{"id":115312,"date":"2024-04-25T09:22:49","date_gmt":"2024-04-25T07:22:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupna-javascript-platforma-node-js-22-0-0"},"modified":"2024-04-25T09:22:49","modified_gmt":"2024-04-25T07:22:49","slug":"dostupna-javascript-platforma-node-js-22-0-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/dostupna-javascript-platforma-node-js-22-0-0","title":{"rendered":"El\u00e9rhet\u0151 a Node.js 22.0.0 JavaScript platformja","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Megjelent a Node.js 22.0, a JavaScript nyelv\u0171 h\u00e1l\u00f3zati alkalmaz\u00e1sok futtat\u00e1s\u00e1hoz k\u00e9sz\u00fclt platform. A Node.js 22.0 az LTS (hossz\u00fa t\u00e1v\u00fa t\u00e1mogat\u00e1s) \u00e1gba tartozik, de ezt a st\u00e1tuszt csak okt\u00f3berben kapja meg a stabiliz\u00e1l\u00e1s ut\u00e1n. A Node.js 22.x t\u00e1mogat\u00e1sa 2027. \u00e1prilis 30-ig fog tartani. A kor\u00e1bbi LTS \u00e1g, a Node.js 20.x t\u00e1mogat\u00e1sa 2026. \u00e1prilis\u00e1ig, m\u00edg az azt megel\u0151z\u0151 LTS \u00e1g, a 18.x 2025. \u00e1prilis\u00e1ig lesz el\u00e9rhet\u0151. A k\u00f6zbens\u0151 \u00e1g, a Node.js 21.x t\u00e1mogat\u00e1sa 2024. j\u00fanius 1-j\u00e9n megsz\u0171nik.        <\/p>\n<p>F\u0151 fejleszt\u00e9sek:  <\/p>\n<ul>\n<li class=\"l\"> A V8 motor friss\u00edtve lett 12.4-es verzi\u00f3ra, amely a Chromium 124-ben tal\u00e1lhat\u00f3. A Node.js 21-hez k\u00e9pest, ahol a V8 11.8 volt haszn\u00e1latban, a k\u00f6vetkez\u0151 v\u00e1ltoz\u00e1sok tapasztalhat\u00f3k:\n<ul>\n<li class=\"l\"> T\u00e1mogatott a WasmGC kiterjeszt\u00e9s, amely megk\u00f6nny\u00edti a szem\u00e9tgy\u0171jt\u0151 nyelveken (mint p\u00e9ld\u00e1ul Kotlin, PHP, Java stb.) \u00edrt programok WebAssembly-be val\u00f3 portol\u00e1s\u00e1t. A WasmGC \u00faj t\u00edpust \u00e9s t\u00f6mb\u00f6ket ad hozz\u00e1, amelyekn\u00e9l alkalmazhat\u00f3 a nemline\u00e1ris mem\u00f3riaallok\u00e1ci\u00f3.\n<li class=\"l\"> T\u00e1mogatott az Array.fromAsync() met\u00f3dus, amely aszinkron m\u00f3dban visszaad egy \u00faj Array objektumot, amely t\u00f6mbszer\u0171 objektumokb\u00f3l \u00e1t m\u00e1solt p\u00e9ld\u00e1ny.\n<li class=\"l\"> T\u00e1mogatottak az iter\u00e1torokkal val\u00f3 munk\u00e1ra vonatkoz\u00f3 met\u00f3dusok, mint p\u00e9ld\u00e1ul .map, .filter, .find, .take, .drop, .forEach \u00e9s .reduce.\n<li class=\"l\"> T\u00e1mogatott a Set objektum, amely egy \u00e9rt\u00e9kt\u00f6m\u00f6r\u00edt\u00e9si gy\u0171jtem\u00e9nyt hat\u00e1roz meg, \u00e9s tartalmazza a halmazokkal val\u00f3 tipikus m\u0171veletek megval\u00f3s\u00edt\u00e1s\u00e1t, mint p\u00e9ld\u00e1ul metszetek, uni\u00f3k, k\u00fcl\u00f6nbs\u00e9gek \u00e9s kieg\u00e9sz\u00edt\u00e9sek.        <\/ul>\n<li class=\"l\"> Alap\u00e9rtelmez\u00e9s szerint aktiv\u00e1lva van a Maglev, egy optimaliz\u00e1l\u00f3 JIT ford\u00edt\u00f3, amely gyorsan gener\u00e1l nagy teljes\u00edtm\u00e9ny\u0171 g\u00e9pi k\u00f3dot akt\u00edvan haszn\u00e1lt JavaScript k\u00f3dokhoz. A Maglev aktiv\u00e1l\u00e1sa jelent\u0151sen felgyors\u00edtja a r\u00f6vid \u00e9let\u0171 CLI alkalmaz\u00e1sok m\u0171k\u00f6d\u00e9s\u00e9t, amelyek nem v\u00e9geznek hossz\u00fa folyamatokat, p\u00e9ld\u00e1ul a Jetstream teszt ideje 7,5%-kal, a Speedometer teszt ideje pedig 5%-kal cs\u00f6kken.\n<li class=\"l\"> A folyamok kezel\u00e9se felgyorsult a highWaterMark opci\u00f3 \u00e9rt\u00e9k\u00e9nek 16 KB-r\u00f3l 65 KB-ra emel\u00e9s\u00e9vel (ez hat\u00e1rozza meg a bejegyz\u00e9sek pufferez\u00e9si korl\u00e1tj\u00e1t). Ez a v\u00e1ltoztat\u00e1s megn\u00f6veli a mem\u00f3riafogyaszt\u00e1st, ez\u00e9rt azoknak az alkalmaz\u00e1soknak, amelyek korl\u00e1tozott RAM-mal m\u0171k\u00f6dnek, vissza kell \u00e1ll\u00edtaniuk a r\u00e9gi \u00e9rt\u00e9ket a setDefaultHighWaterMark() h\u00edv\u00e1s\u00e1val.\n<li class=\"l\"> N\u00f6velt\u00e9k a fetch() API \u00e9s a tesztel\u0151 teljes\u00edtm\u00e9ny\u00e9t az AbortSignal p\u00e9ld\u00e1nyok l\u00e9trehoz\u00e1s\u00e1nak hat\u00e9konys\u00e1g\u00e1nak jav\u00edt\u00e1s\u00e1val. N\u00f6velt\u00e9k az API-k teljes\u00edtm\u00e9ny\u00e9t, amelyek a f\u00e1jlrendszerekkel val\u00f3 szinkron m\u0171k\u00f6d\u00e9ssel kapcsolatosak.\n<li class=\"l\"> K\u00eds\u00e9rleti lehet\u0151s\u00e9g ny\u00edlt a \u201erequire()\u201d h\u00edv\u00e1s haszn\u00e1lat\u00e1ra JavaScript ESM (ECMAScript Modules) modulok szinkron bet\u00f6lt\u00e9s\u00e9re. Az ESM modulok a b\u00f6ng\u00e9sz\u0151kben haszn\u00e1latosak, \u00e9s lev\u00e1ltj\u00e1k a Node.js-re jellemz\u0151 CommonJS modulokat. A \u201erequire()\u201d seg\u00edts\u00e9g\u00e9vel t\u00f6rt\u00e9n\u0151 bet\u00f6lt\u00e9shez az ESM modulnak szinkron m\u00f3dban kell futnia (await n\u00e9lk\u00fcl a legmagasabb szinten). A t\u00e1mogat\u00e1s az \u201e--experimental-require-module\u201d kapcsol\u00f3val aktiv\u00e1lhat\u00f3.\n<li class=\"l\"> K\u00eds\u00e9rleti lehet\u0151s\u00e9g ker\u00fclt hozz\u00e1ad\u00e1sra a package.json f\u00e1jlban meghat\u00e1rozott szkriptek futtat\u00e1s\u00e1ra az \u201e--run \u201d paranccsal.\n<li class=\"l\"> A \u201enode --watch\u201d parancs stabil kateg\u00f3ri\u00e1ba ker\u00fclt, amely megval\u00f3s\u00edtja a figyel\u00e9si m\u00f3dot, biztos\u00edtva a folyamat \u00fajraind\u00edt\u00e1s\u00e1t a bet\u00f6lt\u00f6tt f\u00e1jl m\u00f3dos\u00edt\u00e1sa eset\u00e9n (p\u00e9ld\u00e1ul, ha a \u201enode --watch index.js\u201d parancsot futtatjuk, a folyamat automatikusan \u00fajraindul, ha az index.js f\u00e1jl m\u00f3dosul).\n<li class=\"l\"> Stabiliz\u00e1lt\u00e1k a be\u00e9p\u00edtett WebSocket API megval\u00f3s\u00edt\u00e1st, amely lehet\u0151v\u00e9 teszi a WebSocket haszn\u00e1lat\u00e1t kliens m\u00f3dban tov\u00e1bbi f\u00fcgg\u0151s\u00e9gek telep\u00edt\u00e9se n\u00e9lk\u00fcl.\n<li class=\"l\"> R\u00e9szleges t\u00e1mogat\u00e1st kaptak a Navigator API-hoz.\n<li class=\"l\"> A Webstreams API-ban hozz\u00e1adt\u00e1k a deflate-raw t\u00f6m\u00f6r\u00edt\u00e9si form\u00e1tum t\u00e1mogat\u00e1s\u00e1t.\n<li class=\"l\"> A node:fsmodule modulhoz glob \u00e9s globSync funkci\u00f3kat adtak az \u00e1tnevez\u00e9si mint\u00e1k alapj\u00e1n t\u00f6rt\u00e9n\u0151 f\u00e1jl-\u00fatvonal egyeztet\u00e9s\u00e9re.\n<li class=\"l\"> Jav\u00edtott\u00e1k a hib\u00e1san konfigur\u00e1lt IPv6 verem kezel\u00e9s\u00e9t. Megval\u00f3s\u00edtott\u00e1k a Happy Eyeballs algoritmust az IPv6 m\u0171k\u00f6d\u00e9s\u00e9vel kapcsolatos probl\u00e9m\u00e1k gyors visszavon\u00e1s\u00e1ra.\n<li class=\"l\"> Elavultt\u00e1 nyilv\u00e1n\u00edtott\u00e1k a util API-t.\n<li class=\"l\"> Friss\u00edtett\u00e9k a f\u00fcgg\u0151s\u00e9gek verzi\u00f3it: npm 10.5.1, libuv 1.48.0, simdutf 5.2.3, c-ares 1.28.1, zlib 1.3.0.1-motley-24c07df, simdjson 3.8.0, ada 2.7.7 \u00e9s undici 6.6.0.    <\/ul>\n<p>A Node.js platform szerver oldali webalkalmaz\u00e1sok m\u0171k\u00f6dtet\u00e9s\u00e9re, valamint hagyom\u00e1nyos kliens \u00e9s szerver h\u00e1l\u00f3zati programok k\u00e9sz\u00edt\u00e9s\u00e9re haszn\u00e1lhat\u00f3. A Node.js alkalmaz\u00e1sok funkcionalit\u00e1s\u00e1nak b\u0151v\u00edt\u00e9se \u00e9rdek\u00e9ben egy nagy modulgy\u0171jtem\u00e9ny k\u00e9sz\u00fclt, amely tartalmaz k\u00fcl\u00f6nb\u00f6z\u0151 megval\u00f3s\u00edt\u00e1s\u00fa modulokat.  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/\"   title=\"szerverek\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1550\">szerverek<\/a> \u00e9s HTTP, SMTP, XMPP, DNS, FTP, IMAP, POP3 klienseket, valamint modulokat k\u00fcl\u00f6nb\u00f6z\u0151 webkeretrendszerek integr\u00e1l\u00e1s\u00e1hoz, WebSocket \u00e9s Ajax kezel\u0151ket, az adatb\u00e1zisokhoz (MySQL, PostgreSQL, SQLite, MongoDB) val\u00f3 kapcsol\u00f3d\u00e1sokat, sablongener\u00e1torokat, CSS-motorokat, kriptogr\u00e1fiai algoritmusok \u00e9s hiteles\u00edt\u00e9si rendszerek (OAuth) megval\u00f3s\u00edt\u00e1sait, XML-parsereket.    <\/p>\n<p> A p\u00e1rhuzamos lek\u00e9r\u00e9sek nagy sz\u00e1m\u00fa feldolgoz\u00e1s\u00e1nak biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben a Node.js aszinkron k\u00f3dv\u00e9grehajt\u00e1si modellt alkalmaz, amely esem\u00e9nyek feldolgoz\u00e1s\u00e1n alapul nem blokkol\u00f3 m\u00f3dban, \u00e9s callback-kezel\u0151k defini\u00e1l\u00e1s\u00e1val. A kapcsolatok multiplexel\u00e9s\u00e9re olyan m\u00f3dszerek t\u00e1mogatottak, mint az epoll, kqueue, \/dev\/poll \u00e9s select. A kapcsolatok multiplexel\u00e9s\u00e9hez a libuv k\u00f6nyvt\u00e1rat haszn\u00e1lj\u00e1k, amely a libev f\u00f6l\u00e9 \u00e9p\u00fcl Unix rendszereken \u00e9s az IOCP f\u00f6l\u00e9 Windows alatt. A sz\u00e1lak medenc\u00e9j\u00e9nek (thread pool) l\u00e9trehoz\u00e1s\u00e1hoz a libeio k\u00f6nyvt\u00e1rat alkalmazz\u00e1k, m\u00edg a DNS-lek\u00e9rdez\u00e9sek nem blokkol\u00f3 m\u00f3d\u00fa v\u00e9grehajt\u00e1s\u00e1hoz a c-ares integr\u00e1lva van. Minden blokkol\u00f3 rendszerh\u00edv\u00e1s a sz\u00e1lak medenc\u00e9j\u00e9n bel\u00fcl t\u00f6rt\u00e9nik, majd, ak\u00e1rcsak a jelkezel\u0151k, az eredm\u00e9ny\u00fcket egy n\u00e9vtelen cs\u0151n (pipe) kereszt\u00fcl tov\u00e1bb\u00edtj\u00e1k.     <\/p>\n<p>A JavaScript-k\u00f3d v\u00e9grehajt\u00e1sa a Google \u00e1ltal fejlesztett V8 motor aktiv\u00e1l\u00e1s\u00e1val val\u00f3sul meg (tov\u00e1bb\u00e1 a Microsoft is fejleszti a Node.js alternat\u00edv\u00e1j\u00e1t a Chakra-Core motorral). A Node.js alapvet\u0151en hasonl\u00edt a Perl AnyEvent, Ruby Event Machine, Python Twisted \u00e9s a Tcl esem\u00e9nykezel\u00e9s\u00e9nek megval\u00f3s\u00edt\u00e1s\u00e1ra, azonban a Node.js esem\u00e9nyfeldolgoz\u00f3 ciklusa el van rejtve a fejleszt\u0151 el\u0151l, \u00e9s hasonl\u00edt a webalkalmaz\u00e1sban, b\u00f6ng\u00e9sz\u0151ben zajl\u00f3 esem\u00e9nykezel\u00e9sre.<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61067\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 22.0, \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 JavaScript. Node.js 22.0 \u043e\u0442\u043d\u0435\u0441\u0451\u043d \u043a \u0432\u0435\u0442\u043a\u0430\u043c \u0441 \u0434\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438, \u043d\u043e \u0434\u0430\u043d\u043d\u044b\u0439 \u0441\u0442\u0430\u0442\u0443\u0441 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u043e\u043a\u0442\u044f\u0431\u0440\u0435, \u043f\u043e\u0441\u043b\u0435 \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u0438. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 Node.js 22.x \u0431\u0443\u0434\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u0434\u043e 30 \u0430\u043f\u0440\u0435\u043b\u044f 2027 \u0433\u043e\u0434\u0430. \u0421\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 LTS-\u0432\u0435\u0442\u043a\u0438 Node.js 20.x \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2026 \u0433\u043e\u0434\u0430, \u0430 \u043f\u043e\u0437\u0430\u043f\u0440\u043e\u0448\u043b\u043e\u0439 LTS-\u0432\u0435\u0442\u043a\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-115312","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f 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