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Allow union types containing primtives as first argument in instanceof

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This commit is contained in:
Anders Hejlsberg 2015-01-25 16:14:20 -08:00
parent 7f63180b64
commit e5e06d8ca5
2 changed files with 2 additions and 1 deletions
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2
src/compiler/checker.ts
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@ -6776,7 +6776,7 @@ module ts {
// and the right operand to be of type Any or a subtype of the 'Function' interface type.
// The result is always of the Boolean primitive type.
// NOTE: do not raise error if leftType is unknown as related error was already reported
if (!isTypeOfKind(leftType, TypeFlags.Any | TypeFlags.ObjectType | TypeFlags.TypeParameter)) {
if (isTypeOfKind(leftType, TypeFlags.Primitive)) {
error(node.left, Diagnostics.The_left_hand_side_of_an_instanceof_expression_must_be_of_type_any_an_object_type_or_a_type_parameter);
}
// NOTE: do not raise error if right is unknown as related error was already reported

1
src/compiler/types.ts
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@ -1286,6 +1286,7 @@ module ts {
Unwidened = 0x00020000, // Unwidened type (is or contains Undefined or Null type)
Intrinsic = Any | String | Number | Boolean | Void | Undefined | Null,
Primitive = String | Number | Boolean | Void | Undefined | Null | StringLiteral | Enum,
StringLike = String | StringLiteral,
NumberLike = Number | Enum,
ObjectType = Class | Interface | Reference | Tuple | Anonymous,