JWT Autorization / Logging in and registering

node_modules/validator/es/lib/isLength.js

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+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+import assertString from './util/assertString';
+/* eslint-disable prefer-rest-params */
+
+export default function isLength(str, options) {
+  assertString(str);
+  var min;
+  var max;
+
+  if (_typeof(options) === 'object') {
+    min = options.min || 0;
+    max = options.max;
+  } else {
+    // backwards compatibility: isLength(str, min [, max])
+    min = arguments[1] || 0;
+    max = arguments[2];
+  }
+
+  var surrogatePairs = str.match(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g) || [];
+  var len = str.length - surrogatePairs.length;
+  return len >= min && (typeof max === 'undefined' || len <= max);
+}