{"id":102260,"date":"2021-11-10T15:36:45","date_gmt":"2021-11-10T13:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-javascript-platformy-deno-1-16"},"modified":"2021-11-10T15:36:45","modified_gmt":"2021-11-10T13:36:45","slug":"vypusk-javascript-platformy-deno-1-16","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/vypusk-javascript-platformy-deno-1-16","title":{"rendered":"Vydanie platformy JavaScript Deno 1.16","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bola vydan\u00e1 JavaScript platforma Deno 1.16, ur\u010den\u00e1 na samostatn\u00e9 sp\u00fa\u0161\u0165anie (bez pou\u017eitia prehliada\u010da) aplik\u00e1ci\u00ed nap\u00edsan\u00fdch v jazykoch JavaScript a TypeScript. Projekt sa vyv\u00edja autorom Node.js Ryanom Dahlem. K\u00f3d platformy je nap\u00edsan\u00fd v programovacom jazyku Rust a distribuuje sa pod licenciou MIT. Hotov\u00e9 zostavy s\u00fa pripraven\u00e9 pre Linux, Windows a macOS.    <\/p>\n<p>Projekt je podobn\u00fd platforme Node.js a, podobne ako ona, pou\u017e\u00edva JavaScript engine V8, av\u0161ak, pod\u013ea slov autora Node.js, opravuje nieko\u013eko architektonick\u00fdch ch\u00fdb svojho predchodcu a odli\u0161uje sa od neho nasleduj\u00facimi nuansami:  <\/p>\n<ul>\n<li class=\"l\"> Pou\u017eitie jazyka Rust ako hlavn\u00e9ho jazyka, \u010do pod\u013ea n\u00e1zorov v\u00fdvoj\u00e1rov zni\u017euje riziko vzniku zranite\u013enost\u00ed spojen\u00fdch s n\u00edzko\u00farov\u0148ovou pr\u00e1cou s pam\u00e4\u0165ou (preplnenie z\u00e1sobn\u00edka, use-after-free at\u010f.);\n<li class=\"l\"> Deno nepou\u017e\u00edva spr\u00e1vcu bal\u00edkov npm a package.json, pon\u00fakaj\u00fa pou\u017e\u00edvate\u013eovi in\u0161tal\u00e1ciu modulov prostredn\u00edctvom uv\u00e1dzan\u00e9ho URL alebo cesty k modulu na in\u0161tal\u00e1ciu. Napriek tomu projekt pon\u00faka nieko\u013eko util\u00edt na zjednodu\u0161enie pr\u00e1ce so zdie\u013ean\u00fdmi modulmi;\n<li class=\"l\"> Aplik\u00e1cie sa sp\u00fa\u0161\u0165aj\u00fa oddelene v pieskovisku a nemaj\u00fa pr\u00edstup k sieti, premenn\u00fdm prostredia a s\u00faborov\u00e9mu syst\u00e9mu bez v\u00fdslovne udelen\u00fdch opr\u00e1vnen\u00ed;\n<li class=\"l\"> V architekt\u00fare je zakotven\u00e1 mo\u017enos\u0165 vytv\u00e1rania univerz\u00e1lnych webov\u00fdch aplik\u00e1ci\u00ed, ktor\u00e9 dok\u00e1\u017eu fungova\u0165 ako v syst\u00e9me Deno, tak aj v be\u017enom prehliada\u010di;\n<li class=\"l\"> Pou\u017e\u00edvanie \u201eES Module\u201c a absencia podpory require();\n<li class=\"l\"> Ak\u00e9ko\u013evek nezpracovan\u00e9 chyby program\u00e1tora vo webovej aplik\u00e1cii ved\u00fa k ich n\u00faten\u00e9mu ukon\u010deniu;\n<li class=\"l\"> Podpora TypeScript okrem JavaScriptu;\n<li class=\"l\"> Celkov\u00e1 ve\u013ekos\u0165 hotovej platformy \u2014 84 MB (v zip arch\u00edve \u2014 31 MB) ako jeden spustite\u013en\u00fd s\u00fabor;\n<li class=\"l\"> V s\u00faprave sa pon\u00faka syst\u00e9m rie\u0161enia z\u00e1vislost\u00ed a form\u00e1tovania k\u00f3du;\n<li class=\"l\"> S\u00fa orientovan\u00e9 na vysoko v\u00fdkonn\u00e9 aplik\u00e1cie.  <\/ul>\n<p>Dino spracov\u00e1va po\u017eiadavky v neblokuj\u00facom re\u017eime s pou\u017eit\u00edm platformy Tokio, ur\u010den\u00e9 na vytv\u00e1ranie vysoko v\u00fdkonn\u00fdch aplik\u00e1ci\u00ed zalo\u017een\u00fdch na udalostiach (event-driven) architekt\u00fary. Zauj\u00edmav\u00e9 je, \u017ee zabudovan\u00fd HTTP server Deno je implementovan\u00fd na TypeScript nad nat\u00edvnymi TCP socketmi, \u010do pozit\u00edvne ovplyv\u0148uje v\u00fdkon sie\u0165ov\u00fdch oper\u00e1ci\u00ed.    <\/p>\n<p>V novej verzii sa zaznamen\u00e1va:  <\/p>\n<ul>\n<li class=\"l\"> Optimaliz\u00e1cia v\u00fdkonu (4 opravy);\n<li class=\"l\"> Oprava viac ako 15 ch\u00fdb, vr\u00e1tane podpory HTTP\/2 pre TLS klienta, podpora dodato\u010dn\u00fdch k\u00f3dovac\u00edch zna\u010diek v k\u00f3dovacej subsyst\u00e9me a \u010fal\u0161ie.\n<li class=\"l\"> Viac ako dve desiatky noviniek, medzi ktor\u00fdmi stoj\u00ed za zmienku stabiliz\u00e1cia predt\u00fdm testovan\u00fdch subsyst\u00e9mov Deno.startTls a Deno.TestDefinition.permissions, aktualiz\u00e1cia JS enginu V8 na verziu 9.7 a podpora transform\u00e1ci\u00ed React 17 JSX.  <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56129\">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 JavaScript-\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Deno 1.16, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \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 (\u0431\u0435\u0437 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430) \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u044f\u0437\u044b\u043a\u0430\u0445 JavaScript \u0438 TypeScript. \u041f\u0440\u043e\u0435\u043a\u0442 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0430\u0432\u0442\u043e\u0440\u043e\u043c Node.js \u0420\u0430\u0439\u0430\u043d\u043e\u043c \u0414\u0430\u043b\u0435\u043c (Ryan Dahl). \u041a\u043e\u0434 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f Rust \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 MIT. \u0413\u043e\u0442\u043e\u0432\u044b\u0435 \u0441\u0431\u043e\u0440\u043a\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u044b \u0434\u043b\u044f Linux, Windows \u0438 macOS. \u041f\u0440\u043e\u0435\u043a\u0442 \u0441\u0445\u043e\u0436 \u0441 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u043e\u0439 Node.js \u0438, \u043f\u043e\u0434\u043e\u0431\u043d\u043e \u0435\u043c\u0443, [&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-102260","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 JavaScript-\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Deno 1.16, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \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 (\u0431\u0435\u0437 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