{"id":120128,"date":"2024-10-10T13:09:15","date_gmt":"2024-10-10T11:09:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupna-platforma-deno-2-0-razvivaemaya-avtorom-node-js"},"modified":"2024-10-10T13:09:15","modified_gmt":"2024-10-10T11:09:15","slug":"dostupna-platforma-deno-2-0-razvivaemaya-avtorom-node-js","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/dostupna-platforma-deno-2-0-razvivaemaya-avtorom-node-js","title":{"rendered":"\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430 Deno 2.0, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u0430\u044f \u0430\u0432\u0442\u043e\u0440\u043e\u043c Node.js","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00c8 stata pubblicata la versione 2.0 della piattaforma Deno, progettata per l'esecuzione isolata di applicazioni server scritte in JavaScript e TypeScript utilizzando il motore V8, impiegato nei browser basati su Chromium. Il progetto Deno \u00e8 sviluppato da Ryan Dahl, creatore di Node.js, con l'obiettivo di fornire un ambiente pi\u00f9 sicuro e di correggere gli errori concettuali presenti nell'architettura di Node.js. Per aumentare la sicurezza, il wrapper attorno al motore V8 \u00e8 scritto in Rust, e per la gestione delle richieste in modalit\u00e0 non bloccante si utilizza la piattaforma Tokio. Il codice del progetto \u00e8 distribuito con licenza MIT. Le build sono disponibili per Linux, Windows e macOS.        <\/p>\n<p>Nella preparazione del nuovo ramo, particolare attenzione \u00e8 stata rivolta alla compatibilit\u00e0 con la vecchia infrastruttura JavaScript e all'ampliamento dello spettro dei progetti JavaScript supportati senza compromettere la sicurezza. Tra le modifiche:  <\/p>\n<ul>\n<li class=\"l\"> \u00c8 stata implementata la retrocompatibilit\u00e0 con Node.js e npm, consentendo l'esecuzione di applicazioni non modificate create per Node.js. Il supporto per Node.js offre anche la possibilit\u00e0 di migrare gradualmente progetti esistenti da Node.js a Deno o di integrare dipendenze da NPM in progetti Deno specificando il prefisso &#171;npm:&#187; durante l'importazione dei pacchetti in deno.json.\n<li class=\"l\"> \u00c8 stata aggiunta la supporto integrato per il file package.json e la cartella node_modules, utilizzati in Node.js.\n<li class=\"l\"> \u00c8 stato garantito il supporto per repository NPM privati, definiti tramite file &#171;.npmrc&#187;.\n<li class=\"l\"> \u00c8 stato aggiunto il supporto per i popolari framework JavaScript, come Next.js, Astro, Remix, Angular, SvelteKit e QwikCity.\n<li class=\"l\"> \u00c8 stato aggiunto il supporto per gli spazi di lavoro npm (workspace) e i monorepository (monorepo) con gestione separata delle dipendenze.\n<li class=\"l\"> Sono stati aggiunti nuovi comandi per la gestione dei pacchetti: &#171;deno install&#187; per installare dipendenze, &#171;deno add&#187; per aggiungere pacchetti a package.json o deno.json, &#171;deno remove&#187; per rimuovere pacchetti. Si osserva che &#171;deno install&#187; \u00e8 circa 15 volte pi\u00f9 veloce di npm in assenza di pacchetti nella cache e 90% pi\u00f9 veloce quando il pacchetto \u00e8 presente nella cache (supporta sia node_modules che una cache globale propria).\n<li class=\"l\"> La libreria standard \u00e8 stata stabilizzata.\n<li class=\"l\"> \u00c8 garantito un ciclo di supporto prolungato (LTS).\n<li class=\"l\"> \u00c8 stato introdotto JSR \u2014 un repository con librerie JavaScript e TypeScript utilizzabili in vari runtime JavaScript.\n<li class=\"l\"> Nel comando &#171;deno fmt&#187; \u00e8 stata aggiunta la possibilit\u00e0 di formattare contenuti nei formati HTML, CSS e YAML.\n<li class=\"l\"> Nel comando &#171;deno lint&#187; \u00e8 stato aggiunto il supporto per regole e correzioni specifiche di Node.js.\n<li class=\"l\"> Nel comando &#171;deno test&#187; \u00e8 stata implementata la possibilit\u00e0 di eseguire test creati utilizzando node:test.\n<li class=\"l\"> Nel comando &#171;deno task&#187; \u00e8 stato implementato il supporto per l'esecuzione di script tramite package.json.\n<li class=\"l\"> Nel comando &#171;deno compile&#187; \u00e8 stata aggiunta la possibilit\u00e0 di firmare digitalmente il codice.\n<li class=\"l\"> Nel comando &#171;deno serve&#187; \u00e8 stata implementata la parallelizzazione delle operazioni dei server HTTP utilizzando pi\u00f9 core CPU.\n<li class=\"l\"> Nel comando &#171;deno coverage&#187; \u00e8 stato aggiunto il supporto per il salvataggio dei rapporti in formato HTML.\n<li class=\"l\"> Ottimizzazione delle prestazioni eseguita.    <center><img decoding=\"async\" alt=\"\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430 Deno 2.0, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u0430\u044f \u0430\u0432\u0442\u043e\u0440\u043e\u043c Node.js\" src=\"\/wp-content\/uploads\/2024\/10\/be70c578e8bba6dfbe01cca4a159b36e.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/ul>\n<p>Caratteristiche principali di Deno:  <\/p>\n<ul>\n<li class=\"l\"> Orientamento alla sicurezza nella configurazione predefinita. Le richieste ai file, le capacit\u00e0 di rete e l'accesso alle variabili ambientali per impostazione predefinita sono bloccati e richiedono un'attivazione esplicita. Le applicazioni predefinite vengono eseguite in ambienti sandbox isolati e non possono accedere alle capacit\u00e0 di sistema senza concessione di autorizzazioni esplicite;    <\/li>\n<li class=\"l\"> Supporto integrato per il linguaggio TypeScript oltre a JavaScript. Per il controllo dei tipi e la generazione di JavaScript viene utilizzato un compilatore TypeScript incorporato, il che comporta un degrado delle prestazioni rispetto all'analisi di JavaScript in V8;      <\/li>\n<li class=\"l\"> Il runtime \u00e8 fornito come un unico file eseguibile indipendente (&#171;deno&#187;). Per eseguire applicazioni tramite Deno \u00e8 sufficiente scaricare un file eseguibile per la propria piattaforma, grande circa 40 MB, senza dipendenze esterne e senza necessit\u00e0 di una particolare installazione nel sistema. Deno non \u00e8 un'applicazione monolitica, ma rappresenta una collezione di pacchetti crate in Rust (deno_core, rusty_v8) che possono essere utilizzati separatamente;      <\/li>\n<li class=\"l\"> All'avvio del programma e per il caricamento dei moduli \u00e8 possibile utilizzare indirizzi tramite URL. Ad esempio, per eseguire il programma welcome.js, si pu\u00f2 utilizzare il comando &#171;deno https:\/\/deno.land\/std\/examples\/welcome.js&#187;. Il codice da risorse esterne viene scaricato e memorizzato nella cache sulla sistema locale, ma non viene mai aggiornato automaticamente (per l'aggiornamento \u00e8 necessario avviare esplicitamente l'applicazione con il flag &#171;&#8212;reload&#187;);      <\/li>\n<li class=\"l\"> Gestione efficace delle richieste di rete HTTP nelle applicazioni; la piattaforma \u00e8 progettata per creare applicazioni di rete ad alte prestazioni.    <\/li>\n<li class=\"l\"> Possibilit\u00e0 di creare applicazioni web universali, che possono essere eseguite sia in Deno che in un normale browser web.    <\/li>\n<li class=\"l\"> Presenza di un insieme standard di moduli, il cui utilizzo non richiede dipendenze esterne. I moduli della collezione standard hanno superato un audit aggiuntivo e controlli di compatibilit\u00e0;      <\/li>\n<li class=\"l\"> Oltre al runtime, la piattaforma Deno funge anche da gestore di pacchetti e consente l'accesso ai moduli tramite URL nel codice. Ad esempio, per caricare un modulo, si pu\u00f2 specificare nel codice &#171;import * as log from &#171;https:\/\/deno.land\/std\/log\/mod.ts&#187;. I file caricati da esterni <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1733\">server<\/a> da URL vengono memorizzati nella cache. Il binding alle versioni dei moduli \u00e8 definito tramite specifiche di numeri di versione all'interno dell'URL, ad esempio, &#171;https:\/\/unpkg.com\/liltest@0.0.5\/dist\/liltest.js&#187;;\n<li class=\"l\"> Orientamento all'uso degli standard Web, supporto per Promise, fetch e moduli ECMAScript.\n<li class=\"l\"> Compatibilit\u00e0 con pacchetti ospitati nel repository NPM e creati per la piattaforma Node.js.    <\/li>\n<li class=\"l\"> \u00c8 integrato un sistema di ispettore delle dipendenze (comando &#171;deno info&#187;) e un'utilit\u00e0 per la formattazione del codice (deno fmt);    <\/li>\n<li class=\"l\"> Tutti gli script dell'applicazione possono essere combinati in un unico file JavaScript.      <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62024\">opennet.ru<\/a> 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\u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 Chromium. \u041f\u0440\u043e\u0435\u043a\u0442 Deno \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u0420\u0430\u0439\u0430\u043d \u0414\u0430\u043b\u044c (Ryan Dahl), \u0441\u043e\u0437\u0434\u0430\u0442\u0435\u043b\u044c Node.js, \u0441 \u0446\u0435\u043b\u044c\u044e \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0431\u043e\u043b\u0435\u0435 \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u043e\u0433\u043e \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u043d\u0446\u0435\u043f\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043e\u0448\u0438\u0431\u043e\u043a, \u0434\u043e\u043f\u0443\u0449\u0435\u043d\u043d\u044b\u0445 \u0432 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435 Node.js. \u0414\u043b\u044f \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0431\u0432\u044f\u0437\u043a\u0430 \u0432\u043e\u043a\u0440\u0443\u0433 \u0434\u0432\u0438\u0436\u043a\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":120129,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-120128","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Deno 2.0, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 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