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Fix for-in emit under systemjs (#19223)

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This commit is contained in:
Wesley Wigham
2017-10-16 12:57:23 -07:00
committed by GitHub
parent bac30fc1a2
commit 40222d1a77
5 changed files with 64 additions and 1 deletions
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5
src/compiler/transformers/module/system.ts
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@@ -826,7 +826,7 @@ namespace ts {
/*needsValue*/ false,
createAssignment
)
: createAssignment(node.name, visitNode(node.initializer, destructuringAndImportCallVisitor, isExpression));
: node.initializer ? createAssignment(node.name, visitNode(node.initializer, destructuringAndImportCallVisitor, isExpression)) : node.name;
}
/**
@@ -1296,6 +1296,9 @@ namespace ts {
let expressions: Expression[];
for (const variable of node.declarations) {
expressions = append(expressions, transformInitializedVariable(variable, /*isExportedDeclaration*/ false));
if (!variable.initializer) {
hoistBindingElement(variable);
}
}
return expressions ? inlineExpressions(expressions) : createOmittedExpression();