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Cache & widen assigned js prototype type (#32381)

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This commit is contained in:
Wesley Wigham
2019-07-12 12:49:34 -07:00
committed by GitHub
parent 89badcc9d5
commit 37f2e5972f
6 changed files with 237 additions and 1 deletions
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2
src/compiler/checker.ts
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@@ -22750,7 +22750,7 @@ namespace ts {
isVariableDeclaration(decl.parent) && getSymbolOfNode(decl.parent));
const prototype = assignmentSymbol && assignmentSymbol.exports && assignmentSymbol.exports.get("prototype" as __String);
const init = prototype && prototype.valueDeclaration && getAssignedJSPrototype(prototype.valueDeclaration);
return init ? checkExpression(init) : undefined;
return init ? getWidenedType(checkExpressionCached(init)) : undefined;
}
function getAssignedJSPrototype(node: Node) {