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   1  /*!
   2   * Skip function for es5-shim module.
   3   *
   4   * Test for strict mode as a proxy for full ES5 function support (but not syntax)
   5   * Per http://kangax.github.io/compat-table/es5/ this is a reasonable shortcut
   6   * that still allows this to be as short as possible (there are no browsers we
   7   * support that have strict mode, but lack other features).
   8   *
   9   * Do explicitly test for Function#bind because of PhantomJS (which implements
  10   * strict mode, but lacks Function#bind).
  11   *
  12   * IE9 supports all features except strict mode, so loading es5-shim should be close to
  13   * a no-op but does increase page payload).
  14   */
  15  return ( function () {
  16      'use strict';
  17      return !this && !!Function.prototype.bind;
  18  }() );