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fix(css): prevent duplicate system classes (#10355)
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@ -12,7 +12,10 @@ export namespace CSSUtils {
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}
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export function pushToSystemCssClasses(value: string): number {
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cssClasses.push(value);
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const index = cssClasses.indexOf(value);
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if (index == -1) {
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cssClasses.push(value);
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}
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return cssClasses.length;
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}
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