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Fix inference when source and target both have rest parameters

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This commit is contained in:
Anders Hejlsberg
2018-09-12 12:33:37 -07:00
parent 0226b66180
commit 52293edce5
1 changed files with 2 additions and 4 deletions
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6
src/compiler/checker.ts
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@@ -13128,10 +13128,8 @@ namespace ts {
const targetCount = getParameterCount(target);
const sourceRestType = getEffectiveRestType(source);
const targetRestType = getEffectiveRestType(target);
const paramCount = targetRestType ? Math.min(targetCount - 1, sourceCount) :
sourceRestType ? targetCount :
Math.min(sourceCount, targetCount);
const targetNonRestCount = targetRestType ? targetCount - 1 : targetCount;
const paramCount = sourceRestType ? targetNonRestCount : Math.min(sourceCount, targetNonRestCount);
const sourceThisType = getThisTypeOfSignature(source);
if (sourceThisType) {
const targetThisType = getThisTypeOfSignature(target);