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node_modules/is-extendable/index.js 331 Bytes
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  /*!
   * is-extendable <https://github.com/jonschlinkert/is-extendable>
   *
   * Copyright (c) 2015, Jon Schlinkert.
   * Licensed under the MIT License.
   */
  
  'use strict';
  
  module.exports = function isExtendable(val) {
    return typeof val !== 'undefined' && val !== null
      && (typeof val === 'object' || typeof val === 'function');
  };