Adds transformers for ignored catch parameter
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b917eb0225
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2 changed files with 10 additions and 1 deletions
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@ -3173,7 +3173,7 @@ namespace ts {
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function visitCatchClause(node: CatchClause): CatchClause {
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const ancestorFacts = enterSubtree(HierarchyFacts.BlockScopeExcludes, HierarchyFacts.BlockScopeIncludes);
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let updated: CatchClause;
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if (isBindingPattern(node.variableDeclaration.name)) {
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if (node.variableDeclaration && isBindingPattern(node.variableDeclaration.name)) {
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const temp = createTempVariable(/*recordTempVariable*/ undefined);
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const newVariableDeclaration = createVariableDeclaration(temp);
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setTextRange(newVariableDeclaration, node.variableDeclaration);
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@ -101,6 +101,8 @@ namespace ts {
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return visitExpressionStatement(node as ExpressionStatement);
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case SyntaxKind.ParenthesizedExpression:
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return visitParenthesizedExpression(node as ParenthesizedExpression, noDestructuringValue);
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case SyntaxKind.CatchClause:
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return visitCatchClause(node as CatchClause);
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default:
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return visitEachChild(node, visitor, context);
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}
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@ -212,6 +214,13 @@ namespace ts {
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return visitEachChild(node, noDestructuringValue ? visitorNoDestructuringValue : visitor, context);
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}
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function visitCatchClause(node: CatchClause): CatchClause {
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if (!node.variableDeclaration) {
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return updateCatchClause(node, createVariableDeclaration("_ignoredCatchParameter"), node.block);
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}
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return visitEachChild(node, visitor, context);
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}
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/**
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* Visits a BinaryExpression that contains a destructuring assignment.
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*
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