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This commit is contained in:
Andy Hanson 2017-12-13 12:28:13 -08:00
parent 9533c0093d
commit ceb0502914
1 changed files with 4 additions and 2 deletions
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6
src/compiler/checker.ts
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@ -24594,7 +24594,7 @@ namespace ts {
function getRootSymbols(symbol: Symbol): Symbol[] {
const roots = getImmediateRootSymbols(symbol);
return roots === undefined ? [symbol] : flatMap(roots, getRootSymbols);
return roots ? flatMap(roots, getRootSymbols) : [symbol];
}
function getImmediateRootSymbols(symbol: Symbol): ReadonlyArray<Symbol> | undefined {
if (getCheckFlags(symbol) & CheckFlags.Synthetic) {
@ -24602,7 +24602,9 @@ namespace ts {
}
else if (symbol.flags & SymbolFlags.Transient) {
const { leftSpread, rightSpread, syntheticOrigin } = symbol as TransientSymbol;
return leftSpread ? [leftSpread, rightSpread] : syntheticOrigin ? [syntheticOrigin] : singleElementArray(tryGetAliasTarget(symbol));
return leftSpread ? [leftSpread, rightSpread]
: syntheticOrigin ? [syntheticOrigin]
: singleElementArray(tryGetAliasTarget(symbol));
}
return undefined;
}