'use strict';
var GetIntrinsic = require('get-intrinsic');
var callBound = require('call-bound');
var inspect = require('object-inspect');
var getSideChannelMap = require('side-channel-map');
var $TypeError = require('es-errors/type');
var $WeakMap = GetIntrinsic('%WeakMap%', true);
/** @type {<K extends object, V>(thisArg: WeakMap<K, V>, key: K) => V} */
var $weakMapGet = callBound('WeakMap.prototype.get', true);
/** @type {<K extends object, V>(thisArg: WeakMap<K, V>, key: K, value: V) => void} */
var $weakMapSet = callBound('WeakMap.prototype.set', true);
/** @type {<K extends object, V>(thisArg: WeakMap<K, V>, key: K) => boolean} */
var $weakMapHas = callBound('WeakMap.prototype.has', true);
/** @type {<K extends object, V>(thisArg: WeakMap<K, V>, key: K) => boolean} */
var $weakMapDelete = callBound('WeakMap.prototype.delete', true);
/** @type {import('.')} */
module.exports = $WeakMap
? /** @type {Exclude<import('.'), false>} */ function getSideChannelWeakMap() {
/** @typedef {ReturnType<typeof getSideChannelWeakMap>} Channel */
/** @typedef {Parameters<Channel['get']>[0]} K */
/** @typedef {Parameters<Channel['set']>[1]} V */
/** @type {WeakMap<K & object, V> | undefined} */ var $wm;
/** @type {Channel | undefined} */ var $m;
/** @type {Channel} */
var channel = {
assert: function (key) {
if (!channel.has(key)) {
throw new $TypeError('Side channel does not contain ' + inspect(key));
}
},
'delete': function (key) {
if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
if ($wm) {
return $weakMapDelete($wm, key);
}
} else if (getSideChannelMap) {
if ($m) {
return $m['delete'](key);
}
}
return false;
},
get: function (key) {
if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
if ($wm) {
return $weakMapGet($wm, key);
}
}
return $m && $m.get(key);
},
has: function (key) {
if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
if ($wm) {
return $weakMapHas($wm, key);
}
}
return !!$m && $m.has(key);
},
set: function (key, value) {
if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {
if (!$wm) {
$wm = new $WeakMap();
}
$weakMapSet($wm, key, value);
} else if (getSideChannelMap) {
if (!$m) {
$m = getSideChannelMap();
}
// eslint-disable-next-line no-extra-parens
/** @type {NonNullable<typeof $m>} */ ($m).set(key, value);
}
}
};
// @ts-expect-error TODO: figure out why this is erroring
return channel;
}
: getSideChannelMap;