Мелкая поправка
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@@ -464,7 +464,7 @@ class BookManager {
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addEventListener(listener) {
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addEventListener(listener) {
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if (this.eventListeners.indexOf(listener) < 0)
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if (this.eventListeners.indexOf(listener) < 0)
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this.eventListeners.push(listener);
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this.eventListeners.push(listener);
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}
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}
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removeEventListener(listener) {
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removeEventListener(listener) {
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