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Use the non-nullable type of the contextual type for object completions.

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Daniel Rosenwasser
2016-08-17 20:32:52 -07:00
parent 111b7c55f8
commit c1e70c97c0
1 changed files with 5 additions and 1 deletions
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6
src/services/services.ts
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@@ -3789,7 +3789,11 @@ namespace ts {
// other than those within the declared type.
isNewIdentifierLocation = true;
// If the object literal is being assigned to something of type 'null | { hello: string }',
// it clearly isn't trying to satisfy the 'null' type. So we grab the non-nullable type if possible.
typeForObject = typeChecker.getContextualType(<ObjectLiteralExpression>objectLikeContainer);
typeForObject = typeForObject && typeForObject.getNonNullableType();
existingMembers = (<ObjectLiteralExpression>objectLikeContainer).properties;
}
else if (objectLikeContainer.kind === SyntaxKind.ObjectBindingPattern) {
@@ -3801,7 +3805,7 @@ 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.
// Also proceed if rootDeclaration is parameter and if its containing function expression\arrow function is contextually typed -
// Also proceed if rootDeclaration is a 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
let canGetType = !!(rootDeclaration.initializer || rootDeclaration.type);
if (!canGetType && rootDeclaration.kind === SyntaxKind.Parameter) {