Microsoft/TypeScript
Vedi su GitHub[isolatedDeclarations] Type of const variable declared with template literal expression containing only literals still requires explicit annotation
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#59.157 aperta il 6 lug 2024
Domain: flag: isolatedDeclarationsHelp WantedPossible Improvement
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Descrizione
🔎 Search Terms
isolated declarations template literal expression
🕗 Version & Regression Information
- This is the behavior in every version I tried
⏯ Playground Link
💻 Code
export let foo = `${''}`;
export const bar = `${''}`;
export function baz() {
return `${''}`;
}
🙁 Actual behavior
bar has a type error:
Variable must have an explicit type annotation with --isolatedDeclarations.(9010)
input.tsx(3, 14): Add a type annotation to the variable bar.
foo would also have a type error if as const was added to the expression.
🙂 Expected behavior
No type error
Additional information about the issue
fun fact: I accidentally discovered this behavior when I found that oxc-transform has type errors for both const, let, and return types.