Microsoft/TypeScript

Computed property type is invalid in type emitted if it is a unique symbol coming from a property that has a space in the name

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#60,823 opened on Dec 19, 2024

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BugDomain: Declaration EmitHelp Wanted

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Description

🔎 Search Terms

computed property unique symbols declaration emit

🕗 Version & Regression Information

  • This changed between versions 3.7 and 3.8

⏯ Playground Link

Playground Link

💻 Code

class T {
    static readonly ['A a']: unique symbol;
}
let x = {
    foo:T['A a']
} as const;

🙁 Actual behavior

The type of x is emitted as { readonly foo: typeof T.A a; } which is invlaid.

🙂 Expected behavior

Declaration emit should be valid

Additional information about the issue

No response

Contributor guide

Research direction
Trace the declaration emit code for computed properties that resolve to unique symbols and ensure quoting of property names with spaces.
Tech stack
typescript
Domain
compilers
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
None
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35