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Resolve contextual computed properties with non-bindable names (#51915)

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This commit is contained in:
Mateusz Burzyński
2023-03-01 19:12:18 +01:00
committed by GitHub
parent 73a98aee00
commit 58ee54c2aa
4 changed files with 243 additions and 0 deletions
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10
src/compiler/checker.ts
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@@ -28997,6 +28997,16 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
const symbol = getSymbolOfDeclaration(element);
return getTypeOfPropertyOfContextualType(type, symbol.escapedName, getSymbolLinks(symbol).nameType);
}
if (hasDynamicName(element)) {
const name = getNameOfDeclaration(element);
if (name && isComputedPropertyName(name)) {
const exprType = checkExpression(name.expression);
const propType = isTypeUsableAsPropertyName(exprType) && getTypeOfPropertyOfContextualType(type, getPropertyNameFromType(exprType));
if (propType) {
return propType;
}
}
}
if (element.name) {
const nameType = getLiteralTypeFromPropertyName(element.name);
// We avoid calling getApplicableIndexInfo here because it performs potentially expensive intersection reduction.