Microsoft/TypeScript
ImportType attributes can include JS expressions
オープン
#62,179 opened on 2025/08/03
BugDomain: ES ModulesHelp Wanted
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説明
🔎 Search Terms
importtype, import type parsing
🕗 Version & Regression Information
- This changed between versions 4.6.4 and 4.7.4 (with the old
assertkeyword)
⏯ Playground Link
💻 Code
declare module "wat";
type _ = typeof import("wat", {
assert: {
a: (() => {
console.log("why can you write js here????");
})(),
}
});
🙁 Actual behavior
parser accepts arbitrary JS expressions inside a type expression
🙂 Expected behavior
parser only allows string literal values or arbitrary type values
Additional information about the issue
No response