initial commit

fluxer_app/src/utils/FileUtils.ts

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+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+export const formatFileSize = (bytes: number): string => {
+	if (bytes === 0) return '0 B';
+	const k = 1000;
+	const sizes = ['B', 'KB', 'MB', 'GB'];
+	const i = Math.floor(Math.log(bytes) / Math.log(k));
+	return `${Math.round((bytes / k ** i) * 10) / 10} ${sizes[i]}`;
+};