opusdev/vector-similarity-api

1'use strict';2 3var GetIntrinsic = require('get-intrinsic');4var callBound = require('call-bound');5var inspect = require('object-inspect');6var getSideChannelMap = require('side-channel-map');7 8var $TypeError = require('es-errors/type');9var $WeakMap = GetIntrinsic('%WeakMap%', true);10 11/** @type {<K extends object, V>(thisArg: WeakMap<K, V>, key: K) => V} */12var $weakMapGet = callBound('WeakMap.prototype.get', true);13/** @type {<K extends object, V>(thisArg: WeakMap<K, V>, key: K, value: V) => void} */14var $weakMapSet = callBound('WeakMap.prototype.set', true);15/** @type {<K extends object, V>(thisArg: WeakMap<K, V>, key: K) => boolean} */16var $weakMapHas = callBound('WeakMap.prototype.has', true);17/** @type {<K extends object, V>(thisArg: WeakMap<K, V>, key: K) => boolean} */18var $weakMapDelete = callBound('WeakMap.prototype.delete', true);19 20/** @type {import('.')} */21module.exports = $WeakMap22	? /** @type {Exclude<import('.'), false>} */ function getSideChannelWeakMap() {23		/** @typedef {ReturnType<typeof getSideChannelWeakMap>} Channel */24		/** @typedef {Parameters<Channel['get']>[0]} K */25		/** @typedef {Parameters<Channel['set']>[1]} V */26 27		/** @type {WeakMap<K & object, V> | undefined} */ var $wm;28		/** @type {Channel | undefined} */ var $m;29 30		/** @type {Channel} */31		var channel = {32			assert: function (key) {33				if (!channel.has(key)) {34					throw new $TypeError('Side channel does not contain ' + inspect(key));35				}36			},37			'delete': function (key) {38				if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {39					if ($wm) {40						return $weakMapDelete($wm, key);41					}42				} else if (getSideChannelMap) {43					if ($m) {44						return $m['delete'](key);45					}46				}47				return false;48			},49			get: function (key) {50				if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {51					if ($wm) {52						return $weakMapGet($wm, key);53					}54				}55				return $m && $m.get(key);56			},57			has: function (key) {58				if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {59					if ($wm) {60						return $weakMapHas($wm, key);61					}62				}63				return !!$m && $m.has(key);64			},65			set: function (key, value) {66				if ($WeakMap && key && (typeof key === 'object' || typeof key === 'function')) {67					if (!$wm) {68						$wm = new $WeakMap();69					}70					$weakMapSet($wm, key, value);71				} else if (getSideChannelMap) {72					if (!$m) {73						$m = getSideChannelMap();74					}75					// eslint-disable-next-line no-extra-parens76					/** @type {NonNullable<typeof $m>} */ ($m).set(key, value);77				}78			}79		};80 81		// @ts-expect-error TODO: figure out why this is erroring82		return channel;83	}84	: getSideChannelMap;85