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throw an error when no default export present (#35815)

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This commit is contained in:
Alexander T
2020-01-14 21:38:48 +02:00
committed by Wesley Wigham
parent 91ffa1c752
commit daf786ecd0
44 changed files with 548 additions and 3 deletions
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11
src/compiler/checker.ts
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@@ -2322,13 +2322,18 @@ namespace ts {
else {
symbolFromVariable = getPropertyOfVariable(targetSymbol, name.escapedText);
}
// if symbolFromVariable is export - get its final target
symbolFromVariable = resolveSymbol(symbolFromVariable, dontResolveAlias);
let symbolFromModule = getExportOfModule(targetSymbol, name.escapedText, dontResolveAlias);
// If the export member we're looking for is default, and there is no real default but allowSyntheticDefaultImports is on, return the entire module as the default
if (!symbolFromModule && allowSyntheticDefaultImports && name.escapedText === InternalSymbolName.Default) {
symbolFromModule = resolveExternalModuleSymbol(moduleSymbol, dontResolveAlias) || resolveSymbol(moduleSymbol, dontResolveAlias);
if (symbolFromModule === undefined && name.escapedText === InternalSymbolName.Default) {
const file = find(moduleSymbol.declarations, isSourceFile);
if (canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias)) {
symbolFromModule = resolveExternalModuleSymbol(moduleSymbol, dontResolveAlias) || resolveSymbol(moduleSymbol, dontResolveAlias);
}
}
const symbol = symbolFromModule && symbolFromVariable && symbolFromModule !== symbolFromVariable ?
combineValueAndTypeSymbols(symbolFromVariable, symbolFromModule) :
symbolFromModule || symbolFromVariable;