{"id":22628,"date":"2022-04-26T18:33:52","date_gmt":"2022-04-26T16:33:52","guid":{"rendered":"https:\/\/www.nycwebdesign.eu\/webdesign\/node-js-18-con-fetch-api\/"},"modified":"2022-04-26T18:33:52","modified_gmt":"2022-04-26T16:33:52","slug":"node-js-18-con-fetch-api","status":"publish","type":"post","link":"https:\/\/www.nycwebdesign.eu\/webdesign\/node-js-18-con-fetch-api\/","title":{"rendered":"Node.js 18 con fetch API"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div>\n<p>Il runtime environment server side JavaScript <strong>Node.js<\/strong> \u00e8 giunto di recente alla sua 18\u00aa release, un aggiornamento che lo scorso ottobre venne promosso al rango di LTS (<em>Long Term Support<\/em>) e continuer\u00e0 ad essere implementata fino ad Aprile 2025.<!--more--><\/p>\n<h2 id=\"la-fetch-api-ufficiale-di-node-js\">La fetch API ufficiale di Node.js<\/h2>\n<p>Tra le novit\u00e0 pi\u00f9 interessanti di Node.js 18 troviamo sicuramente l&#8217;introduzione di una <strong>fetch API ufficiale<\/strong>, su tratta per\u00f2 di una feature ancora in fase sperimentale ed \u00e8 possibile che nel corso dei test possano registrarsi dei comportamenti inattesi.<\/p>\n<p>Questa interfaccia di programmazione rappresenta un&#8217;implementazione nativa della fetch API gi\u00e0 utilizzata da tempo nei browser per la navigazione Web con lo scopo di recuperare risorse in modalit\u00e0 asincrona attraverso un network.<\/p>\n<p>A questo proposito \u00e8 comunque bene ricordare che l&#8217;ambiente di Node.js \u00e8 totalmente diverso rispetto a quello di un browser ed \u00e8 legittimo attendersi risultati differenti. <\/p>\n<p>\u00c8 inoltre utile ricordare che la fetch API di Node.js si basa sul modulo <code>node-fetch<\/code> appositamente pensato per portare l&#8217;omonima interfaccia nel runtime system basato sul motore JavaScript V8 di Chrome.<\/p>\n<h2 id=\"il-modulo-test-runner\">Il modulo test runner<\/h2>\n<p>Ad essere ancora in fase sperimentale \u00e8 anche il modulo <strong>test runner<\/strong> concepito per restituire risultati nel formato <strong>TAP<\/strong> (<em>Test Anything Protocol<\/em>) che \u00e8 considerato uno standard per le comunicazioni tra <strong>unit test<\/strong> e <strong>test harness<\/strong>.<\/p>\n<p>Uno dei vantaggi di questo modulo risiede nel fatto che esso supporta sia la modalit\u00e0 sincrona che quella asincrona e gli output generati possono essere interpretati tramite qualsiasi test harness compatibili con TAP.<\/p>\n<h2 id=\"moduli-prefix-only\">Moduli prefix-only<\/h2>\n<p>Il team di sviluppo di Node.js ha voluto sottolineare che tra le funzionalit\u00e0 principali di Node.js 18 vi sono anche i <strong>moduli prefix-only<\/strong>. Questi ultimi nascono per facilitare l&#8217;integrazione di nuovi moduli nel core senza dover fronteggiare problematiche relative ai conflitti basati sui nomi.<\/p>\n<p>Non a caso test runner si presenta come il primo modulo prefix-only e per caricarlo \u00e8 necessario fare riferimento al suo prefisso (<code>node:test<\/code>). Nel caso in cui si tentasse di importare o richiedere un modulo &#8220;<code>test<\/code>&#8221; Node.js effettuer\u00e0 la ricerca di un modulo omonimo che non fa parte del core.<\/p>\n<\/p><\/div>\n<p><br \/>\n<br \/><a href=\"https:\/\/www.html.it\/magazine\/node-js-18-con-fetch-api\/\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Il runtime environment server side JavaScript Node.js \u00e8 giunto di recente alla sua 18\u00aa release, un aggiornamento che lo scorso ottobre venne promosso al rango di LTS (Long Term Support) e continuer\u00e0 ad essere implementata fino ad Aprile 2025.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_s2mail":""},"categories":[37],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.13 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Node.js 18 con fetch API - AGENZIA WEB Italia<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.nycwebdesign.eu\/webdesign\/node-js-18-con-fetch-api\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Node.js 18 con fetch API - 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