improve completions for union type in type arguments
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2 changed files with 14 additions and 0 deletions
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@ -402,6 +402,8 @@ namespace ts.Completions {
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return stringLiteralCompletionsFromProperties(typeChecker.getTypeFromTypeNode((node.parent.parent as IndexedAccessTypeNode).objectType));
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case SyntaxKind.ImportType:
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return { kind: StringLiteralCompletionKind.Paths, paths: PathCompletions.getStringLiteralCompletionsFromModuleNames(sourceFile, node, compilerOptions, host, typeChecker) };
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case SyntaxKind.UnionType:
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return isTypeReferenceNode(node.parent.parent.parent) ? { kind: StringLiteralCompletionKind.Types, types: getStringLiteralTypes(typeChecker.getTypeArgumentConstraint(node.parent.parent as UnionTypeNode)), isNewIdentifier: false } : undefined;
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default:
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return undefined;
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}
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12
tests/cases/fourslash/completionListForStringUnion.ts
Normal file
12
tests/cases/fourslash/completionListForStringUnion.ts
Normal file
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@ -0,0 +1,12 @@
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/// <reference path='fourslash.ts' />
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//// type A = 'fooooo' | 'barrrrr';
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//// type B<T extends A> = {};
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//// type C = B<'fooooo' | '/**/'>
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goTo.marker();
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verify.completionListContains("fooooo");
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verify.completionListContains("barrrrr");
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edit.insert("b");
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verify.completionListContains("barrrrr");
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