wrap.js

var createWrapper = require('../internal/createWrapper'),
    identity = require('../utility/identity');

/** Used to compose bitmasks for wrapper metadata. */
var PARTIAL_FLAG = 32;

/**
 * Creates a function that provides `value` to the wrapper function as its
 * first argument. Any additional arguments provided to the function are
 * appended to those provided to the wrapper function. The wrapper is invoked
 * with the `this` binding of the created function.
 *
 * @static
 * @memberOf _
 * @category Function
 * @param {*} value The value to wrap.
 * @param {Function} wrapper The wrapper function.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var p = _.wrap(_.escape, function(func, text) {
 *   return '<p>' + func(text) + '</p>';
 * });
 *
 * p('fred, barney, & pebbles');
 * // => '<p>fred, barney, &amp; pebbles</p>'
 */
function wrap(value, wrapper) {
  wrapper = wrapper == null ? identity : wrapper;
  return createWrapper(wrapper, PARTIAL_FLAG, null, [value], []);
}

module.exports = wrap;