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Out of bounds tuple elements have type 'undefined'

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This commit is contained in:
Anders Hejlsberg
2019-06-21 18:00:26 -10:00
parent 2c458c0d1c
commit 7cdc65b2a5
1 changed files with 1 additions and 1 deletions
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2
src/compiler/checker.ts
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@@ -14440,7 +14440,7 @@ namespace ts {
if (propType) {
return propType;
}
if (everyType(type, isTupleType) && !everyType(type, t => !(<TupleTypeReference>t).target.hasRestElement)) {
if (everyType(type, isTupleType)) {
return mapType(type, t => getRestTypeOfTupleType(<TupleTypeReference>t) || undefinedType);
}
return undefined;