feat: 초기 프로젝트 설정 및 룰.md 파일 추가

api.hyungi.net/node_modules/validator/es/lib/isIn.js

@@ -0,0 +1,23 @@
+function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
+import assertString from './util/assertString';
+import toString from './util/toString';
+export default function isIn(str, options) {
+  assertString(str);
+  var i;
+  if (Object.prototype.toString.call(options) === '[object Array]') {
+    var array = [];
+    for (i in options) {
+      // https://github.com/gotwarlost/istanbul/blob/master/ignoring-code-for-coverage.md#ignoring-code-for-coverage-purposes
+      // istanbul ignore else
+      if ({}.hasOwnProperty.call(options, i)) {
+        array[i] = toString(options[i]);
+      }
+    }
+    return array.indexOf(str) >= 0;
+  } else if (_typeof(options) === 'object') {
+    return options.hasOwnProperty(str);
+  } else if (options && typeof options.indexOf === 'function') {
+    return options.indexOf(str) >= 0;
+  }
+  return false;
+}