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fix typefacts of intersection (#47583)

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This commit is contained in:
Gabriela Araujo Britto
2022-02-01 17:10:43 -03:00
committed by GitHub
parent 21bbb576ad
commit 46e7ab4dbf
9 changed files with 157 additions and 2 deletions
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7
src/compiler/checker.ts
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@@ -135,7 +135,7 @@ namespace ts {
AllTypeofNE = TypeofNEString | TypeofNENumber | TypeofNEBigInt | TypeofNEBoolean | TypeofNESymbol | TypeofNEObject | TypeofNEFunction | NEUndefined,
EmptyObjectFacts = All,
// Masks
OrFactsMask = TypeofEQFunction | TypeofEQObject | TypeofNEObject,
OrFactsMask = TypeofEQFunction | TypeofNEObject,
AndFactsMask = All & ~OrFactsMask,
}
@@ -22961,7 +22961,10 @@ namespace ts {
(type === falseType || type === regularFalseType) ? TypeFacts.FalseStrictFacts : TypeFacts.TrueStrictFacts :
(type === falseType || type === regularFalseType) ? TypeFacts.FalseFacts : TypeFacts.TrueFacts;
}
if (flags & TypeFlags.Object && !ignoreObjects) {
if (flags & TypeFlags.Object) {
if (ignoreObjects) {
return TypeFacts.AndFactsMask; // This is the identity element for computing type facts of intersection.
}
return getObjectFlags(type) & ObjectFlags.Anonymous && isEmptyObjectType(type as ObjectType) ?
strictNullChecks ? TypeFacts.EmptyObjectStrictFacts : TypeFacts.EmptyObjectFacts :
isFunctionObjectType(type as ObjectType) ?