define(['exports'], function (exports) {
  'use strict';

  exports.__esModule = true;
  exports.extend = extend;
  exports.indexOf = indexOf;
  exports.escapeExpression = escapeExpression;
  exports.isEmpty = isEmpty;
  exports.createFrame = createFrame;
  exports.blockParams = blockParams;
  exports.appendContextPath = appendContextPath;
  var escape = {
    '&': '&',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#x27;',
    '`': '&#x60;',
    '=': '&#x3D;'
  };

  var badChars = /[&<>"'`=]/g,
      possible = /[&<>"'`=]/;

  function escapeChar(chr) {
    return escape[chr];
  }

  function extend(obj /* , ...source */) {
    for (var i = 1; i < arguments.length; i++) {
      for (var key in arguments[i]) {
        if (Object.prototype.hasOwnProperty.call(arguments[i], key)) {
          obj[key] = arguments[i][key];
        }
      }
    }

    return obj;
  }

  var toString = Object.prototype.toString;

  // Sourced from lodash
  // https://github.com/bestiejs/lodash/blob/master/LICENSE.txt
  /* eslint-disable func-style */
  exports.toString = toString;
  var isFunction = function isFunction(value) {
    return typeof value === 'function';
  };
  // fallback for older versions of Chrome and Safari
  /* istanbul ignore next */
  if (isFunction(/x/)) {
    exports.isFunction = isFunction = function (value) {
      return typeof value === 'function' && toString.call(value) === '[object Function]';
    };
  }
  exports.isFunction = isFunction;

  /* eslint-enable func-style */

  /* istanbul ignore next */
  var isArray = Array.isArray || function (value) {
    return value && typeof value === 'object' ? toString.call(value) === '[object Array]' : false;
  };

  // Older IE versions do not directly support indexOf so we must implement our own, sadly.
  exports.isArray = isArray;

  function indexOf(array, value) {
    for (var i = 0, len = array.length; i < len; i++) {
      if (array[i] === value) {
        return i;
      }
    }
    return -1;
  }

  function escapeExpression(string) {
    if (typeof string !== 'string') {
      // don't escape SafeStrings, since they're already safe
      if (string && string.toHTML) {
        return string.toHTML();
      } else if (string == null) {
        return '';
      } else if (!string) {
        return string + '';
      }

      // Force a string conversion as this will be done by the append regardless and
      // the regex test will do this transparently behind the scenes, causing issues if
      // an object's to string has escaped characters in it.
      string = '' + string;
    }

    if (!possible.test(string)) {
      return string;
    }
    return string.replace(badChars, escapeChar);
  }

  function isEmpty(value) {
    if (!value && value !== 0) {
      return true;
    } else if (isArray(value) && value.length === 0) {
      return true;
    } else {
      return false;
    }
  }

  function createFrame(object) {
    var frame = extend({}, object);
    frame._parent = object;
    return frame;
  }

  function blockParams(params, ids) {
    params.path = ids;
    return params;
  }

  function appendContextPath(contextPath, id) {
    return (contextPath ? contextPath + '.' : '') + id;
  }
});
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