import { VERSION } from './_setup.js';import { VERSION } from './_setup.js';If Underscore is called as a function, it returns a wrapped object that can
be used OO-style. This wrapper holds altered versions of all functions added
through _.mixin. Wrapped objects may be chained.
export default function _(obj) {
if (obj instanceof _) return obj;
if (!(this instanceof _)) return new _(obj);
this._wrapped = obj;
}
_.VERSION = VERSION;Extracts the result from a wrapped and chained object.
_.prototype.value = function() {
return this._wrapped;
};Provide unwrapping proxies for some methods used in engine operations such as arithmetic and JSON stringification.
_.prototype.valueOf = _.prototype.toJSON = _.prototype.value;
_.prototype.toString = function() {
return String(this._wrapped);
};