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Recognize export * as default as a syntactic default export for synthetic default detection (#55985)

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Andrew Branch 2023-10-05 10:33:24 -07:00 committed by GitHub
parent e9f68cb296
commit 21109b71aa
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5 changed files with 89 additions and 1 deletions
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5
src/compiler/checker.ts
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@ -4022,7 +4022,10 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
}
function isSyntacticDefault(node: Node) {
return ((isExportAssignment(node) && !node.isExportEquals) || hasSyntacticModifier(node, ModifierFlags.Default) || isExportSpecifier(node));
return ((isExportAssignment(node) && !node.isExportEquals)
|| hasSyntacticModifier(node, ModifierFlags.Default)
|| isExportSpecifier(node)
|| isNamespaceExport(node));
}
function getUsageModeForExpression(usage: Expression) {

18
tests/baselines/reference/exportAsNamespace5.js Normal file
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@ -0,0 +1,18 @@
//// [tests/cases/conformance/es2020/modules/exportAsNamespace5.ts] ////
//// [three.d.ts]
export type Named = 0;
declare const Named: 0;
//// [two.d.ts]
export * as default from "./three";
//// [one.ts]
import ns from "./two";
type Alias = ns.Named;
ns.Named;
//// [one.js]
import ns from "./two";
ns.Named;

27
tests/baselines/reference/exportAsNamespace5.symbols Normal file
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@ -0,0 +1,27 @@
//// [tests/cases/conformance/es2020/modules/exportAsNamespace5.ts] ////
=== three.d.ts ===
export type Named = 0;
>Named : Symbol(Named, Decl(three.d.ts, 0, 0), Decl(three.d.ts, 1, 13))
declare const Named: 0;
>Named : Symbol(Named, Decl(three.d.ts, 0, 0), Decl(three.d.ts, 1, 13))
=== two.d.ts ===
export * as default from "./three";
>default : Symbol(default, Decl(two.d.ts, 0, 6))
=== one.ts ===
import ns from "./two";
>ns : Symbol(ns, Decl(one.ts, 0, 6))
type Alias = ns.Named;
>Alias : Symbol(Alias, Decl(one.ts, 0, 23))
>ns : Symbol(ns, Decl(one.ts, 0, 6))
>Named : Symbol(ns.Named, Decl(three.d.ts, 0, 0), Decl(three.d.ts, 1, 13))
ns.Named;
>ns.Named : Symbol(ns.Named, Decl(three.d.ts, 0, 0), Decl(three.d.ts, 1, 13))
>ns : Symbol(ns, Decl(one.ts, 0, 6))
>Named : Symbol(ns.Named, Decl(three.d.ts, 0, 0), Decl(three.d.ts, 1, 13))

26
tests/baselines/reference/exportAsNamespace5.types Normal file
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@ -0,0 +1,26 @@
//// [tests/cases/conformance/es2020/modules/exportAsNamespace5.ts] ////
=== three.d.ts ===
export type Named = 0;
>Named : 0
declare const Named: 0;
>Named : 0
=== two.d.ts ===
export * as default from "./three";
>default : typeof import("three")
=== one.ts ===
import ns from "./two";
>ns : typeof ns
type Alias = ns.Named;
>Alias : 0
>ns : any
ns.Named;
>ns.Named : 0
>ns : typeof ns
>Named : 0

14
tests/cases/conformance/es2020/modules/exportAsNamespace5.ts Normal file
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@ -0,0 +1,14 @@
// @module: esnext
// @moduleResolution: bundler
// @filename: three.d.ts
export type Named = 0;
declare const Named: 0;
// @filename: two.d.ts
export * as default from "./three";
// @filename: one.ts
import ns from "./two";
type Alias = ns.Named;
ns.Named;