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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/@dfinity/agent/lib/cjs/utils
Просмотр файла: expirableMap.js
"use strict";
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
if (kind === "m") throw new TypeError("Private method is not writable");
if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
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 _ExpirableMap_inner, _ExpirableMap_expirationTime, _a, _b;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ExpirableMap = void 0;
/**
* A map that expires entries after a given time.
* Defaults to 10 minutes.
*/
class ExpirableMap {
/**
* Create a new ExpirableMap.
* @param {ExpirableMapOptions<any, any>} options - options for the map.
* @param {Iterable<[any, any]>} options.source - an optional source of entries to initialize the map with.
* @param {number} options.expirationTime - the time in milliseconds after which entries will expire.
*/
constructor(options = {}) {
// Internals
_ExpirableMap_inner.set(this, void 0);
_ExpirableMap_expirationTime.set(this, void 0);
this[_a] = this.entries.bind(this);
this[_b] = 'ExpirableMap';
const { source = [], expirationTime = 10 * 60 * 1000 } = options;
const currentTime = Date.now();
__classPrivateFieldSet(this, _ExpirableMap_inner, new Map([...source].map(([key, value]) => [key, { value, timestamp: currentTime }])), "f");
__classPrivateFieldSet(this, _ExpirableMap_expirationTime, expirationTime, "f");
}
/**
* Prune removes all expired entries.
*/
prune() {
const currentTime = Date.now();
for (const [key, entry] of __classPrivateFieldGet(this, _ExpirableMap_inner, "f").entries()) {
if (currentTime - entry.timestamp > __classPrivateFieldGet(this, _ExpirableMap_expirationTime, "f")) {
__classPrivateFieldGet(this, _ExpirableMap_inner, "f").delete(key);
}
}
return this;
}
// Implementing the Map interface
/**
* Set the value for the given key. Prunes expired entries.
* @param key for the entry
* @param value of the entry
* @returns this
*/
set(key, value) {
this.prune();
const entry = {
value,
timestamp: Date.now(),
};
__classPrivateFieldGet(this, _ExpirableMap_inner, "f").set(key, entry);
return this;
}
/**
* Get the value associated with the key, if it exists and has not expired.
* @param key K
* @returns the value associated with the key, or undefined if the key is not present or has expired.
*/
get(key) {
const entry = __classPrivateFieldGet(this, _ExpirableMap_inner, "f").get(key);
if (entry === undefined) {
return undefined;
}
if (Date.now() - entry.timestamp > __classPrivateFieldGet(this, _ExpirableMap_expirationTime, "f")) {
__classPrivateFieldGet(this, _ExpirableMap_inner, "f").delete(key);
return undefined;
}
return entry.value;
}
/**
* Clear all entries.
*/
clear() {
__classPrivateFieldGet(this, _ExpirableMap_inner, "f").clear();
}
/**
* Entries returns the entries of the map, without the expiration time.
* @returns an iterator over the entries of the map.
*/
entries() {
const iterator = __classPrivateFieldGet(this, _ExpirableMap_inner, "f").entries();
const generator = function* () {
for (const [key, value] of iterator) {
yield [key, value.value];
}
};
return generator();
}
/**
* Values returns the values of the map, without the expiration time.
* @returns an iterator over the values of the map.
*/
values() {
const iterator = __classPrivateFieldGet(this, _ExpirableMap_inner, "f").values();
const generator = function* () {
for (const value of iterator) {
yield value.value;
}
};
return generator();
}
/**
* Keys returns the keys of the map
* @returns an iterator over the keys of the map.
*/
keys() {
return __classPrivateFieldGet(this, _ExpirableMap_inner, "f").keys();
}
/**
* forEach calls the callbackfn on each entry of the map.
* @param callbackfn to call on each entry
* @param thisArg to use as this when calling the callbackfn
*/
forEach(callbackfn, thisArg) {
for (const [key, value] of __classPrivateFieldGet(this, _ExpirableMap_inner, "f").entries()) {
callbackfn.call(thisArg, value.value, key, this);
}
}
/**
* has returns true if the key exists and has not expired.
* @param key K
* @returns true if the key exists and has not expired.
*/
has(key) {
return __classPrivateFieldGet(this, _ExpirableMap_inner, "f").has(key);
}
/**
* delete the entry for the given key.
* @param key K
* @returns true if the key existed and has been deleted.
*/
delete(key) {
return __classPrivateFieldGet(this, _ExpirableMap_inner, "f").delete(key);
}
/**
* get size of the map.
* @returns the size of the map.
*/
get size() {
return __classPrivateFieldGet(this, _ExpirableMap_inner, "f").size;
}
}
exports.ExpirableMap = ExpirableMap;
_ExpirableMap_inner = new WeakMap(), _ExpirableMap_expirationTime = new WeakMap(), _a = Symbol.iterator, _b = Symbol.toStringTag;
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