{"id":69424,"date":"2020-02-19T08:45:31","date_gmt":"2020-02-19T05:45:31","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/proekt-deno-razvivaet-zashhishhyonnuyu-javascript-platformu-pohozhuyu-na-node-js"},"modified":"2020-03-03T16:11:16","modified_gmt":"2020-03-03T13:11:16","slug":"proekt-deno-razvivaet-zashhishhyonnuyu-javascript-platformu-pohozhuyu-na-node-js","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/proekt-deno-razvivaet-zashhishhyonnuyu-javascript-platformu-pohozhuyu-na-node-js","title":{"rendered":"\u041f\u0440\u043e\u0435\u043a\u0442 Deno \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u0443\u044e JavaScript-\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0443, \u043f\u043e\u0445\u043e\u0436\u0443\u044e \u043d\u0430 Node.js","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/denoland\/deno\/releases\">Dost\u0119pny<\/a><\/noindex> wydanie projektu <noindex><a rel=\"nofollow\" href=\"https:\/\/deno.land\/\">Deno 0.33<\/a><\/noindex>, oferuj\u0105ca zbli\u017con\u0105 do Node.js platform\u0119 do wykonywania aplikacji w JavaScript i TypeScript, kt\u00f3ra mo\u017ce by\u0107 u\u017cywana do uruchamiania aplikacji bez przymusu przegl\u0105darki, na przyk\u0142ad do tworzenia handler\u00f3w dzia\u0142aj\u0105cych na serwerze. W Deno u\u017cywany jest silnik JavaScript, <noindex><a rel=\"nofollow\" href=\"https:\/\/v8.dev\/\">V8<\/a><\/noindex>, kt\u00f3ry stosowany jest r\u00f3wnie\u017c w Node.js i przegl\u0105darkach opartych na projekcie Chromium. Kod projektu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/denoland\/deno\">rozpowszechniany<\/a><\/noindex> jest obj\u0119ty licencj\u0105 MIT. Projekt rozwija Ryan Dahl (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Ryan_Dahl\">Ryan Dahl<\/a><\/noindex>), tw\u00f3rca platformy JavaScript Node.js. <\/p>\n<p>Jednym z g\u0142\u00f3wnych cel\u00f3w stworzenia nowego \u015brodowiska uruchomieniowego dla JavaScript jest zapewnienie bardziej bezpiecznego otoczenia. Aby zwi\u0119kszy\u0107 bezpiecze\u0144stwo, otoczka wok\u00f3\u0142 silnika V8 jest napisana w j\u0119zyku Rust, co pozwala unikn\u0105\u0107 wielu luk bezpiecze\u0144stwa wynikaj\u0105cych z niskopoziomowej pracy z pami\u0119ci\u0105, takich jak dost\u0119p do obszaru pami\u0119ci po jego zwolnieniu, dereferencja wska\u017anik\u00f3w zerowych i przekroczenie granic bufora. Do obs\u0142ugi \u017c\u0105da\u0144 w trybie nieblokuj\u0105cym stosowana jest platforma <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/tokio-rs\/tokio\">Tokio<\/a><\/noindex>, r\u00f3wnie\u017c napisana w j\u0119zyku Rust. Tokio umo\u017cliwia tworzenie aplikacji o wysokiej wydajno\u015bci opartych na architekturze zdarzeniowej (Event-driven), obs\u0142uguj\u0105cych wielow\u0105tkowo\u015b\u0107 i przetwarzanie \u017c\u0105da\u0144 sieciowych w trybie asynchronicznym.<\/p>\n<p>Podstawowe <noindex><a rel=\"nofollow\" href=\"https:\/\/deno.land\/std\/manual.md\">cechy<\/a><\/noindex> Deno:<\/p>\n<ul>\n<li class=\"l\"> Skoncentrowanie na bezpiecze\u0144stwie w domy\u015blnej konfiguracji. Dost\u0119pu do plik\u00f3w, mo\u017cliwo\u015bci sieciowe i dost\u0119p do zmiennych \u015brodowiskowych s\u0105 domy\u015blnie zablokowane i wymagaj\u0105 wyra\u017anego w\u0142\u0105czenia;\n<li class=\"l\"> Wbudowane wsparcie dla j\u0119zyka TypeScript opr\u00f3cz JavaScript;\n<li class=\"l\"> Runtime jest dostarczany w formie jednego samodzielnego pliku wykonywalnego (&#171;deno&#187;). Aby uruchomi\u0107 aplikacje za pomoc\u0105 Deno, wystarczy <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/denoland\/deno\/releases\">pobra\u0107<\/a><\/noindex> na swoj\u0105 platform\u0119 jeden plik wykonywalny o rozmiarze oko\u0142o 10 MB, nie maj\u0105cy zewn\u0119trznych zale\u017cno\u015bci i nie wymagaj\u0105cy \u017cadnej specjalnej instalacji w systemie;\n<li class=\"l\"> Podczas uruchamiania programu oraz do \u0142adowania modu\u0142\u00f3w mo\u017cna korzysta\u0107 z adresacji przez URL. Na przyk\u0142ad, aby uruchomi\u0107 program welcome.js, mo\u017cna u\u017cy\u0107 polecenia \u201edeno https:\/\/deno.land\/std\/examples\/welcome.js\u201d. Kod z zewn\u0119trznych \u017ar\u00f3de\u0142 jest pobierany i buforowany w lokalnym systemie, lecz nigdy nie jest automatycznie aktualizowany (aby go zaktualizowa\u0107, nale\u017cy jawnie uruchomi\u0107 aplikacj\u0119 z flag\u0105 \u201e\u2014reload\u201d);\n<li class=\"l\"> Skuteczna obs\u0142uga \u017c\u0105da\u0144 sieciowych HTTP w aplikacjach, platforma jest zaprojektowana do tworzenia wysokowydajnych aplikacji sieciowych;\n<li class=\"l\"> Mo\u017cliwo\u015b\u0107 tworzenia uniwersalnych aplikacji webowych, kt\u00f3re mog\u0105 dzia\u0142a\u0107 zar\u00f3wno w Deno, jak i w zwyk\u0142ej przegl\u0105darce internetowej;\n<li class=\"l\"> Opr\u00f3cz runtime, platforma Deno pe\u0142ni r\u00f3wnie\u017c rol\u0119 mened\u017cera pakiet\u00f3w i umo\u017cliwia odnoszenie si\u0119 do modu\u0142\u00f3w w kodzie za pomoc\u0105 URL. Na przyk\u0142ad, aby za\u0142adowa\u0107 modu\u0142, mo\u017cna w kodzie wskaza\u0107 &#171;import * as log from &#171;https:\/\/deno.land\/std\/log\/mod.ts&#187;. Pliki za\u0142adowane z zewn\u0119trznych serwer\u00f3w przez URL s\u0105 buforowane. Powi\u0105zanie z wersjami modu\u0142\u00f3w okre\u015bla si\u0119 poprzez podawanie numer\u00f3w wersji w URL, na przyk\u0142ad &#171;https:\/\/unpkg.com\/liltest@0.0.5\/dist\/liltest.js&#187;;\n<li class=\"l\"> W sk\u0142ad wchodzi zintegrowany system inspekcji zale\u017cno\u015bci (komenda &#171;deno info&#187;) oraz narz\u0119dzie do formatowania kodu (deno fmt).\n<li class=\"l\"> Dla tw\u00f3rc\u00f3w aplikacji <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/denoland\/deno\/tree\/master\/std\">zaproponowano<\/a><\/noindex> zestaw standardowych modu\u0142\u00f3w, kt\u00f3re przesz\u0142y dodatkowy audyt i testy kompatybilno\u015bci;\n<li class=\"l\"> Wszystkie skrypty aplikacji mog\u0105 zosta\u0107 po\u0142\u0105czone w jeden plik JavaScript.\n<\/ul>\n<p> R\u00f3\u017cnice w stosunku do Node.js:<\/p>\n<ul>\n<li class=\"l\"> Deno nie korzysta z mened\u017cera pakiet\u00f3w npm<br \/>\n i nie jest powi\u0105zany z repozytoriami, adresowanie modu\u0142\u00f3w odbywa si\u0119 za pomoc\u0105 URL lub \u015bcie\u017cki plik\u00f3w, a same modu\u0142y mog\u0105 by\u0107 umieszczone na dowolnej stronie;<\/p>\n<li class=\"l\"> W Deno nie u\u017cywa si\u0119 &#171;package.json&#187; do definiowania modu\u0142\u00f3w;\n<li class=\"l\"> R\u00f3\u017cnice w API, wszystkie asynchroniczne operacje w Deno zwracaj\u0105 obietnic\u0119;\n<li class=\"l\"> Deno wymaga jawnego okre\u015blenia wszystkich potrzebnych uprawnie\u0144 dla plik\u00f3w, sieci i zmiennych \u015brodowiskowych;\n<li class=\"l\"> Wszystkie b\u0142\u0119dy, kt\u00f3re nie maj\u0105 obs\u0142ugi, prowadz\u0105 do zako\u0144czenia dzia\u0142ania aplikacji;\n<li class=\"l\"> W Deno stosuje si\u0119 system modu\u0142\u00f3w ECMAScript i nie obs\u0142uguje require().\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52387\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Deno 0.33, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u0445\u043e\u0436\u0443\u044e \u043d\u0430 Node.js \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0443 \u0434\u043b\u044f \u043e\u0431\u043e\u0441\u043e\u0431\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 JavaScript \u0438 TypeScript, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0430 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0431\u0435\u0437 \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0438 \u043a \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0443, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0445 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435. \u0412 Deno \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f JavaScript-\u0434\u0432\u0438\u0436\u043e\u043a V8, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0442\u0430\u043a\u0436\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0432 Node.js \u0438 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430\u0445 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Chromium. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 [&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-69424","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Deno 0.33, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u0445\u043e\u0436\u0443\u044e \u043d\u0430.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" 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