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isDOMError(wat: any): boolean {\n  return Object.prototype.toString.call(wat) === '[object DOMError]';\n}\n\n/**\n * Checks whether given value's type is DOMException\n * {@link isDOMException}.\n *\n * @param wat A value to be checked.\n * @returns A boolean representing the result.\n */\nexport function isDOMException(wat: any): boolean {\n  return Object.prototype.toString.call(wat) === '[object DOMException]';\n}\n\n/**\n * Checks whether given value's type is a string\n * {@link isString}.\n *\n * @param wat A value to be checked.\n * @returns A boolean representing the result.\n */\nexport function isString(wat: any): boolean {\n  return Object.prototype.toString.call(wat) === '[object String]';\n}\n\n/**\n * Checks whether given value's is a primitive (undefined, null, number, boolean, string)\n * {@link isPrimitive}.\n *\n * @param wat A value to be checked.\n * @returns A boolean representing the result.\n */\nexport function isPrimitive(wat: any): boolean {\n  return wat === null || (typeof wat !== 'object' && typeof wat !== 'function');\n}\n\n/**\n * Checks whether given value's type is an object literal\n * {@link isPlainObject}.\n *\n * @param wat A value to be checked.\n * @returns A boolean representing the result.\n */\nexport function isPlainObject(wat: any): boolean {\n  return Object.prototype.toString.call(wat) === '[object Object]';\n}\n\n/**\n * Checks whether given value's type is an Event instance\n * {@link isEvent}.\n *\n * @param wat A value to be checked.\n * @returns A boolean representing the result.\n */\nexport function isEvent(wat: any): boolean {\n  // tslint:disable-next-line:strict-type-predicates\n  return typeof Event !== 'undefined' && isInstanceOf(wat, Event);\n}\n\n/**\n * Checks whether given value's type is an Element instance\n * {@link isElement}.\n *\n * @param wat A value to be checked.\n * @returns A boolean representing the result.\n */\nexport function isElement(wat: any): boolean {\n  // tslint:disable-next-line:strict-type-predicates\n  return typeof Element !== 'undefined' && isInstanceOf(wat, Element);\n}\n\n/**\n * Checks whether given value's type is an regexp\n * {@link isRegExp}.\n *\n * @param wat A value to be checked.\n * @returns A boolean representing the result.\n */\nexport function isRegExp(wat: any): boolean {\n  return Object.prototype.toString.call(wat) === '[object RegExp]';\n}\n\n/**\n * Checks whether given value has a then function.\n * @param wat A value to be checked.\n */\nexport function isThenable(wat: any): boolean {\n  // tslint:disable:no-unsafe-any\n  return Boolean(wat && wat.then && typeof wat.then === 'function');\n  // tslint:enable:no-unsafe-any\n}\n\n/**\n * Checks whether given value's type is a SyntheticEvent\n * {@link isSyntheticEvent}.\n *\n * @param wat A value to be checked.\n * @returns A boolean representing the result.\n */\nexport function isSyntheticEvent(wat: any): boolean {\n  // tslint:disable-next-line:no-unsafe-any\n  return isPlainObject(wat) && 'nativeEvent' in wat && 'preventDefault' in wat && 'stopPropagation' in wat;\n}\n/**\n * Checks whether given value's type is an instance of provided constructor.\n * {@link isInstanceOf}.\n *\n * @param wat A value to be checked.\n * @param base A constructor to be used in a check.\n * @returns A boolean representing the result.\n */\nexport function isInstanceOf(wat: any, base: any): boolean {\n  try {\n    // tslint:disable-next-line:no-unsafe-any\n    return wat instanceof base;\n  } catch (_e) {\n    return false;\n  }\n}\n"]}