Microsoft/TypeScript
Vedi su GitHub'Export as namespace' issue in generating ambient code of same namespace
Open
#47.220 aperta il 22 dic 2021
BugDomain: JS EmitHelp Wanted
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Descrizione
Bug Report
When using "export as namespace" feature in a declaration file, the exported classes are working as intended in 'legacy' ambient-style TS code that is still using namespaces, but the emitted .JS code lacks of the namespace in the case of namespace merging.
🔎 Search Terms
namespaces, modules, export as
🕗 Version & Regression Information
Typescript 4.5.4
- It is replicable on 3.9.7 as well, so it doesn't seems a recent regression.
⏯ Playground Link
Playground link with relevant code
💻 Code
// api.d.ts
export declare class Class1 { }
export as namespace ns;
// test.ts
/// <reference path="./api.d.ts">
const x = new ns.Class1();
// Merging namespaces
namespace ns {
const x = new Class1();
}
🙁 Actual behavior
The code above compiles without errors. However, the emitted JS is not using the ns object, when augmenting the ns namespace:
const x = new ns.Class1(); // <-- this is correct
var ns;
(function (ns) {
const x = new Class1(); // <-- Class1 is undefined, ns.Class1 should be used instead
})(ns || (ns = {}));
🙂 Expected behavior
const x = new ns.Class1();
var ns;
(function (ns) {
const x = new ns.Class1();
})(ns || (ns = {}));
Thanks!