package.amd.underscore.js Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of underscore Show documentation

JavaScript's functional programming helper library.

The newest version!

define(['./_setup'], function (_setup) {

  // 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.
  function _(obj) {
    if (obj instanceof _) return obj;
    if (!(this instanceof _)) return new _(obj);
    this._wrapped = obj;
  }

  _.VERSION = _setup.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);
  };

  return _;

});