diff options
Diffstat (limited to 'together/node_modules/side-channel/index.js')
-rw-r--r-- | together/node_modules/side-channel/index.js | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/together/node_modules/side-channel/index.js b/together/node_modules/side-channel/index.js deleted file mode 100644 index f1c4826..0000000 --- a/together/node_modules/side-channel/index.js +++ /dev/null @@ -1,124 +0,0 @@ -'use strict'; - -var GetIntrinsic = require('get-intrinsic'); -var callBound = require('call-bind/callBound'); -var inspect = require('object-inspect'); - -var $TypeError = GetIntrinsic('%TypeError%'); -var $WeakMap = GetIntrinsic('%WeakMap%', true); -var $Map = GetIntrinsic('%Map%', true); - -var $weakMapGet = callBound('WeakMap.prototype.get', true); -var $weakMapSet = callBound('WeakMap.prototype.set', true); -var $weakMapHas = callBound('WeakMap.prototype.has', true); -var $mapGet = callBound('Map.prototype.get', true); -var $mapSet = callBound('Map.prototype.set', true); -var $mapHas = callBound('Map.prototype.has', true); - -/* - * This function traverses the list returning the node corresponding to the - * given key. - * - * That node is also moved to the head of the list, so that if it's accessed - * again we don't need to traverse the whole list. By doing so, all the recently - * used nodes can be accessed relatively quickly. - */ -var listGetNode = function (list, key) { // eslint-disable-line consistent-return - for (var prev = list, curr; (curr = prev.next) !== null; prev = curr) { - if (curr.key === key) { - prev.next = curr.next; - curr.next = list.next; - list.next = curr; // eslint-disable-line no-param-reassign - return curr; - } - } -}; - -var listGet = function (objects, key) { - var node = listGetNode(objects, key); - return node && node.value; -}; -var listSet = function (objects, key, value) { - var node = listGetNode(objects, key); - if (node) { - node.value = value; - } else { - // Prepend the new node to the beginning of the list - objects.next = { // eslint-disable-line no-param-reassign - key: key, - next: objects.next, - value: value - }; - } -}; -var listHas = function (objects, key) { - return !!listGetNode(objects, key); -}; - -module.exports = function getSideChannel() { - var $wm; - var $m; - var $o; - var channel = { - assert: function (key) { - if (!channel.has(key)) { - throw new $TypeError('Side channel does not contain ' + inspect(key)); - } - }, - get: function (key) { // eslint-disable-line consistent-return - if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) { - if ($wm) { - return $weakMapGet($wm, key); - } - } else if ($Map) { - if ($m) { - return $mapGet($m, key); - } - } else { - if ($o) { // eslint-disable-line no-lonely-if - return listGet($o, key); - } - } - }, - has: function (key) { - if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) { - if ($wm) { - return $weakMapHas($wm, key); - } - } else if ($Map) { - if ($m) { - return $mapHas($m, key); - } - } else { - if ($o) { // eslint-disable-line no-lonely-if - return listHas($o, key); - } - } - return false; - }, - set: function (key, value) { - if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) { - if (!$wm) { - $wm = new $WeakMap(); - } - $weakMapSet($wm, key, value); - } else if ($Map) { - if (!$m) { - $m = new $Map(); - } - $mapSet($m, key, value); - } else { - if (!$o) { - /* - * Initialize the linked list as an empty node, so that we don't have - * to special-case handling of the first node: we can always refer to - * it as (previous node).next, instead of something like (list).head - */ - $o = { key: {}, next: null }; - } - listSet($o, key, value); - } - } - }; - return channel; -}; |