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<!DOCTYPE html>
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<li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#general">General</a>
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<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-is-there-a-specification-for-dart">Q. Is there a specification for Dart?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-are-you-taking-input-on-changes-to-dart">Q. How are you taking input on changes to Dart?</a></li>
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<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-isnt-dart-a-lot-like-java">Q. Isn’t Dart a lot like Java?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-does-dart-relate-to-go">Q. How does Dart relate to Go?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-why-isnt-dart-more-like-haskell--smalltalk--python--scala--other-language">Q. Why isn’t Dart more like Haskell / Smalltalk / Python / Scala / other language?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-why-isnt-dart-syntax-more-exciting">Q. Why isn’t Dart syntax more exciting?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-does-dart-have-reflection-capabilities">Q. Does Dart have reflection capabilities?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-can-dart-add-tuples-pattern-matching-non-nullable-types-partial-evaluation-optional-semicolons-">Q. Can Dart add tuples, pattern matching, non-nullable types, partial evaluation, optional semicolons, …?</a></li>
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<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-is-dart-a-statically-typed-language">Q. Is Dart a statically typed language?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-why-are-generics-covariant">Q. Why are generics covariant?</a></li>
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<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-do-i-use-third-party-code-or-share-code">Q. How do I use third party code, or share code?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-do-i-need-to-use-a-particular-editor-or-ide-to-write-dart-code">Q. Do I need to use a particular editor or IDE to write Dart code?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-can-i-build-an-android-app-with-dart">Q. Can I build an Android app with Dart?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-what-are-some-real-world-production-deployments-of-dart">Q. What are some real-world production deployments of Dart?</a></li>
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<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-can-i-compile-a-dart-program-for-running-in-a-terminal">Q. Can I compile a Dart program for running in a terminal?</a></li>
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<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-what-browsers-do-you-support-as-javascript-compilation-targets">Q. What browsers do you support as JavaScript compilation targets?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-is-dart-supported-by-my-browser">Q. Is Dart supported by my browser?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-do-i-debug-an-app">Q. How do I debug an app?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-what-web-frameworks-can-i-use-with-dart">Q. What web frameworks can I use with Dart?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-will-the-dart-vm-get-into-chrome">Q. Will the Dart VM get into Chrome?</a></li>
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<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-does-dart-code-interoperate-with-javascript-libraries">Q. How does Dart code interoperate with JavaScript libraries?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-i-have-a-large-javascript-codebase-how-can-i-migrate-it-to-dart">Q. I have a large JavaScript codebase. How can I migrate it to Dart?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-does-dart-compare-with-using-the-closure-compiler-on-javascript">Q. How does Dart compare with using the Closure compiler on JavaScript?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-does-dart-compare-with-coffeescript">Q. How does Dart compare with CoffeeScript?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-what-does-google-think-of-typescript">Q. What does Google think of TypeScript?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-i-have-a-large-app-written-in-gwt-how-do-i-port-it-to-dart">Q. I have a large app written in GWT. How do I port it to Dart?</a></li>
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<li class="toc-entry nav-item toc-h2"><a class="nav-link" href="#web-javascript-compilation">Web: JavaScript compilation</a>
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<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-will-any-valid-dart-code-compile-to-javascript-or-are-there-limitations">Q. Will any valid Dart code compile to JavaScript, or are there limitations?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-why-does-dart-have-two-javascript-compilers-dartdevc-and-dart2js">Q. Why does Dart have two JavaScript compilers, dartdevc and dart2js?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-can-dart2js-produce-javascript-that-runs-faster-than-handwritten-javascript">Q. How can dart2js produce JavaScript that runs faster than handwritten JavaScript?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-can-i-write-dart-code-that-compiles-to-performant-javascript">Q. How can I write Dart code that compiles to performant JavaScript?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-why-is-the-code-for-hello-world-so-big-compared-to-the-original-dart-code-after-compilation-to-javascript">Q. Why is the code for “Hello, World” so big, compared to the original Dart code after compilation to JavaScript?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-are-floating-point-numbers-handled-when-compiled-to-javascript">Q. How are floating point numbers handled when compiled to JavaScript?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-are-integers-handled-when-compiled-to-javascript">Q. How are integers handled when compiled to JavaScript?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-how-are-typed-lists-handled-when-compiled-to-javascript">Q. How are typed lists handled when compiled to JavaScript?</a></li>
<li class="toc-entry nav-item toc-h3"><a class="nav-link" href="#q-why-not-compile-dart-to-asmjs-instead-of-javascript">Q. Why not compile Dart to asm.js instead of JavaScript?</a></li>
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<h1>Dart FAQ</h1>
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<li class="toc-entry toc-h2"><a href="#general">General</a>
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<li class="toc-entry toc-h3"><a href="#q-is-there-a-specification-for-dart">Q. Is there a specification for Dart?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-are-you-taking-input-on-changes-to-dart">Q. How are you taking input on changes to Dart?</a></li>
</ul>
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<li class="toc-entry toc-h2"><a href="#language">Language</a>
<ul>
<li class="toc-entry toc-h3"><a href="#q-isnt-dart-a-lot-like-java">Q. Isn’t Dart a lot like Java?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-does-dart-relate-to-go">Q. How does Dart relate to Go?</a></li>
<li class="toc-entry toc-h3"><a href="#q-why-isnt-dart-more-like-haskell--smalltalk--python--scala--other-language">Q. Why isn’t Dart more like Haskell / Smalltalk / Python / Scala / other language?</a></li>
<li class="toc-entry toc-h3"><a href="#q-why-isnt-dart-syntax-more-exciting">Q. Why isn’t Dart syntax more exciting?</a></li>
<li class="toc-entry toc-h3"><a href="#q-does-dart-have-reflection-capabilities">Q. Does Dart have reflection capabilities?</a></li>
<li class="toc-entry toc-h3"><a href="#q-can-dart-add-tuples-pattern-matching-non-nullable-types-partial-evaluation-optional-semicolons-">Q. Can Dart add tuples, pattern matching, non-nullable types, partial evaluation, optional semicolons, …?</a></li>
</ul>
</li>
<li class="toc-entry toc-h2"><a href="#types">Types</a>
<ul>
<li class="toc-entry toc-h3"><a href="#q-is-dart-a-statically-typed-language">Q. Is Dart a statically typed language?</a></li>
<li class="toc-entry toc-h3"><a href="#q-why-are-generics-covariant">Q. Why are generics covariant?</a></li>
</ul>
</li>
<li class="toc-entry toc-h2"><a href="#usage-and-tools">Usage and tools</a>
<ul>
<li class="toc-entry toc-h3"><a href="#q-does-dart-support-json">Q. Does Dart support JSON?</a></li>
<li class="toc-entry toc-h3"><a href="#q-can-dart-run-on-the-server">Q. Can Dart run on the server?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-do-i-use-third-party-code-or-share-code">Q. How do I use third party code, or share code?</a></li>
<li class="toc-entry toc-h3"><a href="#q-do-i-need-to-use-a-particular-editor-or-ide-to-write-dart-code">Q. Do I need to use a particular editor or IDE to write Dart code?</a></li>
<li class="toc-entry toc-h3"><a href="#q-can-i-build-an-android-app-with-dart">Q. Can I build an Android app with Dart?</a></li>
<li class="toc-entry toc-h3"><a href="#q-what-are-some-real-world-production-deployments-of-dart">Q. What are some real-world production deployments of Dart?</a></li>
</ul>
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<li class="toc-entry toc-h2"><a href="#native-execution">Native execution</a>
<ul>
<li class="toc-entry toc-h3"><a href="#q-can-i-compile-dart-code-to-native-code">Q. Can I compile Dart code to native code?</a></li>
<li class="toc-entry toc-h3"><a href="#q-can-i-compile-a-dart-program-for-running-in-a-terminal">Q. Can I compile a Dart program for running in a terminal?</a></li>
</ul>
</li>
<li class="toc-entry toc-h2"><a href="#web-general">Web: general</a>
<ul>
<li class="toc-entry toc-h3"><a href="#q-what-browsers-do-you-support-as-javascript-compilation-targets">Q. What browsers do you support as JavaScript compilation targets?</a></li>
<li class="toc-entry toc-h3"><a href="#q-is-dart-supported-by-my-browser">Q. Is Dart supported by my browser?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-do-i-debug-an-app">Q. How do I debug an app?</a></li>
<li class="toc-entry toc-h3"><a href="#q-what-web-frameworks-can-i-use-with-dart">Q. What web frameworks can I use with Dart?</a></li>
<li class="toc-entry toc-h3"><a href="#q-will-the-dart-vm-get-into-chrome">Q. Will the Dart VM get into Chrome?</a></li>
</ul>
</li>
<li class="toc-entry toc-h2"><a href="#web-javascript-and-other-technologies">Web: JavaScript and other technologies</a>
<ul>
<li class="toc-entry toc-h3"><a href="#q-how-does-dart-code-interoperate-with-javascript-libraries">Q. How does Dart code interoperate with JavaScript libraries?</a></li>
<li class="toc-entry toc-h3"><a href="#q-i-have-a-large-javascript-codebase-how-can-i-migrate-it-to-dart">Q. I have a large JavaScript codebase. How can I migrate it to Dart?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-does-dart-compare-with-using-the-closure-compiler-on-javascript">Q. How does Dart compare with using the Closure compiler on JavaScript?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-does-dart-compare-with-coffeescript">Q. How does Dart compare with CoffeeScript?</a></li>
<li class="toc-entry toc-h3"><a href="#q-what-does-google-think-of-typescript">Q. What does Google think of TypeScript?</a></li>
<li class="toc-entry toc-h3"><a href="#q-i-have-a-large-app-written-in-gwt-how-do-i-port-it-to-dart">Q. I have a large app written in GWT. How do I port it to Dart?</a></li>
</ul>
</li>
<li class="toc-entry toc-h2"><a href="#web-javascript-compilation">Web: JavaScript compilation</a>
<ul>
<li class="toc-entry toc-h3"><a href="#q-will-any-valid-dart-code-compile-to-javascript-or-are-there-limitations">Q. Will any valid Dart code compile to JavaScript, or are there limitations?</a></li>
<li class="toc-entry toc-h3"><a href="#q-why-does-dart-have-two-javascript-compilers-dartdevc-and-dart2js">Q. Why does Dart have two JavaScript compilers, dartdevc and dart2js?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-can-dart2js-produce-javascript-that-runs-faster-than-handwritten-javascript">Q. How can dart2js produce JavaScript that runs faster than handwritten JavaScript?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-can-i-write-dart-code-that-compiles-to-performant-javascript">Q. How can I write Dart code that compiles to performant JavaScript?</a></li>
<li class="toc-entry toc-h3"><a href="#q-why-is-the-code-for-hello-world-so-big-compared-to-the-original-dart-code-after-compilation-to-javascript">Q. Why is the code for “Hello, World” so big, compared to the original Dart code after compilation to JavaScript?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-are-floating-point-numbers-handled-when-compiled-to-javascript">Q. How are floating point numbers handled when compiled to JavaScript?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-are-integers-handled-when-compiled-to-javascript">Q. How are integers handled when compiled to JavaScript?</a></li>
<li class="toc-entry toc-h3"><a href="#q-how-are-typed-lists-handled-when-compiled-to-javascript">Q. How are typed lists handled when compiled to JavaScript?</a></li>
<li class="toc-entry toc-h3"><a href="#q-why-not-compile-dart-to-asmjs-instead-of-javascript">Q. Why not compile Dart to asm.js instead of JavaScript?</a></li>
</ul>
</li>
</ul>
</div>
<p><em>Updated June 2019</em></p>
<p>This page collects some of the top questions we’ve heard from the community
since Dart was open sourced.</p>
<h2 id="general">
<a id="general" class="anchor" href="#general" aria-hidden="true"><span class="octicon octicon-link"></span></a>General</h2>
<h3 id="q-is-there-a-specification-for-dart">
<a id="q-is-there-a-specification-for-dart" class="anchor" href="#q-is-there-a-specification-for-dart" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Is there a specification for Dart?</h3>
<p>Yes. Dart 1 has a formal specification owned by <a href="https://news.dartlang.org/2013/12/ecma-forms-tc52-for-dart-standardization.html">Ecma TC52</a>.</p>
<p>Dart 2.x is currently being specified; the specification is available from the
<a href="/guides/language/spec">Dart language specification</a> page.</p>
<h3 id="q-how-are-you-taking-input-on-changes-to-dart">
<a id="q-how-are-you-taking-input-on-changes-to-dart" class="anchor" href="#q-how-are-you-taking-input-on-changes-to-dart" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. How are you taking input on changes to Dart?</h3>
<p>We listen to feedback and <a href="https://github.com/dart-lang/sdk/issues">issues,</a> and we review patches from contributors.
A contributor with a good track record can become a committer to the repository.
Google engineers will also be working in the public repository, making visible
changes. The project is lucky to have received many external patches and has
welcomed distributed committers.</p>
<hr>
<h2 id="language">
<a id="language" class="anchor" href="#language" aria-hidden="true"><span class="octicon octicon-link"></span></a>Language</h2>
<h3 id="q-isnt-dart-a-lot-like-java">
<a id="q-isnt-dart-a-lot-like-java" class="anchor" href="#q-isnt-dart-a-lot-like-java" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Isn’t Dart a lot like Java?</h3>
<p>Dart has some similarities with Java. See the <a href="https://codelabs.developers.google.com/codelabs/from-java-to-dart/">Intro to Dart for Java
Developers</a>
codelab for examples of some of the differences between Dart and Java.</p>
<h3 id="q-how-does-dart-relate-to-go">
<a id="q-how-does-dart-relate-to-go" class="anchor" href="#q-how-does-dart-relate-to-go" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. How does Dart relate to Go?</h3>
<p>Dart and Go are both language projects started at Google, but they
are independent and have different goals. As a result,
they make different choices, and the languages have very different
natures, even while we all try to learn from each others’ work.</p>
<h3 id="q-why-isnt-dart-more-like-haskell--smalltalk--python--scala--other-language">
<a id="q-why-isnt-dart-more-like-haskell--smalltalk--python--scala--other-language" class="anchor" href="#q-why-isnt-dart-more-like-haskell--smalltalk--python--scala--other-language" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Why isn’t Dart more like Haskell / Smalltalk / Python / Scala / other language?</h3>
<p>Various reasons, depending on the language being asked about.</p>
<p>For languages that are quite different from JavaScript: it’s important for Dart
to compile to efficient JavaScript. Our experience in GWT is that if the source
language is too different from JavaScript, it creates some cases where complex
output code is needed to emulate the source language’s behavior. This can cause
performance to vary in ways that are not transparent to the programmer.</p>
<p>For languages that are compiled to native code: it’s important that Dart
compiles efficiently to machine code, and thus it shares a number of aspects
with other compiled languages.</p>
<p>For languages that are “more dynamic” than Dart: Dart deliberately trades off
some of this arbitrary runtime modification for the goal of better performance
and more productive tools.</p>
<h3 id="q-why-isnt-dart-syntax-more-exciting">
<a id="q-why-isnt-dart-syntax-more-exciting" class="anchor" href="#q-why-isnt-dart-syntax-more-exciting" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Why isn’t Dart syntax more exciting?</h3>
<p>We did throw in some nice syntactic features such as <code class="highlighter-rouge">this.</code> constructor args
and <code class="highlighter-rouge">=></code> for one-line functions, but we’d agree that Dart chooses
familiarity over excitement. One team member’s personal testimonial:
“I wish it had a little more razzle dazzle but I can’t deny that
literally on my first day of writing Dart code, I was productive in it.”</p>
<h3 id="q-does-dart-have-reflection-capabilities">
<a id="q-does-dart-have-reflection-capabilities" class="anchor" href="#q-does-dart-have-reflection-capabilities" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Does Dart have reflection capabilities?</h3>
<p>For servers and command-line scripts, we have reflection support from the
<a href="https://api.dart.dev/stable/dart-mirrors">mirrors API.</a>
There is no support for mirrors when using Dart to write web or
Flutter apps (<a href="https://flutter.dev/faq/#does-flutter-come-with-a-reflectionmirrors-system">more info</a>).</p>
<h3 id="q-can-dart-add-tuples-pattern-matching-non-nullable-types-partial-evaluation-optional-semicolons-">
<a id="q-can-dart-add-tuples-pattern-matching-non-nullable-types-partial-evaluation-optional-semicolons-" class="anchor" href="#q-can-dart-add-tuples-pattern-matching-non-nullable-types-partial-evaluation-optional-semicolons-" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Can Dart add tuples, pattern matching, non-nullable types, partial evaluation, optional semicolons, …?</h3>
<p>Future releases might be able to include (some of) those features, although
we can’t include everything. Some features don’t fit the basic nature of the
language, and some don’t play well with other features. Simplicity is the single
most important gift we can give to future programmers.</p>
<p>Please look at the <a href="https://github.com/dart-lang/language/projects/1">language funnel</a> and
<a href="https://github.com/dart-lang/language/issues">language issues list</a> to see if your request is already there.
If it is, let us know that you care and give it a thumbs up. Otherwise, go ahead
and add a new request issue (see the [language evolution process][languageprocess]
for details). Make a thoughtful argument for your feature. Sample code with and
without your feature is good evidence; a sizeable codebase that shows the need
is even better evidence.</p>
<p>Don’t be surprised if the Dart language team says “no” by default.
It’s far more painful to remove a language feature than to add it, so
Dart is likely to add the most obvious features first, and then revisit the next
tier later. And there simply are more possible language features in the world
that can fit into any single language without making a total hash of it. But
we do very much appreciate suggestions and evidence. We hope you’ll see our
appreciation through careful design choices and fair communication about them.</p>
<hr>
<h2 id="types">
<a id="types" class="anchor" href="#types" aria-hidden="true"><span class="octicon octicon-link"></span></a>Types</h2>
<h3 id="q-is-dart-a-statically-typed-language">
<a id="q-is-dart-a-statically-typed-language" class="anchor" href="#q-is-dart-a-statically-typed-language" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Is Dart a statically typed language?</h3>
<p>Yes, Dart 2 is statically typed. For more information,
read about <a href="/guides/language/sound-dart">Dart’s type system</a>.</p>
<p>With its combination of static and runtime checks, Dart has a sound type system,
which guarantees that an expression of one type cannot produce a value of
another type. No surprises!</p>
<p>Even with type-safe Dart, you can annotate any variable with
<code class="highlighter-rouge">dynamic</code> if you need the flexibility of a dynamic language.
The <code class="highlighter-rouge">dynamic</code> type itself is static, but can contain any type at runtime.
Of course, that removes many of the benefits of a type-safe language
for that variable.</p>
<h3 id="q-why-are-generics-covariant">
<a id="q-why-are-generics-covariant" class="anchor" href="#q-why-are-generics-covariant" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Why are generics covariant?</h3>
<p>Covariant generics fit a common intuition that programmers have, and very often
this intuition is correct, such as in the common “read-only” use of a generic.
Although this intuition isn’t always correct, Dart is erring on the side of
convenience by having covariant generics.</p>
<p>The only other reasonable default variance would be invariance. While having
only invariant generics would definitely prevent more errors, it would also
prevent a lot of valid programs or require conversion every time you have a list
of “apples”, and someone just wants “fruits”.</p>
<p>We are familiar with a variety of ways that languages try to mark or infer
variance. We feel that variance inference systems add too much complexity for
their benefit in Dart.</p>
<p>Again, we’re trying to be pragmatic, and we think the outcome is reasonable.</p>
<hr>
<h2 id="usage-and-tools">
<a id="usage-and-tools" class="anchor" href="#usage-and-tools" aria-hidden="true"><span class="octicon octicon-link"></span></a>Usage and tools</h2>
<h3 id="q-does-dart-support-json">
<a id="q-does-dart-support-json" class="anchor" href="#q-does-dart-support-json" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Does Dart support JSON?</h3>
<p>Yes. See the <a href="https://api.dart.dev/stable/dart-convert/JsonCodec-class.html">JSON</a> converters in the dart:convert library.</p>
<h3 id="q-can-dart-run-on-the-server">
<a id="q-can-dart-run-on-the-server" class="anchor" href="#q-can-dart-run-on-the-server" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Can Dart run on the server?</h3>
<p>Yes. See <a href="https://dart-lang.github.io/server/">Dart on the Server</a> for details.</p>
<h3 id="q-how-do-i-use-third-party-code-or-share-code">
<a id="q-how-do-i-use-third-party-code-or-share-code" class="anchor" href="#q-how-do-i-use-third-party-code-or-share-code" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. How do I use third party code, or share code?</h3>
<p>You can find many packages on the <a href="https://pub.dev">Pub site</a> a service for hosting
packages of Dart code. Use the <code class="highlighter-rouge">pub</code> command to package your code and upload
to the site.</p>
<h3 id="q-do-i-need-to-use-a-particular-editor-or-ide-to-write-dart-code">
<a id="q-do-i-need-to-use-a-particular-editor-or-ide-to-write-dart-code" class="anchor" href="#q-do-i-need-to-use-a-particular-editor-or-ide-to-write-dart-code" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Do I need to use a particular editor or IDE to write Dart code?</h3>
<p>Nope. You can try out Dart code with <a href="https://dartpad.cn">DartPad,</a> and then use your favorite
editor or IDE for development. Some full-featured IDEs such as IntelliJ IDEA,
WebStorm, and Visual Studio Code have Dart plugins. Open source Dart plugins
also exist for a number of editors. For more information, see the <a href="/tools/">Dart tools</a>.</p>
<h3 id="q-can-i-build-an-android-app-with-dart">
<a id="q-can-i-build-an-android-app-with-dart" class="anchor" href="#q-can-i-build-an-android-app-with-dart" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Can I build an Android app with Dart?</h3>
<p>Yes! You can build an Android app that also works on iOS from a single codebase
using <a href="https://flutter.dev">Flutter</a>, which is powered by the Dart platform.</p>
<h3 id="q-what-are-some-real-world-production-deployments-of-dart">
<a id="q-what-are-some-real-world-production-deployments-of-dart" class="anchor" href="#q-what-are-some-real-world-production-deployments-of-dart" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. What are some real-world production deployments of Dart?</h3>
<p>Google AdWords, AdSense, AdMob, and the Google Assistant all use Dart.
A significant portion of Google’s revenue flows through these apps.
Inside or outside of Google, every Flutter app uses Dart.</p>
<hr>
<h2 id="native-execution">
<a id="native-execution" class="anchor" href="#native-execution" aria-hidden="true"><span class="octicon octicon-link"></span></a>Native execution</h2>
<h3 id="q-can-i-compile-dart-code-to-native-code">
<a id="q-can-i-compile-dart-code-to-native-code" class="anchor" href="#q-can-i-compile-dart-code-to-native-code" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Can I compile Dart code to native code?</h3>
<p>Yes. For programs targeting devices (mobile, desktop, server, and more), <a href="/platforms#dart-native-vm-jit-and-aot">Dart
Native</a> includes both a Dart VM with JIT
(just-in-time) compilation and an AOT (ahead-of-time) compiler for producing
machine code.</p>
<p><a href="https://flutter.dev">Flutter</a> is a sample framework that uses Dart’s native compilation capability
to produce fast native apps.</p>
<h3 id="q-can-i-compile-a-dart-program-for-running-in-a-terminal">
<a id="q-can-i-compile-a-dart-program-for-running-in-a-terminal" class="anchor" href="#q-can-i-compile-a-dart-program-for-running-in-a-terminal" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Can I compile a Dart program for running in a terminal?</h3>
<p>Yes. Dart programs can be compiled to native x64 machine code for running in a
Terminal/Command Prompt on desktop operating systems such as Windows, macOS, and
Linux. For more details, see the <a href="/tools/dart2aot">dart2aot</a> documentation.</p>
<hr>
<h2 id="web-general">
<a id="web-general" class="anchor" href="#web-general" aria-hidden="true"><span class="octicon octicon-link"></span></a>Web: general</h2>
<h3 id="q-what-browsers-do-you-support-as-javascript-compilation-targets">
<a id="q-what-browsers-do-you-support-as-javascript-compilation-targets" class="anchor" href="#q-what-browsers-do-you-support-as-javascript-compilation-targets" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. What browsers do you support as JavaScript compilation targets?</h3>
<p>The <em>production</em> compiler (<a href="/tools/dart2js">dart2js</a>) supports Internet Explorer 11
and the last two major releases of the following browsers:</p>
<ul>
<li>Chrome</li>
<li>Edge</li>
<li>Firefox</li>
<li>Safari</li>
</ul>
<p>The <em>development</em> compiler (<a href="/tools/dartdevc">dartdevc</a>) supports only Chrome.</p>
<h3 id="q-is-dart-supported-by-my-browser">
<a id="q-is-dart-supported-by-my-browser" class="anchor" href="#q-is-dart-supported-by-my-browser" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Is Dart supported by my browser?</h3>
<p>Although no production browsers can execute Dart code directly,
all modern browsers can execute Dart code that’s been compiled to JavaScript.</p>
<h3 id="q-how-do-i-debug-an-app">
<a id="q-how-do-i-debug-an-app" class="anchor" href="#q-how-do-i-debug-an-app" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. How do I debug an app?</h3>
<p>For setup details and a walkthrough, see <a href="/web/debugging">Debugging Dart Web Apps</a>.</p>
<p>The <a href="/tools/dart2js#debugging">debugging</a> section of the dart2js documentation
has some tips for specific browsers.</p>
<h3 id="q-what-web-frameworks-can-i-use-with-dart">
<a id="q-what-web-frameworks-can-i-use-with-dart" class="anchor" href="#q-what-web-frameworks-can-i-use-with-dart" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. What web frameworks can I use with Dart?</h3>
<p>You can use the low-level HTML API defined by core libraries such as dart:html,
or you can use a framework such as <a href="https://webdev.dartlang.org/angular">AngularDart</a>.
During Google I/O 2019 we <a href="https://medium.com/flutter-io/bringing-flutter-to-the-web-904de05f0df0">announced</a> a technical preview of
<a href="https://flutter.dev/web">Flutter for web</a> that lets you take Flutter UI code and business logic
and run it directly in the browser.</p>
<h3 id="q-will-the-dart-vm-get-into-chrome">
<a id="q-will-the-dart-vm-get-into-chrome" class="anchor" href="#q-will-the-dart-vm-get-into-chrome" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. Will the Dart VM get into Chrome?</h3>
<p><a href="http://news.dartlang.org/2015/03/dart-for-entire-web.html">No.</a>
Dart is designed to compile to JavaScript to run across the modern web.</p>
<hr>
<h2 id="web-javascript-and-other-technologies">
<a id="web-javascript-and-other-technologies" class="anchor" href="#web-javascript-and-other-technologies" aria-hidden="true"><span class="octicon octicon-link"></span></a>Web: JavaScript and other technologies</h2>
<h3 id="q-how-does-dart-code-interoperate-with-javascript-libraries">
<a id="q-how-does-dart-code-interoperate-with-javascript-libraries" class="anchor" href="#q-how-does-dart-code-interoperate-with-javascript-libraries" aria-hidden="true"><span class="octicon octicon-link"></span></a>Q. How does Dart code interoperate with JavaScript libraries?</h3>
<p>Although Dart and JavaScript are completely separate languages with
separate VMs, they can interoperate. For more information, see
<a href="/web/js-interop">JavaScript and TypeScript interop</a>.</p>