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show completion in destructured parameter if containing function was contextually typed

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This commit is contained in:
Vladimir Matveev
2016-03-17 11:37:52 -07:00
parent 51e8f7dd7a
commit 6cfa64daa3
2 changed files with 20 additions and 1 deletions
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6
src/services/services.ts
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@@ -3504,7 +3504,11 @@ namespace ts {
// We don't want to complete using the type acquired by the shape
// of the binding pattern; we are only interested in types acquired
// through type declaration or inference.
if (rootDeclaration.initializer || rootDeclaration.type) {
// Also proceed if rootDeclaration is parameter and if its containing function expression\arrow function is contextually typed -
// type of parameter will flow in from the contextual type of the function
if (rootDeclaration.initializer ||
rootDeclaration.type ||
(rootDeclaration.kind === SyntaxKind.Parameter && isExpression(rootDeclaration.parent) && typeChecker.getContextualType(<Expression>rootDeclaration.parent))) {
typeForObject = typeChecker.getTypeAtLocation(objectLikeContainer);
existingMembers = (<BindingPattern>objectLikeContainer).elements;
}