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{} & null and {} & undefined should be never in non-strictNullChecks mode

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Anders Hejlsberg
2022-08-30 14:26:34 -07:00
parent f071d303c1
commit 3652682f52
1 changed files with 1 additions and 1 deletions
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src/compiler/checker.ts
+1 -1
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@@ -15166,7 +15166,7 @@ namespace ts {
return includes & TypeFlags.IncludesWildcard ? wildcardType : anyType;
}
if (!strictNullChecks && includes & TypeFlags.Nullable) {
return includes & TypeFlags.Undefined ? undefinedType : nullType;
return includes & TypeFlags.IncludesEmptyObject ? neverType : includes & TypeFlags.Undefined ? undefinedType : nullType;
}
if (includes & TypeFlags.String && includes & (TypeFlags.StringLiteral | TypeFlags.TemplateLiteral | TypeFlags.StringMapping) ||
includes & TypeFlags.Number && includes & TypeFlags.NumberLiteral ||