{"id":81559,"date":"2020-05-14T19:42:16","date_gmt":"2020-05-14T17:42:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/avtor-node-js-predstavil-zashhishhyonnuyu-javascript-platformu-deno-1-0"},"modified":"2020-05-14T19:42:16","modified_gmt":"2020-05-14T17:42:16","slug":"avtor-node-js-predstavil-zashhishhyonnuyu-javascript-platformu-deno-1-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/avtor-node-js-predstavil-zashhishhyonnuyu-javascript-platformu-deno-1-0","title":{"rendered":"Node.js autor esitles turvalist JavaScripti platvormi Deno 1.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Kaks aastat arendust\u00f6\u00f6d on n\u00fc\u00fcd l\u00f5ppenud <noindex><a rel=\"nofollow\" href=\"https:\/\/deno.land\/v1\">esitatud<\/a><\/noindex> esimene m\u00e4rkimisv\u00e4\u00e4rne v\u00e4ljalase <noindex><a rel=\"nofollow\" href=\"https:\/\/deno.land\/\">Deno 1.0<\/a><\/noindex>, platvorm eraldiseisvate rakenduste k\u00e4itamiseks JavaScripti ja TypeScripti keeltes, mida saab kasutada serveripoolsete t\u00f6\u00f6tlejate loomiseks. Platvormi arendab Ryan Dahl (<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Ryan_Dahl\">Ryan Dahl<\/a><\/noindex>), Node.js looja. Nagu Node.js, kasutab ka Deno JavaScripti mootorit <noindex><a rel=\"nofollow\" href=\"https:\/\/v8.dev\/\">V8<\/a><\/noindex>, mida kasutatakse ka Chromiumi p\u00f5histel brauseritel. Samas ei ole Deno Node.js haru, vaid t\u00e4iesti nullist loodud uus projekt. Projekti kood <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/denoland\/deno\">GNU \u00dcldine Avaliku litsentsi alusel.<\/a><\/noindex> on MIT litsentsi all. Kogumikud <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/denoland\/deno\/releases\/tag\/v1.0.0\">valmistatud<\/a><\/noindex> Linuxi, Windowsi ja macOS-i jaoks.<\/p>\n<p>M\u00e4rkimisv\u00e4\u00e4rne versiooninumber on seotud Deno nimede ruumis API stabiliseerimisega, mis vastutavad rakenduste suhtlemise eest operatsioonis\u00fcsteemiga. Programmi liidesed, mis veel <noindex><a rel=\"nofollow\" href=\"https:\/\/doc.deno.land\/https\/raw.githubusercontent.com\/denoland\/deno\/master\/cli\/js\/lib.deno.unstable.d.ts\">ei ole stabiliseeritud<\/a><\/noindex>,  \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0441\u043a\u0440\u044b\u0442\u044b \u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 &#171;&#8212;unstable&#187;. \u041f\u043e \u043c\u0435\u0440\u0435 \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u043e\u0432\u044b\u0445 \u0432\u0435\u0440\u0441\u0438\u0439 \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0435 API \u043f\u043e\u0441\u0442\u0435\u043f\u0435\u043d\u043d\u043e \u0431\u0443\u0434\u0443\u0442 \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0438\u0442\u044c\u0441\u044f \u0432 \u0440\u0430\u0437\u0440\u044f\u0434 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0445. API \u0432 \u0433\u043b\u043e\u0431\u0430\u043b\u044c\u043d\u043e\u043c \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u0438\u043c\u0451\u043d, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u0439 \u0442\u0430\u043a\u0438\u0435 \u043e\u0431\u0449\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043a\u0430\u043a setTimeout() \u0438 fetch(), \u043f\u043e \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0438\u0431\u043b\u0438\u0436\u0435\u043d \u043a API \u043e\u0431\u044b\u0447\u043d\u044b\u0445 web-\u0431\u0440\u0430\u0443\u0437\u0435\u0440\u043e\u0432 \u0438 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0432 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438 \u0441 Web-\u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430\u043c\u0438 \u0434\u043b\u044f \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u043e\u0432. \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u044b\u0435 Rust API, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u043d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u0432 \u043a\u043e\u0434\u0435 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u0434\u043b\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u043b\u0430\u0433\u0438\u043d\u043e\u0432 \u043a Deno runtime, \u043f\u043e\u043a\u0430 \u043d\u0435 \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u0438 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u044e\u0442 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0442\u044c\u0441\u044f.<\/p>\n<p>Uue JavaScript-platvormi loomise peamised motiivid olid soov k\u00f5rvaldada kontseptuaalsed vead, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.youtube.com\/watch?v=M3BM9TB-8yA\">mille on teinud<\/a><\/noindex> Node.js arhitektuuris, ja pakkuda kasutajatele turvalisemat keskkonda. Turvalisuse suurendamiseks on V8 mootori \u00fcmber kirjutatud Rusti keeles, mis aitab v\u00e4ltida paljusid haavatavusi, mis tulenevad madala taseme m\u00e4luhaldusega, n\u00e4iteks m\u00e4lu vabastamisest p\u00e4rast juurdep\u00e4\u00e4su, nullviidete de-referentseerimisest ja puhverduspiiride \u00fcletamisest. Taotluste t\u00f6\u00f6tlemiseks kasutatakse blokeerimata re\u017eiimi platvormi <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/tokio-rs\/tokio\">Tokio<\/a><\/noindex>, samuti kirjutatud Rusti keeles. Tokio v\u00f5imaldab luua k\u00f5rgtehnoloogilisi s\u00fcndmusp\u00f5hiseid (Event-driven) rakendusi, mis toetavad mitme l\u00f5ime ja as\u00fcnkroonse v\u00f5rgu p\u00e4ringute t\u00f6\u00f6tlemist.<\/p>\n<p>Peamised <noindex><a rel=\"nofollow\" href=\"https:\/\/deno.land\/manual\">omadused<\/a><\/noindex> Deno:\n<\/p>\n<ul>\n<li class=\"l\"> Turvalisuse orientatsioon vaikeseadetes. Failide juurde p\u00e4\u00e4s, v\u00f5rguv\u00f5imalused ja keskkonnamuutujate ale on vaikimisi blokeeritud ning vajavad selgelt lubamist. Vaikesed rakendused k\u00e4ivituvad isoleeritud liivakasti keskkondades ega p\u00e4\u00e4se s\u00fcsteemi funktsioonidele ligi ilma selgete volituste andmiseta;\n<\/li>\n<li class=\"l\"> T\u00fc\u00fcpilise JavaScript'i k\u00f5rval on Deno-l juurdehitatud TypeScript'i tugi. T\u00fc\u00fcpide kontrollimiseks ja JavaScript'i genereerimise jaoks kasutatakse sisseehitatud TypeScript'i kompilaatorit, mis v\u00f5ib p\u00f5hjustada j\u00f5udluse langust v\u00f5rreldes JavaScript'i anal\u00fc\u00fcsiga V8-s. Tulevikus plaanitakse arendada oma TypeScript'i t\u00fc\u00fcbikontrolli s\u00fcsteemi, mis t\u00f5stab j\u00f5udluse oluliselt k\u00f5rgemale.\n<\/li>\n<li class=\"l\"> Runtime on tuleb \u00fches iseseisvas k\u00e4ivitatavas failis (&#171;deno&#187;). Deno abil rakenduste k\u00e4ivitamiseks piisab <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/denoland\/deno\/releases\">alla laadida<\/a><\/noindex> oma platvormile \u00fchte k\u00e4ivitatavat faili, mille suurus on umbes 20 MB, mis ei oma v\u00e4liseid s\u00f5ltuvusi ja ei n\u00f5ua mingisugust erilist s\u00fcsteemi installeerimist. Samas ei ole Deno monoliitne rakendus, vaid see koosneb Rustis kirjutatud crate-pakettide kogumist (<noindex><a rel=\"nofollow\" href=\"https:\/\/crates.io\/crates\/deno_core\">deno_core<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/crates.io\/crates\/rusty_v8\">rusty_v8<\/a><\/noindex>), mida saab kasutada eraldi.\n<\/li>\n<li class=\"l\"> Programmi k\u00e4ivitamiseks ja moodulite laadimiseks saab kasutada URL-aadresse. N\u00e4iteks, et k\u00e4ivitada programmi welcome.js, v\u00f5ib kasutada k\u00e4sku &#171;deno https:\/\/deno.land\/std\/examples\/welcome.js&#187;. V\u00e4liste allikate kood laaditakse ja salvestatakse kohalikku s\u00fcsteemi, kuid ei uuendata automaatselt (uuendamiseks tuleb rakendus k\u00e4ivitada selgelt lipuga &#171;&#8212;reload&#187;);\n<\/li>\n<li class=\"l\"> T\u00f5hus HTTP-p\u00e4ringute t\u00f6\u00f6tlemine rakendustes, platvorm on suunatud k\u00f5rge j\u00f5udlusega v\u00f5rgu rakenduste loomisele;\n<\/li>\n<li class=\"l\"> V\u00f5imalus luua universaalseid veebi rakendusi, mis saavad t\u00f6\u00f6tada nii Deno-s kui ka tavap\u00e4rases veebi brauseris;\n<li class=\"l\"> Olemasolu <noindex><a rel=\"nofollow\" href=\"https:\/\/deno.land\/std\">standardsete moodulite komplekt<\/a><\/noindex>, mille kasutamine ei vaja v\u00e4listele s\u00f5ltuvustele sidumist. Standardkollektsiooni moodulid on l\u00e4binud t\u00e4iendava auditi ja koosk\u00f5lastamise kontrolli.\n<\/li>\n<li class=\"l\"> Lisaks runtime'ile t\u00e4idab Deno platvorm ka paketihalduri rolli ja v\u00f5imaldab koodis moodulite juurde p\u00e4\u00e4semist URL-ide kaudu. N\u00e4iteks mooduli laadimiseks v\u00f5ib koodis m\u00e4rkida &#171;import * as log from &#171;https:\/\/deno.land\/std\/log\/mod.ts&#187;. V\u00e4liste serverite kaudu URL-i kaudu laaditud failid salvestatakse vahem\u00e4llu. Moodulite versioonide sidumine m\u00e4\u00e4ratakse versiooninumbrite n\u00e4idete kaudu URL-is, n\u00e4iteks &#171;https:\/\/unpkg.com\/liltest@0.0.5\/dist\/liltest.js&#187;;\n<\/li>\n<li class=\"l\"> \u0412 \u0441\u043e\u0441\u0442\u0430\u0432 \u0438\u043d\u0442\u0435\u0433\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0438\u043d\u0441\u043f\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0435\u0439 (\u043a\u043e\u043c\u0430\u043d\u0434\u0430 &#171;deno info&#187;)  \u0438 \u0443\u0442\u0438\u043b\u0438\u0442\u0430 \u0434\u043b\u044f \u0444\u043e\u0440\u043c\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043a\u043e\u0434\u0430 (deno fmt);\n<\/li>\n<li class=\"l\"> K\u00f5ik rakenduse skriptid saavad olla \u00fchendatud \u00fcheks JavaScripti failiks.\n<\/li>\n<\/ul>\n<p> Erinevused Node.js-st:\n<\/p>\n<ul>\n<li class=\"l\"> Deno ei kasuta pakihaldurit npm<br \/>\n ja ei seondu hoidlate k\u00fclge; moodulite aadressimine toimub URL-i v\u00f5i failitee kaudu, ja mooduleid saab paigutada igale veebisaidile;\n<\/li>\n<li class=\"l\"> Deno-s ei kasutata &#171;package.json&#187; moodulite m\u00e4\u00e4ratlemiseks;\n<\/li>\n<li class=\"l\"> API erinevused, k\u00f5ik as\u00fcnkroonsed toimingud Deno-s tagastavad promise.\n<\/li>\n<li class=\"l\"> Deno n\u00f5uab, et k\u00f5ik vajalikud \u00f5igused failide, v\u00f5rgu ja keskkonnamuutujite jaoks oleksid selgelt m\u00e4\u00e4ratletud;\n<\/li>\n<li class=\"l\"> K\u00f5ik vead, mis ei ole k\u00e4sitletud, viivad rakenduse t\u00e4itmise l\u00f5petamiseni;\n<\/li>\n<li class=\"l\"> Deno kasutab ECMAScript'i moodulis\u00fcsteemi ja ei toeta require();\n<li class=\"l\"> Deno sisseehitatud HTTP-server on kirjutatud TypeScriptis ja t\u00f6\u00f6tab kohalike TCP-sokkide peal, samas kui Node.js HTTP-server on kirjutatud C-s ja pakub JavaScriptile seotud funktsioone. Deno arendajad keskenduvad TCP-sokete kihi optimeerimisele ja \u00fcldisema liidese pakkumisele. Deno HTTP-server tagab madalama l\u00e4bilaskev\u00f5ime, kuid garanteerib ettearvatavad madalad viivitused. N\u00e4iteks suutis Deno HTTP-serveri p\u00f5hjal loodud lihtne rakendus t\u00f6\u00f6delda 25 tuhat p\u00e4ringut sekundis maksimaalse viivitusega 1,3 millisekundit. Node.js samav\u00e4\u00e4rne rakendus t\u00f6\u00f6tles 34 tuhat p\u00e4ringut sekundis, kuid viivitused k\u00f5ikusid vahemikus 2 kuni 300 millisekundit.\n<li class=\"l\"> Deno ei ole \u00fchilduv Node.js (NPM) pakettidega, vaid areneb iseseisvalt <noindex><a rel=\"nofollow\" href=\"https:\/\/deno.land\/std\/node\/\">kiht<\/a><\/noindex> Node.js standardraamatukogu \u00fchilduvuse nimel, mille edasiarenedes saavad Deno-s k\u00e4ivituda \u00fcha rohkem Node.js jaoks kirjutatud rakendusi.\n<\/li>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52947\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0434\u0432\u0443\u0445 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u043f\u0435\u0440\u0432\u044b\u0439 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a Deno 1.0, \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \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\u0430\u0445 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 \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. \u041f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0443 \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. \u041a\u0430\u043a \u0438 \u0432 Node.js \u0432 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 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430\u0445 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 Chromium. [&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-81559","post","type-post","status-publish","format-standard","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=\"\u041f\u043e\u0441\u043b\u0435 \u0434\u0432\u0443\u0445 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u043f\u0435\u0440\u0432\u044b\u0439 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a Deno 1.0, \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f 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