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fix(42133): fix instantiated undefined type from JS initializer (#42662)

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Oleksandr T
2021-02-12 03:07:14 +02:00
committed by GitHub
parent c7bac6f2e6
commit 475036950e
5 changed files with 59 additions and 2 deletions
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4
src/compiler/checker.ts
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@@ -19489,8 +19489,8 @@ namespace ts {
}
function isEmptyArrayLiteralType(type: Type): boolean {
const elementType = isArrayType(type) ? getTypeArguments(type)[0] : undefined;
return elementType === undefinedWideningType || elementType === implicitNeverType;
const elementType = getElementTypeOfArrayType(type);
return strictNullChecks ? elementType === implicitNeverType : elementType === undefinedWideningType;
}
function isTupleLikeType(type: Type): boolean {