initial commit: scaffolding

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diff --git a/node_modules/date-fns/esm/isValid/index.js b/node_modules/date-fns/esm/isValid/index.js
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+import isDate from "../isDate/index.js";
+import toDate from "../toDate/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+/**
+ * @name isValid
+ * @category Common Helpers
+ * @summary Is the given date valid?
+ *
+ * @description
+ * Returns false if argument is Invalid Date and true otherwise.
+ * Argument is converted to Date using `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
+ * Invalid Date is a Date, whose time value is NaN.
+ *
+ * Time value of Date: http://es5.github.io/#x15.9.1.1
+ *
+ * @param {*} date - the date to check
+ * @returns {Boolean} the date is valid
+ * @throws {TypeError} 1 argument required
+ *
+ * @example
+ * // For the valid date:
+ * const result = isValid(new Date(2014, 1, 31))
+ * //=> true
+ *
+ * @example
+ * // For the value, convertable into a date:
+ * const result = isValid(1393804800000)
+ * //=> true
+ *
+ * @example
+ * // For the invalid date:
+ * const result = isValid(new Date(''))
+ * //=> false
+ */
+export default function isValid(dirtyDate) {
+  requiredArgs(1, arguments);
+  if (!isDate(dirtyDate) && typeof dirtyDate !== 'number') {
+    return false;
+  }
+  var date = toDate(dirtyDate);
+  return !isNaN(Number(date));
+}
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