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mangashelf-server/node_modules/@honeo/check/_is/is-valid-date.mjs

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+/*
+	引数の日時が存在するものかをBooleanで返す
+
+		引数
+			1, 2, 3: number
+		返り値
+			boolean
+
+		参考
+			[Vanilla JavaScriptで簡単に日付が有効かどうかチェックする方法 | Rriver](https://parashuto.com/rriver/development/validate-date-using-vanilla-js)
+*/
+
+// Mod
+import isNumber from './is-number.mjs';
+
+function isValidDate(year, month, day){
+
+	if( !isNumber(year, month, day) ){
+		throw new TypeError(`Invalid arguments`);
+	}
+
+	const date = new Date(year, month-1, day);
+	const isSameYear = date.getFullYear()===year;
+	const isSameMonth = date.getMonth()===(month-1);
+	const isSameDay = date.getDate()===day;
+	const result = isSameYear && isSameMonth && isSameDay;
+	return result;
+}
+
+export default isValidDate;