| 
						 | 
						- 'use strict';
 - 
 - var $TypeError = require('es-errors/type');
 - var inspect = require('object-inspect');
 - var getSideChannelList = require('side-channel-list');
 - var getSideChannelMap = require('side-channel-map');
 - var getSideChannelWeakMap = require('side-channel-weakmap');
 - 
 - var makeChannel = getSideChannelWeakMap || getSideChannelMap || getSideChannelList;
 - 
 - /** @type {import('.')} */
 - module.exports = function getSideChannel() {
 - 	/** @typedef {ReturnType<typeof getSideChannel>} Channel */
 - 
 - 	/** @type {Channel | undefined} */ var $channelData;
 - 
 - 	/** @type {Channel} */
 - 	var channel = {
 - 		assert: function (key) {
 - 			if (!channel.has(key)) {
 - 				throw new $TypeError('Side channel does not contain ' + inspect(key));
 - 			}
 - 		},
 - 		'delete': function (key) {
 - 			return !!$channelData && $channelData['delete'](key);
 - 		},
 - 		get: function (key) {
 - 			return $channelData && $channelData.get(key);
 - 		},
 - 		has: function (key) {
 - 			return !!$channelData && $channelData.has(key);
 - 		},
 - 		set: function (key, value) {
 - 			if (!$channelData) {
 - 				$channelData = makeChannel();
 - 			}
 - 
 - 			$channelData.set(key, value);
 - 		}
 - 	};
 - 	// @ts-expect-error TODO: figure out why this is erroring
 - 	return channel;
 - };
 
 
  |