximum call stack error, adding a regression test if the relevant test location is identified.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 32/100