Merge pull request #6044 from weswigham/redeclared-export-type
Exempt one type declaration from the redeclared export check - Fix #6043
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commit
5ee0957974
5 changed files with 34 additions and 1 deletions
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@ -14295,7 +14295,7 @@ namespace ts {
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}
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const { declarations, flags } = exports[id];
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// ECMA262: 15.2.1.1 It is a Syntax Error if the ExportedNames of ModuleItemList contains any duplicate entries. (TS Exceptions: namespaces, function overloads, enums, and interfaces)
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if (!(flags & (SymbolFlags.Namespace | SymbolFlags.Interface | SymbolFlags.Enum)) && declarations.length > 1) {
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if (!(flags & (SymbolFlags.Namespace | SymbolFlags.Interface | SymbolFlags.Enum)) && (flags & SymbolFlags.TypeAlias ? declarations.length - 1 : declarations.length) > 1) {
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const exportedDeclarations: Declaration[] = filter(declarations, isNotOverload);
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if (exportedDeclarations.length > 1) {
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for (const declaration of exportedDeclarations) {
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8
tests/baselines/reference/typeAliasExport.js
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8
tests/baselines/reference/typeAliasExport.js
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@ -0,0 +1,8 @@
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//// [typeAliasExport.ts]
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declare module "a" {
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export default 0
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export var a;
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export type a = typeof a;
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}
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//// [typeAliasExport.js]
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10
tests/baselines/reference/typeAliasExport.symbols
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10
tests/baselines/reference/typeAliasExport.symbols
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@ -0,0 +1,10 @@
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=== tests/cases/compiler/typeAliasExport.ts ===
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declare module "a" {
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export default 0
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export var a;
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>a : Symbol(a, Decl(typeAliasExport.ts, 2, 12), Decl(typeAliasExport.ts, 2, 15))
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export type a = typeof a;
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>a : Symbol(a, Decl(typeAliasExport.ts, 2, 12), Decl(typeAliasExport.ts, 2, 15))
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>a : Symbol(a, Decl(typeAliasExport.ts, 2, 12), Decl(typeAliasExport.ts, 2, 15))
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}
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10
tests/baselines/reference/typeAliasExport.types
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10
tests/baselines/reference/typeAliasExport.types
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@ -0,0 +1,10 @@
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=== tests/cases/compiler/typeAliasExport.ts ===
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declare module "a" {
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export default 0
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export var a;
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>a : any
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export type a = typeof a;
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>a : any
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>a : any
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}
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5
tests/cases/compiler/typeAliasExport.ts
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5
tests/cases/compiler/typeAliasExport.ts
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@ -0,0 +1,5 @@
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declare module "a" {
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export default 0
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export var a;
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export type a = typeof a;
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}
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