weakref
Version:
Extend built-in collections with weak references for efficient garbage collection and optimal performance in memory-intensive applications with IterableWeakSet, IterableWeakMap, and WeakValueMap.
69 lines (68 loc) • 2.83 kB
JavaScript
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _IterableWeakMap_weakMap, _IterableWeakMap_set;
import { IterableWeakSet } from "./iterable_weak_set.js";
export class IterableWeakMap {
constructor(iterable) {
_IterableWeakMap_weakMap.set(this, new WeakMap());
_IterableWeakMap_set.set(this, new IterableWeakSet());
for (const [key, value] of iterable ?? []) {
this.set(key, value);
}
}
get size() {
return __classPrivateFieldGet(this, _IterableWeakMap_set, "f").size;
}
clear() {
for (const key of __classPrivateFieldGet(this, _IterableWeakMap_set, "f")) {
this.delete(key);
}
}
delete(key) {
const ref = __classPrivateFieldGet(this, _IterableWeakMap_weakMap, "f").get(key);
if (ref) {
__classPrivateFieldGet(this, _IterableWeakMap_weakMap, "f").delete(key);
__classPrivateFieldGet(this, _IterableWeakMap_set, "f").delete(key);
return true;
}
return false;
}
get(key) {
return __classPrivateFieldGet(this, _IterableWeakMap_weakMap, "f").get(key);
}
has(key) {
return __classPrivateFieldGet(this, _IterableWeakMap_weakMap, "f").has(key);
}
set(key, value) {
__classPrivateFieldGet(this, _IterableWeakMap_weakMap, "f").set(key, value);
__classPrivateFieldGet(this, _IterableWeakMap_set, "f").add(key);
return this;
}
get [(_IterableWeakMap_weakMap = new WeakMap(), _IterableWeakMap_set = new WeakMap(), Symbol.toStringTag)]() {
return "IterableWeakMap";
}
forEach(callbackfn, thisArg) {
for (const [key, value] of this[Symbol.iterator]()) {
callbackfn.call(thisArg, value, key, this);
}
}
*[Symbol.iterator]() {
for (const key of __classPrivateFieldGet(this, _IterableWeakMap_set, "f")) {
yield [key, __classPrivateFieldGet(this, _IterableWeakMap_weakMap, "f").get(key)];
}
}
entries() {
return this[Symbol.iterator]();
}
keys() {
return __classPrivateFieldGet(this, _IterableWeakMap_set, "f")[Symbol.iterator]();
}
*values() {
for (const key of __classPrivateFieldGet(this, _IterableWeakMap_set, "f")) {
yield __classPrivateFieldGet(this, _IterableWeakMap_weakMap, "f").get(key);
}
}
}