Switch to Set of Symbols in extractSymbol.
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@ -1597,7 +1597,7 @@ namespace ts.refactor.extractSymbol {
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const functionErrorsPerScope: Diagnostic[][] = [];
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const constantErrorsPerScope: Diagnostic[][] = [];
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const visibleDeclarationsInExtractedRange: NamedDeclaration[] = [];
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const exposedVariableSymbolSet = new Map<string, true>(); // Key is symbol ID
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const exposedVariableSymbolSet = new Set<Symbol>(); // Key is symbol ID
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const exposedVariableDeclarations: VariableDeclaration[] = [];
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let firstExposedNonVariableDeclaration: NamedDeclaration | undefined;
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@ -1903,10 +1903,10 @@ namespace ts.refactor.extractSymbol {
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const decl = find(visibleDeclarationsInExtractedRange, d => d.symbol === sym);
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if (decl) {
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if (isVariableDeclaration(decl)) {
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const idString = decl.symbol.id!.toString();
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if (!exposedVariableSymbolSet.has(idString)) {
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const declSymbol = decl.symbol;
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if (!exposedVariableSymbolSet.has(declSymbol)) {
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exposedVariableDeclarations.push(decl);
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exposedVariableSymbolSet.set(idString, true);
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exposedVariableSymbolSet.add(declSymbol);
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}
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}
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else {
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