Microsoft/TypeScript
Ver no GitHubTrailing comma in dynamic import should be allowed also when used in a `typeof` type
Open
#61.489 aberto em 26 de mar. de 2025
Domain: ES ModulesHelp WantedPossible Improvement
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Description
🔎 Search Terms
trailing comma dynamic import
🕗 Version & Regression Information
- This is the behavior in every version I tried
⏯ Playground Link
💻 Code
declare module "foo" {}
const v = await import("foo",);
type T = typeof import("foo",);
const v2 = await import("foo",{},);
type T2 = typeof import("foo",{},);
🙁 Actual behavior
The trailing commas in the type-level import()s are reported as syntax error
🙂 Expected behavior
The syntax of import() at the type-level should match the one at the value level, thus allowing trailing commas.
Additional information about the issue
Note that the error was correct before import attributes, but import attributes changed the dynamic import syntax to allow trailing commas.