Current Dev State

static/js/ketcher2/node_modules/validator/lib/isDate.js

@@ -0,0 +1,100 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = isDate;
+
+var _assertString = require('./util/assertString');
+
+var _assertString2 = _interopRequireDefault(_assertString);
+
+var _isISO = require('./isISO8601');
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function getTimezoneOffset(str) {
+  var iso8601Parts = str.match(_isISO.iso8601);
+  var timezone = void 0,
+      sign = void 0,
+      hours = void 0,
+      minutes = void 0;
+  if (!iso8601Parts) {
+    str = str.toLowerCase();
+    timezone = str.match(/(?:\s|gmt\s*)(-|\+)(\d{1,4})(\s|$)/);
+    if (!timezone) {
+      return str.indexOf('gmt') !== -1 ? 0 : null;
+    }
+    sign = timezone[1];
+    var offset = timezone[2];
+    if (offset.length === 3) {
+      offset = '0' + offset;
+    }
+    if (offset.length <= 2) {
+      hours = 0;
+      minutes = parseInt(offset, 10);
+    } else {
+      hours = parseInt(offset.slice(0, 2), 10);
+      minutes = parseInt(offset.slice(2, 4), 10);
+    }
+  } else {
+    timezone = iso8601Parts[21];
+    if (!timezone) {
+      // if no hour/minute was provided, the date is GMT
+      return !iso8601Parts[12] ? 0 : null;
+    }
+    if (timezone === 'z' || timezone === 'Z') {
+      return 0;
+    }
+    sign = iso8601Parts[22];
+    if (timezone.indexOf(':') !== -1) {
+      hours = parseInt(iso8601Parts[23], 10);
+      minutes = parseInt(iso8601Parts[24], 10);
+    } else {
+      hours = 0;
+      minutes = parseInt(iso8601Parts[23], 10);
+    }
+  }
+  return (hours * 60 + minutes) * (sign === '-' ? 1 : -1);
+}
+
+function isDate(str) {
+  (0, _assertString2.default)(str);
+  var normalizedDate = new Date(Date.parse(str));
+  if (isNaN(normalizedDate)) {
+    return false;
+  }
+
+  // normalizedDate is in the user's timezone. Apply the input
+  // timezone offset to the date so that the year and day match
+  // the input
+  var timezoneOffset = getTimezoneOffset(str);
+  if (timezoneOffset !== null) {
+    var timezoneDifference = normalizedDate.getTimezoneOffset() - timezoneOffset;
+    normalizedDate = new Date(normalizedDate.getTime() + 60000 * timezoneDifference);
+  }
+
+  var day = String(normalizedDate.getDate());
+  var dayOrYear = void 0,
+      dayOrYearMatches = void 0,
+      year = void 0;
+  // check for valid double digits that could be late days
+  // check for all matches since a string like '12/23' is a valid date
+  // ignore everything with nearby colons
+  dayOrYearMatches = str.match(/(^|[^:\d])[23]\d([^T:\d]|$)/g);
+  if (!dayOrYearMatches) {
+    return true;
+  }
+  dayOrYear = dayOrYearMatches.map(function (digitString) {
+    return digitString.match(/\d+/g)[0];
+  }).join('/');
+
+  year = String(normalizedDate.getFullYear()).slice(-2);
+  if (dayOrYear === day || dayOrYear === year) {
+    return true;
+  } else if (dayOrYear === '' + day / year || dayOrYear === '' + year / day) {
+    return true;
+  }
+  return false;
+}
+module.exports = exports['default'];