{"id":40945,"date":"2026-03-02T12:00:38","date_gmt":"2026-03-02T09:00:38","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/cozuldu-darttan-typescripte-kapsamli-bir-gecis-rehberi\/"},"modified":"2026-03-02T12:00:38","modified_gmt":"2026-03-02T09:00:38","slug":"cozuldu-darttan-typescripte-kapsamli-bir-gecis-rehberi","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/cozuldu-darttan-typescripte-kapsamli-bir-gecis-rehberi\/","title":{"rendered":"\u00c7\u00f6z\u00fcld\u00fc: Dart&#8217;tan TypeScript&#8217;e Kapsaml\u0131 Bir Ge\u00e7i\u015f Rehberi"},"content":{"rendered":"<h2>\u00c7\u00f6z\u00fcld\u00fc: Dart&#8217;tan TypeScript&#8217;e Kapsaml\u0131 Bir Ge\u00e7i\u015f Rehberi<\/h2>\n<p>Yaz\u0131l\u0131m geli\u015ftirme d\u00fcnyas\u0131 s\u00fcrekli evrim ge\u00e7irirken, geli\u015ftiricilerin farkl\u0131 diller ve ekosistemler aras\u0131nda ge\u00e7i\u015f yapmas\u0131 ka\u00e7\u0131n\u0131lmaz hale gelebiliyor. Dart, \u00f6zellikle Flutter ile mobil ve web uygulamalar\u0131 geli\u015ftirmede pop\u00fclerli\u011fini art\u0131rsa da, web tabanl\u0131 projelerde ve geni\u015f bir ekosistemde TypeScript&#8217;in g\u00fcc\u00fc ve yayg\u0131nl\u0131\u011f\u0131 g\u00f6z ard\u0131 edilemez. Bu makale, Dart ekosisteminden TypeScript&#8217;e ge\u00e7i\u015f yapmay\u0131 d\u00fc\u015f\u00fcnen veya bu konuda merak duyan geli\u015ftiriciler i\u00e7in kapsaml\u0131 bir rehber sunmaktad\u0131r. Temel farkl\u0131l\u0131klardan kod d\u00f6n\u00fc\u015ft\u00fcrme stratejilerine kadar, bu ge\u00e7i\u015f s\u00fcrecini ad\u0131m ad\u0131m inceleyece\u011fiz.<\/p>\n<h3>Dart ve TypeScript: Temel Farklar ve Benzerlikler<\/h3>\n<p>Dart ve TypeScript, modern, tip g\u00fcvenli ve nesne y\u00f6nelimli programlama dilleri olsalar da, k\u00f6kenleri ve hedefleri itibar\u0131yla baz\u0131 \u00f6nemli farkl\u0131l\u0131klar g\u00f6sterirler. Bu b\u00f6l\u00fcm, iki dil aras\u0131ndaki temel benzerlikleri ve farkl\u0131l\u0131klar\u0131 anlaman\u0131za yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n<h4>Dil Yap\u0131s\u0131 ve S\u00f6zdizimi<\/h4>\n<p>Her iki dil de C-tabanl\u0131 dillerden t\u00fcredi\u011fi i\u00e7in s\u00f6zdizimsel olarak birbirlerine benzerler. S\u00fcsl\u00fc parantezler, noktal\u0131 virg\u00fcller ve temel kontrol ak\u0131\u015f\u0131 yap\u0131lar\u0131 (if\/else, for, while) her iki dilde de tan\u0131d\u0131k gelecektir. Ancak, Dart&#8217;\u0131n daha &#8220;saf&#8221; bir nesne y\u00f6nelimli dil olmas\u0131, her \u015feyin bir nesne olmas\u0131n\u0131 gerektirirken, TypeScript JavaScript&#8217;in \u00fczerine in\u015fa edildi\u011fi i\u00e7in daha esnek bir yap\u0131ya sahiptir.<\/p>\n<h4>Tip Sistemi Kar\u015f\u0131la\u015ft\u0131rmas\u0131<\/h4>\n<p>Dart, null safety&#8217;nin varsay\u0131lan olarak geldi\u011fi g\u00fc\u00e7l\u00fc bir tip sistemine sahiptir. T\u00fcr \u00e7\u0131kar\u0131m\u0131 olduk\u00e7a geli\u015fmi\u015ftir ve derleme zaman\u0131nda bir\u00e7ok hatay\u0131 yakalar. TypeScript de g\u00fc\u00e7l\u00fc bir tip sistemine sahiptir ve JavaScript&#8217;e iste\u011fe ba\u011fl\u0131 statik tipler ekler. Aray\u00fczler, t\u00fcr birle\u015fimleri (union types) ve kesi\u015fim t\u00fcrleri (intersection types) gibi geli\u015fmi\u015f tip \u00f6zellikleri sunar. Dart&#8217;taki <code>dynamic<\/code> anahtar kelimesi, TypeScript&#8217;teki <code>any<\/code> anahtar kelimesine benzer bir esneklik sa\u011flar ancak her ikisi de dikkatli kullan\u0131lmal\u0131d\u0131r.<\/p>\n<h4>\u00c7al\u0131\u015fma Zaman\u0131 Ortamlar\u0131 ve Derleme<\/h4>\n<p>Dart, hem JIT (Just-In-Time) hem de AOT (Ahead-Of-Time) derlemeyi destekler. Flutter uygulamalar\u0131 AOT derlenirken, web i\u00e7in JavaScript&#8217;e derlenir. TypeScript ise her zaman JavaScript&#8217;e derlenir ve bu JavaScript kodu Node.js gibi bir \u00e7al\u0131\u015fma zaman\u0131 ortam\u0131nda veya taray\u0131c\u0131da \u00e7al\u0131\u015f\u0131r. Bu, TypeScript&#8217;in geni\u015f JavaScript ekosistemine do\u011frudan eri\u015febilmesi anlam\u0131na gelir.<\/p>\n<h4>Ekosistem ve Ara\u00e7lar<\/h4>\n<p>Dart&#8217;\u0131n ekosistemi b\u00fcy\u00fck \u00f6l\u00e7\u00fcde Flutter etraf\u0131nda yo\u011funla\u015fm\u0131\u015ft\u0131r. Pub.dev, Dart paketlerinin merkezi deposudur. TypeScript ise Node.js, npm\/yarn ve geni\u015f JavaScript k\u00fct\u00fcphane ekosisteminden beslenir. Web geli\u015ftirme, sunucu taraf\u0131 uygulamalar (Node.js ile), mobil (React Native ile) ve masa\u00fcst\u00fc (Electron ile) gibi \u00e7ok \u00e7e\u015fitli alanlarda kullan\u0131l\u0131r. Bu geni\u015f ekosistem, TypeScript&#8217;in en b\u00fcy\u00fck avantajlar\u0131ndan biridir.<\/p>\n<h3>Ge\u00e7i\u015f S\u00fcrecine Ba\u015flamadan \u00d6nce: Haz\u0131rl\u0131k ve Strateji<\/h3>\n<p>Dart&#8217;tan TypeScript&#8217;e ge\u00e7i\u015f, sadece kod s\u00f6zdizimini de\u011fi\u015ftirmekten ibaret de\u011fildir; ayn\u0131 zamanda bir zihniyet de\u011fi\u015fikli\u011fi ve stratejik planlama gerektirir. Ba\u015far\u0131l\u0131 bir ge\u00e7i\u015f i\u00e7in iyi bir haz\u0131rl\u0131k \u015fartt\u0131r.<\/p>\n<h4>Neden Ge\u00e7i\u015f Yap\u0131yorsunuz? Hedefleri Belirleme<\/h4>\n<p>Ge\u00e7i\u015f yapma nedenlerinizi netle\u015ftirmek, s\u00fcrecin do\u011fru bir \u015fekilde y\u00f6netilmesini sa\u011flar. Daha geni\u015f bir i\u015f piyasas\u0131na eri\u015fim, mevcut bir TypeScript projesine entegrasyon, belirli bir k\u00fct\u00fcphane veya \u00e7er\u00e7eveye ge\u00e7i\u015f gibi hedefleriniz olabilir. Bu hedefler, ge\u00e7i\u015f stratejinizi ve \u00f6nceliklerinizi belirlemenize yard\u0131mc\u0131 olacakt\u0131r.<\/p>\n<h4>Mevcut Projeyi Analiz Etme<\/h4>\n<p>Ge\u00e7i\u015f yapmay\u0131 planlad\u0131\u011f\u0131n\u0131z Dart projenizi detayl\u0131 bir \u015fekilde analiz edin. Projenin b\u00fcy\u00fckl\u00fc\u011f\u00fc, ba\u011f\u0131ml\u0131l\u0131klar\u0131, test kapsam\u0131 ve mimarisi, ge\u00e7i\u015fin karma\u015f\u0131kl\u0131\u011f\u0131n\u0131 belirleyecektir. \u00d6zellikle platforma \u00f6zg\u00fc (\u00f6rne\u011fin Flutter widget&#8217;lar\u0131) veya Dart&#8217;a \u00f6zg\u00fc API&#8217;lerin yo\u011fun oldu\u011fu k\u0131s\u0131mlar, daha fazla manuel m\u00fcdahale gerektirecektir.<\/p>\n<h4>Gerekli Ara\u00e7lar\u0131 Kurulumu<\/h4>\n<p>TypeScript geli\u015ftirmeye ba\u015flamak i\u00e7in baz\u0131 temel ara\u00e7lara ihtiyac\u0131n\u0131z olacak:<\/p>\n<ul>\n<li><b>Node.js ve npm\/yarn:<\/b> JavaScript \u00e7al\u0131\u015fma zaman\u0131 ve paket y\u00f6neticisi.<\/li>\n<li><b>TypeScript Derleyici:<\/b> <code>npm install -g typescript<\/code> ile global olarak kurabilirsiniz.<\/li>\n<li><b>IDE:<\/b> Visual Studio Code, TypeScript i\u00e7in m\u00fckemmel destek sunar.<\/li>\n<li><b>Git:<\/b> Kod versiyon kontrol\u00fc i\u00e7in vazge\u00e7ilmezdir.<\/li>\n<\/ul>\n<h4>K\u00fc\u00e7\u00fck Bir Pilot Proje ile Ba\u015flama<\/h4>\n<p>T\u00fcm projeyi bir kerede d\u00f6n\u00fc\u015ft\u00fcrmeye \u00e7al\u0131\u015fmak yerine, k\u00fc\u00e7\u00fck, izole bir mod\u00fcl\u00fc veya yeni bir \u00f6zelli\u011fi TypeScript&#8217;te geli\u015ftirmeye ba\u015flay\u0131n. Bu, yeni dilin inceliklerini \u00f6\u011frenmenize, ara\u00e7lar\u0131 kurman\u0131za ve olas\u0131 sorunlar\u0131 b\u00fcy\u00fck bir risk almadan deneyimlemenize olanak tan\u0131r.<\/p>\n<h3>Temel Dil Yap\u0131lar\u0131n\u0131n D\u00f6n\u00fc\u015ft\u00fcr\u00fclmesi<\/h3>\n<p>Dart ve TypeScript aras\u0131ndaki temel dil yap\u0131lar\u0131n\u0131n nas\u0131l d\u00f6n\u00fc\u015ft\u00fcr\u00fclece\u011fini anlamak, ge\u00e7i\u015fin en \u00f6nemli ad\u0131mlar\u0131ndan biridir. \u0130\u015fte baz\u0131 yayg\u0131n d\u00f6n\u00fc\u015f\u00fcmler:<\/p>\n<h4>De\u011fi\u015fkenler, Sabitler ve T\u00fcr Bildirimleri<\/h4>\n<p>Dart&#8217;taki <code>var<\/code>, <code>final<\/code> ve <code>const<\/code> anahtar kelimeleri, TypeScript&#8217;teki <code>let<\/code> ve <code>const<\/code> ile benzer i\u015flevlere sahiptir. T\u00fcr bildirimleri her iki dilde de benzerdir, ancak TypeScript&#8217;in daha geni\u015f t\u00fcr se\u00e7enekleri vard\u0131r.<\/p>\n<pre><code class=\"language-dart\">\/\/ Dart\nString name = \"Alice\";\nfinal int age = 30;\nconst double pi = 3.14;\nList<String> names = [\"Alice\", \"Bob\"];<\/pre>\n<p><\/code><\/p>\n<pre><code class=\"language-typescript\">\/\/ TypeScript\nlet name: string = \"Alice\";\nconst age: number = 30;\nconst pi: number = 3.14;\nconst names: string[] = [\"Alice\", \"Bob\"];<\/pre>\n<p><\/code><\/p>\n<h4>Fonksiyonlar ve Metotlar<\/h4>\n<p>Fonksiyon tan\u0131mlamalar\u0131 ve \u00e7a\u011fr\u0131lar\u0131 b\u00fcy\u00fck \u00f6l\u00e7\u00fcde benzerdir. TypeScript, fonksiyon parametreleri ve d\u00f6n\u00fc\u015f de\u011ferleri i\u00e7in daha esnek tip belirtme se\u00e7enekleri sunar.<\/p>\n<pre><code class=\"language-dart\">\/\/ Dart\nString greet(String name, {String? greeting}) {\n  return \"${greeting ?? 'Hello'}, $name!\";\n}<\/pre>\n<p><\/code><\/p>\n<pre><code class=\"language-typescript\">\/\/ TypeScript\nfunction greet(name: string, greeting?: string): string {\n  return <code>${greeting ?? 'Hello'}, ${name}!<\/code>;\n}<\/pre>\n<p><\/code><\/p>\n<h4>S\u0131n\u0131flar, Aray\u00fczler ve Miras Alma<\/h4>\n<p>Dart ve TypeScript, s\u0131n\u0131flar ve miras alma konusunda benzer prensiplere sahiptir. TypeScript'teki <code>interface<\/code> kavram\u0131, Dart'taki soyut s\u0131n\u0131flar veya <code>implements<\/code> anahtar kelimesi ile bir \u00f6l\u00e7\u00fcde e\u015fle\u015ftirilebilir. TypeScript'te <code>implements<\/code> anahtar kelimesi, bir s\u0131n\u0131f\u0131n bir aray\u00fcz\u00fc uygulad\u0131\u011f\u0131n\u0131 belirtmek i\u00e7in kullan\u0131l\u0131r.<\/p>\n<pre><code class=\"language-dart\">\/\/ Dart\nabstract class Shape {\n  double getArea();\n}\n\nclass Circle implements Shape {\n  double radius;\n  Circle(this.radius);\n  @override\n  double getArea() => 3.14 * radius * radius;\n}<\/pre>\n<p><\/code><\/p>\n<pre><code class=\"language-typescript\">\/\/ TypeScript\ninterface Shape {\n  getArea(): number;\n}\n\nclass Circle implements Shape {\n  radius: number;\n  constructor(radius: number) {\n    this.radius = radius;\n  }\n  getArea(): number {\n    return Math.PI * this.radius * this.radius;\n  }\n}<\/pre>\n<p><\/code><\/p>\n<h4>Asenkron Programlama (Future\/async\/await vs. Promise\/async\/await)<\/h4>\n<p>Her iki dil de asenkron i\u015flemleri y\u00f6netmek i\u00e7in <code>async<\/code> ve <code>await<\/code> anahtar kelimelerini kullan\u0131r. Dart'ta <code>Future<\/code>, TypeScript'te ise <code>Promise<\/code> asenkron i\u015flemlerin temelini olu\u015fturur.<\/p>\n<pre><code class=\"language-dart\">\/\/ Dart\nFuture<String> fetchData() async {\n  await Future.delayed(Duration(seconds: 1));\n  return \"Data from Dart\";\n}<\/pre>\n<p><\/code><\/p>\n<pre><code class=\"language-typescript\">\/\/ TypeScript\nasync function fetchData(): Promise<string> {\n  await new Promise(resolve => setTimeout(resolve, 1000));\n  return \"Data from TypeScript\";\n}<\/pre>\n<p><\/code><\/p>\n<h3>Mod\u00fcl Y\u00f6netimi ve \u0130\u00e7e Aktarma Stratejileri<\/h3>\n<p>Mod\u00fcl y\u00f6netimi, b\u00fcy\u00fck projelerde kodun d\u00fczenli ve yeniden kullan\u0131labilir olmas\u0131n\u0131 sa\u011flayan kritik bir unsurdur. Dart ve TypeScript'in bu konudaki yakla\u015f\u0131mlar\u0131 benzerlik g\u00f6sterse de, baz\u0131 \u00f6nemli farklar vard\u0131r.<\/p>\n<h4>Dart'taki <code>import<\/code> ve <code>export<\/code> Yap\u0131lar\u0131<\/h4>\n<p>Dart'ta, <code>import<\/code> anahtar kelimesi bir k\u00fct\u00fcphaneyi veya ba\u015fka bir dosyay\u0131 i\u00e7e aktarmak i\u00e7in kullan\u0131l\u0131rken, <code>export<\/code> anahtar kelimesi bir k\u00fct\u00fcphaneden d\u0131\u015fa aktar\u0131lacak \u00fcyeleri belirtir. <code>part<\/code> ve <code>part of<\/code> direktifleri, bir k\u00fct\u00fcphaneyi birden fazla dosyaya b\u00f6lmek i\u00e7in kullan\u0131l\u0131r.<\/p>\n<h4>TypeScript'teki ES Mod\u00fclleri (<code>import<\/code>\/<code>export<\/code>)<\/h4>\n<p>TypeScript, JavaScript'in ES mod\u00fcl standard\u0131n\u0131 (<code>import<\/code> ve <code>export<\/code>) benimser. Bu, dosyalar aras\u0131nda ba\u011f\u0131ml\u0131l\u0131klar\u0131 y\u00f6netmek i\u00e7in yayg\u0131n ve standart bir yoldur. \u0130simli (<code>named<\/code>) ve varsay\u0131lan (<code>default<\/code>) d\u0131\u015fa aktar\u0131mlar mevcuttur.<\/p>\n<pre><code class=\"language-typescript\">\/\/ myModule.ts\nexport const PI = 3.14;\nexport function add(a: number, b: number): number {\n  return a + b;\n}\nexport default class Calculator { \/* ... *\/ }\n\n\/\/ main.ts\nimport { PI, add } from '.\/myModule';\nimport MyCalculator from '.\/myModule';<\/pre>\n<p><\/code><\/p>\n<h4>Ortak Mod\u00fcllerin Y\u00f6netimi<\/h4>\n<p>Ge\u00e7i\u015f s\u0131ras\u0131nda, Dart'ta kulland\u0131\u011f\u0131n\u0131z paketlerin TypeScript'te kar\u015f\u0131l\u0131klar\u0131n\u0131 bulman\u0131z veya kendiniz yazman\u0131z gerekebilir. \u00d6zellikle util fonksiyonlar\u0131 veya veri modelleri gibi ortak kodlar\u0131 ayr\u0131 bir \"shared\" veya \"common\" mod\u00fcl\u00fcnde toplayarak her iki dilde de kullan\u0131labilecek \u015fekilde d\u00f6n\u00fc\u015ft\u00fcrmek iyi bir stratejidir. Bu, kademeli bir ge\u00e7i\u015fe olanak tan\u0131r.<\/p>\n<h3>Veri Yap\u0131lar\u0131 ve Koleksiyonlar\u0131n E\u015fle\u015ftirilmesi<\/h3>\n<p>Her iki dil de yayg\u0131n veri yap\u0131lar\u0131n\u0131 ve koleksiyonlar\u0131 destekler, ancak isimleri ve baz\u0131 davran\u0131\u015flar\u0131 farkl\u0131l\u0131k g\u00f6sterebilir.<\/p>\n<h4>Listeler, Diziler ve Setler<\/h4>\n<p>Dart'taki <code>List<\/code> do\u011frudan TypeScript'teki <code>Array<\/code>'e kar\u015f\u0131l\u0131k gelir. Her ikisi de indeks tabanl\u0131 eri\u015fim ve \u00e7e\u015fitli metotlar sunar. Dart'taki <code>Set<\/code> ise TypeScript'teki <code>Set<\/code> objesiyle e\u015fle\u015fir.<\/p>\n<pre><code class=\"language-dart\">\/\/ Dart List\nList<int> numbers = [1, 2, 3];\nnumbers.add(4);\n\n\/\/ Dart Set\nSet<String> uniqueNames = {\"Alice\", \"Bob\"};\nuniqueNames.add(\"Alice\"); \/\/ Eklenmez<\/pre>\n<p><\/code><\/p>\n<pre><code class=\"language-typescript\">\/\/ TypeScript Array\nconst numbers: number[] = [1, 2, 3];\nnumbers.push(4);\n\n\/\/ TypeScript Set\nconst uniqueNames: Set<string> = new Set([\"Alice\", \"Bob\"]);\nuniqueNames.add(\"Alice\"); \/\/ Eklenmez<\/pre>\n<p><\/code><\/p>\n<h4>Map'ler ve Nesneler<\/h4>\n<p>Dart'taki <code>Map<\/code> veri yap\u0131s\u0131, TypeScript'teki <code>Map<\/code> objesi veya d\u00fcz JavaScript nesneleri (<code>{}<\/code>) ile e\u015fle\u015ftirilebilir. TypeScript'teki nesneler genellikle <code>interface<\/code> veya <code>type<\/code> tan\u0131mlamalar\u0131yla daha g\u00fc\u00e7l\u00fc bir \u015fekilde tiplendirilir.<\/p>\n<pre><code class=\"language-dart\">\/\/ Dart Map\nMap<String, dynamic> user = {\n  \"name\": \"Alice\",\n  \"age\": 30,\n};<\/pre>\n<p><\/code><\/p>\n<pre><code class=\"language-typescript\">\/\/ TypeScript Object (Interface ile)\ninterface User {\n  name: string;\n  age: number;\n  email?: string; \/\/ Opsiyonel alan\n}\n\nconst user: User = {\n  name: \"Alice\",\n  age: 30,\n};\n\n\/\/ TypeScript Map\nconst userMap: Map<string, any> = new Map([\n  [\"name\", \"Alice\"],\n  [\"age\", 30]\n]);<\/pre>\n<p><\/code><\/p>\n<h4>Enum'lar ve Sabitler<\/h4>\n<p>Dart'taki <code>enum<\/code> yap\u0131lar\u0131, TypeScript'te de benzer \u015fekilde <code>enum<\/code> anahtar kelimesiyle tan\u0131mlan\u0131r. Her iki dilde de sabit de\u011fer k\u00fcmelerini temsil etmek i\u00e7in kullan\u0131l\u0131rlar.<\/p>\n<pre><code class=\"language-dart\">\/\/ Dart Enum\nenum Status { pending, approved, rejected }\nStatus currentStatus = Status.pending;<\/pre>\n<p><\/code><\/p>\n<pre><code class=\"language-typescript\">\/\/ TypeScript Enum\nenum Status { Pending, Approved, Rejected }\nconst currentStatus: Status = Status.Pending;<\/pre>\n<p><\/code><\/p>\n<h3>Hata Y\u00f6netimi ve \u0130stisnalar<\/h3>\n<p>Uygulamalarda beklenmedik durumlar\u0131 ele almak i\u00e7in hata y\u00f6netimi mekanizmalar\u0131 hayati \u00f6neme sahiptir. Dart ve TypeScript bu konuda benzer yakla\u015f\u0131mlar sergiler.<\/p>\n<h4>Dart'taki <code>try-on-catch-finally<\/code><\/h4>\n<p>Dart, istisnalar\u0131 yakalamak i\u00e7in <code>try<\/code>, <code>on<\/code>, <code>catch<\/code> ve <code>finally<\/code> bloklar\u0131n\u0131 kullan\u0131r. <code>on<\/code> anahtar kelimesi belirli istisna t\u00fcrlerini yakalamak i\u00e7in kullan\u0131l\u0131rken, <code>catch<\/code> t\u00fcm istisnalar\u0131 yakalar ve istisna objesine eri\u015fim sa\u011flar.<\/p>\n<pre><code class=\"language-dart\">\/\/ Dart\ntry {\n  throw FormatException(\"Ge\u00e7ersiz format!\");\n} on FormatException catch (e) {\n  print(\"Format Hatas\u0131: ${e.message}\");\n} catch (e) {\n  print(\"Bilinmeyen Hata: $e\");\n} finally {\n  print(\"\u0130\u015flem tamamland\u0131.\");\n}<\/pre>\n<p><\/code><\/p>\n<h4>TypeScript'teki <code>try-catch-finally<\/code><\/h4>\n<p>TypeScript (ve temelindeki JavaScript), istisnalar\u0131 y\u00f6netmek i\u00e7in <code>try<\/code>, <code>catch<\/code> ve <code>finally<\/code> bloklar\u0131n\u0131 kullan\u0131r. <code>catch<\/code> blo\u011fu, yakalanan hataya eri\u015fim sa\u011flar. TypeScript 4.0 ve sonras\u0131 ile <code>catch<\/code> blo\u011fundaki hata de\u011fi\u015fkeninin tipi <code>unknown<\/code> olarak belirlenir ve daha g\u00fcvenli bir \u015fekilde ele al\u0131nmas\u0131 \u00f6nerilir.<\/p>\n<pre><code class=\"language-typescript\">\/\/ TypeScript\ntry {\n  throw new Error(\"Bir hata olu\u015ftu!\");\n} catch (error: unknown) {\n  if (error instanceof Error) {\n    console.error(\"Hata: \" + error.message);\n  } else {\n    console.error(\"Bilinmeyen bir hata olu\u015ftu.\");\n  }\n} finally {\n  console.log(\"\u0130\u015flem tamamland\u0131.\");\n}<\/pre>\n<p><\/code><\/p>\n<h4>\u00d6zel Hata S\u0131n\u0131flar\u0131<\/h4>\n<p>Her iki dilde de \u00f6zel hata s\u0131n\u0131flar\u0131 olu\u015fturarak uygulaman\u0131za \u00f6zg\u00fc hata t\u00fcrlerini tan\u0131mlayabilirsiniz. Bu, hata y\u00f6netimini daha anlaml\u0131 ve okunabilir hale getirir.<\/p>\n<pre><code class=\"language-typescript\">\/\/ TypeScript Custom Error\nclass CustomError extends Error {\n  constructor(message: string) {\n    super(message);\n    this.name = \"CustomError\";\n  }\n}\n\ntry {\n  throw new CustomError(\"Bu \u00f6zel bir hata!\");\n} catch (error: unknown) {\n  if (error instanceof CustomError) {\n    console.error(<code>\u00d6zel Hata: ${error.name} - ${error.message}<\/code>);\n  }\n}<\/pre>\n<p><\/code><\/p>\n<h3>Test ve Hata Ay\u0131klama S\u00fcre\u00e7leri<\/h3>\n<p>Ge\u00e7i\u015f s\u00fcrecinin ba\u015far\u0131l\u0131 olmas\u0131 i\u00e7in test ve hata ay\u0131klama stratejileri b\u00fcy\u00fck \u00f6nem ta\u015f\u0131r. Kodunuzun do\u011fru \u00e7al\u0131\u015ft\u0131\u011f\u0131ndan emin olmak ve olas\u0131 sorunlar\u0131 h\u0131zl\u0131ca tespit etmek kritik bir ad\u0131md\u0131r.<\/p>\n<h4>Test \u00c7er\u00e7evelerinin Kar\u015f\u0131la\u015ft\u0131r\u0131lmas\u0131<\/h4>\n<p>Dart'ta genellikle <code>package:test<\/code> k\u00fct\u00fcphanesi kullan\u0131l\u0131r. Birim testleri, widget testleri (Flutter i\u00e7in) ve entegrasyon testleri bu \u00e7er\u00e7eve ile yaz\u0131l\u0131r. TypeScript ekosisteminde ise Jest, Mocha, Vitest gibi pop\u00fcler test \u00e7er\u00e7eveleri bulunur. Jest, genellikle kolay kurulumu ve kapsaml\u0131 \u00f6zellikleri nedeniyle tercih edilir.<\/p>\n<p><strong>Dart Test \u00d6rne\u011fi:<\/strong><\/p>\n<pre><code class=\"language-dart\">\/\/ test\/my_calculator_test.dart\nimport 'package:test\/test.dart';\nimport '..\/lib\/my_calculator.dart';\n\nvoid main() {\n  group('Calculator', () {\n    test('adds two numbers', () {\n      expect(add(1, 2), 3);\n    });\n  });\n}<\/pre>\n<p><\/code><\/p>\n<p><strong>TypeScript Test \u00d6rne\u011fi (Jest ile):<\/strong><\/p>\n<pre><code class=\"language-typescript\">\/\/ src\/__tests__\/myCalculator.test.ts\nimport { add } from '..\/myCalculator';\n\ndescribe('Calculator', () => {\n  it('adds two numbers', () => {\n    expect(add(1, 2)).toBe(3);\n  });\n});<\/pre>\n<p><\/code><\/p>\n<h4>Hata Ay\u0131klama Ortamlar\u0131<\/h4>\n<p>Dart ve Flutter projeleri i\u00e7in Visual Studio Code'un entegre hata ay\u0131klay\u0131c\u0131s\u0131 veya Android Studio\/IntelliJ IDEA gibi IDE'ler g\u00fc\u00e7l\u00fc hata ay\u0131klama yetenekleri sunar. TypeScript projeleri i\u00e7in de Visual Studio Code, Node.js veya taray\u0131c\u0131 tabanl\u0131 uygulamalar i\u00e7in m\u00fckemmel hata ay\u0131klama ara\u00e7lar\u0131na sahiptir. Breakpoint'ler, ad\u0131m ad\u0131m kod \u00e7al\u0131\u015ft\u0131rma, de\u011fi\u015fken inceleme gibi \u00f6zellikler her iki ortamda da mevcuttur.<\/p>\n<h4>Ge\u00e7i\u015f Sonras\u0131 Test Stratejileri<\/h4>\n<p>Dart'tan TypeScript'e ge\u00e7erken, mevcut testlerinizi de yeni dile uyarlaman\u0131z gerekecektir. M\u00fcmk\u00fcnse, d\u00f6n\u00fc\u015ft\u00fcrd\u00fc\u011f\u00fcn\u00fcz her mod\u00fcl veya bile\u015fen i\u00e7in TypeScript'te yeni testler yazarak veya mevcut testleri d\u00f6n\u00fc\u015ft\u00fcrerek kodunuzun hala beklendi\u011fi gibi \u00e7al\u0131\u015ft\u0131\u011f\u0131ndan emin olun. Kademeli bir ge\u00e7i\u015f yap\u0131yorsan\u0131z, her iki dilde yaz\u0131lm\u0131\u015f testlerin ayn\u0131 anda \u00e7al\u0131\u015fabilece\u011fi bir test ortam\u0131 kurmak faydal\u0131 olabilir.<\/p>\n<h3>Sonu\u00e7<\/h3>\n<p>Dart'tan TypeScript'e ge\u00e7i\u015f, ba\u015flang\u0131\u00e7ta g\u00f6z korkutucu g\u00f6r\u00fcnse de, iki dil aras\u0131ndaki benzerlikler ve modern ara\u00e7lar\u0131n deste\u011fi sayesinde y\u00f6netilebilir bir s\u00fcre\u00e7tir. Bu ge\u00e7i\u015f, size daha geni\u015f bir geli\u015ftirici toplulu\u011funa, zengin bir k\u00fct\u00fcphane ekosistemine ve farkl\u0131 proje t\u00fcrlerinde daha fazla esnekli\u011fe eri\u015fim sa\u011flayabilir. Unutmay\u0131n ki bu bir maraton, sprint de\u011fil; sab\u0131r, planlama ve ad\u0131m ad\u0131m ilerleme ile ba\u015far\u0131l\u0131 bir d\u00f6n\u00fc\u015f\u00fcm ger\u00e7ekle\u015ftirebilirsiniz. Yeni bir dil \u00f6\u011frenmek ve farkl\u0131 bir ekosisteme adapte olmak, geli\u015ftirici olarak yeteneklerinizi geni\u015fletecek ve kariyerinize de\u011ferli katk\u0131lar sa\u011flayacakt\u0131r.<\/p>\n<h3>SSS (S\u0131k Sorulan Sorular)<\/h3>\n<h4>Dart'tan TypeScript'e ge\u00e7i\u015f ne kadar s\u00fcrer?<\/h4>\n<p>Bu, projenin b\u00fcy\u00fckl\u00fc\u011f\u00fcne, karma\u015f\u0131kl\u0131\u011f\u0131na, ekibin deneyimine ve ge\u00e7i\u015f stratejisine ba\u011fl\u0131d\u0131r. K\u00fc\u00e7\u00fck bir proje birka\u00e7 hafta s\u00fcrebilirken, b\u00fcy\u00fck ve karma\u015f\u0131k bir proje aylar s\u00fcrebilir. Kademeli ge\u00e7i\u015fler genellikle daha az kesinti ile daha uzun s\u00fcrer.<\/p>\n<h4>Hangi durumlarda ge\u00e7i\u015f yapmal\u0131y\u0131m?<\/h4>\n<p>E\u011fer mevcut Dart projeniz web tabanl\u0131ysa ve JavaScript\/TypeScript ekosistemindeki k\u00fct\u00fcphanelerden veya \u00e7er\u00e7evelerden (\u00f6rne\u011fin React, Angular, Vue) faydalanmak istiyorsan\u0131z, daha geni\u015f bir i\u015f piyasas\u0131na a\u00e7\u0131lmak istiyorsan\u0131z veya ekibinizde zaten TypeScript uzmanl\u0131\u011f\u0131 varsa ge\u00e7i\u015f yapmak mant\u0131kl\u0131 olabilir.<\/p>\n<h4>Var olan Dart kodumu otomatik d\u00f6n\u00fc\u015ft\u00fcrecek bir ara\u00e7 var m\u0131?<\/h4>\n<p>Tamamen otomatik ve hatas\u0131z bir d\u00f6n\u00fc\u015ft\u00fcrme arac\u0131 ne yaz\u0131k ki bulunmamaktad\u0131r. Her iki dilin kendine \u00f6zg\u00fc yap\u0131lar\u0131 ve ekosistem farkl\u0131l\u0131klar\u0131 nedeniyle, \u00e7o\u011fu durumda manuel m\u00fcdahale ve refactoring gereklidir. Ancak, temel s\u00f6zdizimi d\u00f6n\u00fc\u015ft\u00fcrme i\u00e7in baz\u0131 deneysel ara\u00e7lar veya IDE eklentileri bulunabilir, ancak bunlar genellikle ba\u015flang\u0131\u00e7 noktas\u0131 olarak hizmet eder.<\/p>\n<h4>TypeScript'in performans\u0131 Dart'a g\u00f6re nas\u0131l?<\/h4>\n<p>Performans, genellikle derlenen JavaScript kodunun kalitesine ve \u00e7al\u0131\u015fma zaman\u0131 ortam\u0131na (taray\u0131c\u0131, Node.js) ba\u011fl\u0131d\u0131r. Dart, \u00f6zellikle Flutter ile AOT derleme sayesinde mobil platformlarda \u00e7ok y\u00fcksek performans sunabilir. Web'de ise her iki dil de JavaScript'e derlendi\u011fi i\u00e7in, performans farklar\u0131 genellikle kullan\u0131lan k\u00fct\u00fcphanelere, optimizasyonlara ve kod kalitesine ba\u011fl\u0131d\u0131r.<\/p>\n<h4>Flutter projem varsa ne yapmal\u0131y\u0131m?<\/h4>\n<p>E\u011fer projeniz a\u011f\u0131rl\u0131kl\u0131 olarak Flutter ise ve mobil odakl\u0131ysa, Dart'ta kalmak genellikle en iyi se\u00e7enektir. Flutter'\u0131n g\u00fc\u00e7l\u00fc widget'lar\u0131 ve Dart'\u0131n optimizasyonlar\u0131 mobil geli\u015ftirme i\u00e7in idealdir. Ancak, Flutter projenizin bir par\u00e7as\u0131 olarak web tabanl\u0131 bir y\u00f6netici paneli veya API'si geli\u015ftiriyorsan\u0131z, bu k\u0131s\u0131mlar\u0131 TypeScript ile yazmay\u0131 d\u00fc\u015f\u00fcnebilirsiniz.<\/p>\n","protected":false},"excerpt":{"rendered":"\u00c7\u00f6z\u00fcld\u00fc: Dart&#8217;tan TypeScript&#8217;e Kapsaml\u0131 Bir Ge\u00e7i\u015f Rehberi Yaz\u0131l\u0131m geli\u015ftirme d\u00fcnyas\u0131 s\u00fcrekli evrim ge\u00e7irirken, geli\u015ftiricilerin farkl\u0131 diller ve ekosistemler aras\u0131nda ge\u00e7i\u015f yapmas\u0131 ka\u00e7\u0131n\u0131lmaz hale gelebiliyor.","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-40945","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - 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