Description

Mark Fulton (mfulton26)

opened on Jun 3, 2021

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TypeScript/src/lib/es2019.object.d.ts

Line 8 in d2516fa

fromEntries<T = any>(entries: Iterable<readonly [PropertyKey, T]>): { [k: string]: T };

const record = Object.fromEntries([[Symbol.for("1"), "hi"]]);
console.log(record[Symbol.for("1")]);

error: TS2538 [ERROR]: Type 'symbol' cannot be used as an index type.
console.log(record[Symbol.for("1")]);
                   ~~~~~~~~~~~~~~~

the return type should account for objects built with symbols for keys (e.g. through a generic type or something)

Reacted by Martin Johns

Activity

1. jcalz commented on Jun 3, 2021

   

   Joe Calzaretta (jcalz)

   on Jun 3, 2021

   Contributor

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   There's a whole template you're supposed to fill out when you file a bug here, to help the TS team triage and respond.

   Anyway I don't think much can be done here until something like #35909 and #26797 are dealt with. Also relevant: #37457, with the comment: "Symbols are still dropped on the floor, just like the rest of the compiler."
2. mfulton26 commented on Jun 4, 2021

   

   Mark Fulton (mfulton26)

   on Jun 4, 2021

   ContributorAuthor

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   Weird, I was never prompted with a template. Maybe that is because I made the issue from clicking the referenced line of code...

   Reacted by Joe Calzaretta
3. Ryan Cavanaugh (RyanCavanaugh)

   added

   DuplicateAn existing issue was already createdAn existing issue was already created

   on Jun 10, 2021
4. TypeScript Bot (typescript-bot)

   closed this as completedon Jun 13, 2021
5. typescript-bot commented on Jun 13, 2021

   

   TypeScript Bot (typescript-bot)

   on Jun 13, 2021

   Contributor

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   This issue has been marked as a 'Duplicate' and has seen no recent activity. It has been automatically closed for house-keeping purposes.
6. microsoft

   locked as resolved and limited conversation to collaborators on Oct 21, 2025

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