Type Declarations for Iterator.from

[chances]

The TypeScript team have resecently made some changes to the Iterator group of interfaces, protocols, and their related type definitions. For context, the TypeScript team is in the middle of making changes to the type declarations regarding iterators after TC39 recently landed changes for iterator helpers.

Either I'm confused and am using the types incorrectly, or the version of TypeScript being used by Deno is outdated.

My apologies if this is the incorrect repository.

Reproduction

index.ts:

return Iterator.from([1, 2, 3]).map(x => x * 2);

deno.json:

{
  "$schema": "https://raw.githubusercontent.com/denoland/deno/main/cli/schemas/config-file.v1.json",
  "exports": "./index.ts",
  "compilerOptions": {
    "lib": ["ESNext", "DOM.Iterable", "deno.window"]
  }
}

Error reported by the Deno language server

ts: 'Iterator' only refers to a type, but is being used as a value here.

Deno Runtime Versions

Deno 2.0.5 (stable, release, x86_64-pc-windows-msvc)
V8 12.9.202.13-rusty
TypeScript 5.6.2

References

• PSA: potential lib breaking change after iterator-helpers proposal microsoft/TypeScript#54481
• add types for iterator helpers proposal microsoft/TypeScript#58222
• Improve Iterator Helper Type Signatures microsoft/TypeScript#59926

[petamoriken]

TypeScript 5.7 is in beta now and will be released on 2024-11-21.

Please see #26705

[dsherret]

Let's track this in #26950