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Don't include private/protected properties in keyof T

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This commit is contained in:
Anders Hejlsberg
2016-11-08 13:38:52 -08:00
parent cf2953bc44
commit aca7e2fa3b
1 changed files with 4 additions and 2 deletions
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6
src/compiler/checker.ts
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@@ -5816,7 +5816,9 @@ namespace ts {
}
function getLiteralTypeFromPropertyName(prop: Symbol) {
return startsWith(prop.name, "__@") ? neverType : getLiteralTypeForText(TypeFlags.StringLiteral, unescapeIdentifier(prop.name));
return getDeclarationModifierFlagsFromSymbol(prop) & ModifierFlags.NonPublicAccessibilityModifier || startsWith(prop.name, "__@") ?
neverType :
getLiteralTypeForText(TypeFlags.StringLiteral, unescapeIdentifier(prop.name));
}
function getLiteralTypeFromPropertyNames(type: Type) {
@@ -7044,7 +7046,7 @@ namespace ts {
return result;
}
}
else if (isGenericMappedType(target)) {
if (isGenericMappedType(target)) {
// A type [P in S]: X is related to a type [P in T]: X if T is related to S.
if (isGenericMappedType(source) &&
isRelatedTo(getConstraintTypeFromMappedType(<MappedType>target), getConstraintTypeFromMappedType(<MappedType>source), /*reportErrors*/ false) &&