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<!doctype html>

<head>

</head>

<a href="http://ternjs.net" class=title>Tern: Intelligent JavaScript tooling

</a><a href="doc/demo/index.html">Demo

</a><a href="doc/manual.html">Docs

</a><a href="https://github.com/ternjs/tern">Code</a>

</div>

Tern is a stand-alone code-analysis engine for

JavaScript. It is intended to be used with a <a href="#plugins">code

editor plugin</a> to enhance the editor's support for intelligent

JavaScript editing. Features provided are:

<ul>

<li>Autocompletion on variables and properties

<li>Function argument hints

<li>Querying the type of an expression

<li>Finding the definition of something

<li>Automatic refactoring

</ul>

Tern is open-source (<a href="LICENSE">MIT license</a>), written in

JavaScript, and capable of running both

on <a href="http://nodejs.org">node.js</a> and in

the <a href="doc/demo/index.html">browser</a>.

NOTE: This project is looking for a new

maintainer, since the original author no longer has time to work on

it.

<h2><a id="plugins"></a>Editor plugins</h2>

There is currently Tern support for the following editors:

<ul>

<li><a href="doc/manual.html#emacs">Emacs</a>

<li><a href="https://github.com/ternjs/tern_for_sublime">Sublime Text</a>

<li><a href="http://brackets.io/">Brackets</a> (built in to the base editor)

<li><a href="https://github.com/mortalapeman/LT-TernJS">Light Table</a>

<li><a href="https://github.com/angelozerr/tern.java">Eclipse (and general Java API)</a>

<li><a href="https://github.com/fab1an/JavaScript-Tern-Completion.tmbundle">TextMate</a>

<li><a href="https://www.sourcelair.com/">SourceLair</a> (built in to the base editor)

<li><a href="https://chocolatapp.com">Chocolat</a> (built in to the base editor)

</ul>

Follow the links to find instructions on how to install the

plugins.

<h2><a id="support"></a>Community and support</h2>

There is a <a href="https://discuss.ternjs.net/">discussion

forum</a> for questions and discussion around Tern. For announcements,

such as new releases, there is a

low-volume <a href="https://groups.google.com/forum/?fromgroups#!forum/tern-announce">mailing

list</a>. For reporting bugs, I prefer that you use

the <a href="https://github.com/ternjs/tern/issues?state=open">github

issue tracker</a>.

Code contributions are welcome, preferably

through <a href="https://github.com/ternjs/tern/pulls">pull

requests</a>.

<h2><a id="docs"></a>Documentation</h2>

The <a href="doc/manual.html">reference manual</a> should be your

first stop for figuring out how to use Tern.

If you are interested in the way the system works internally, take

a look at this <a href="http://marijnhaverbeke.nl/blog/tern.html">blog

post</a> or the video

of <a href="https://www.youtube.com/watch?v=wW5VbogkDQ4">the talk</a>

I gave about it at the Curry On conference.

<h2><a id="releases"></a>Release history</h2>

10-11-2018: <a href="https://github.com/ternjs/tern/tree/0.23.0">Version 0.23</a>

<li>Upgrade Acorn to version 6.</li>

<li>Fix some crash issues caused by ECMAScript 6 syntax.</li>

<li>Update React definition.</li>

<li>Add Clipboard API to browser definition.</li>

</ul>

27-09-2018: <a href="https://github.com/ternjs/tern/tree/0.22.3">Version 0.22.3</a>

Small update release that fixes crashes

affecting spread operator in object notation, rest operatore in object pattern and export default anonymous class or function.

28-08-2018: <a href="https://github.com/ternjs/tern/tree/0.22.0">Version 0.22</a>

<li>Support async functions and async iteration.</li>

<li>Make the base type definitions match the current standards.</li>

<li>Make sure dynamic properties don't show up when completing object literal property names.</li>

<li>Pre-emptively start analyzing on startup.</li>

<li>Fix bug where renaming a variable might rename properties in the code.</li>

</ul>

18-02-2017: <a href="https://github.com/ternjs/tern/tree/0.21.0">Version 0.21</a>

<li>Support JSDoc-style object property docs in <code>doc_comments</code> plugin.</li>

<li>Various fixes and completions in the type definitions.</li>

<li>Fix bug where server self-resets left old state on AST.</li>

<li>Improve and document the <code>webpack</code> plugin.</li>

<li>Fix issue where file offsets were interpreted wrong when the file contained astral plane characters.</li>

</ul>

16-08-2016: <a href="https://github.com/ternjs/tern/tree/0.20.0">Version 0.20</a>

<li>Breaking: The <code>ecma5.json</code>

and <code>ecma6.json</code> definition files were combined

into <code>ecmascript.json</code>. If you are explicitly loading

these, for example in a web page, you'll have to update your

filenames.</li>

<li>Improved the typing of <code>Promise.resolve</code> calls</li>

<li>Support webpack config files in the webpack plugin</li>

<li>Make the Emacs mode mode robust when files are renamed</li>

<li>New option <code>inLiteral</code> in the JSON protocol to turn

off completions inside string/regexp literals</li>

<li>Define the ECMA7 <code>Array.includes</code> method</li>

</ul>

11-07-2016: <a href="https://github.com/ternjs/tern/tree/0.19.0">Version 0.19</a>

<li>Breaking: Drops the <code>from_ts</code> utility</li>

<li>New command line flag: <code>--ignore-stdin</code> to not exit when stdin is closed</li>

<li>Fix another crash related to omitted array elements</li>

<li>Improve handling of shorthand object properties during rename</li>

</ul>

15-03-2016: <a href="https://github.com/ternjs/tern/tree/0.18.0">Version 0.18</a>

<li>Improve typing of <code>this</code> bindings in arrow functions</li>

<li>Fix crash when fetching the type of a module without known type</li>

<li>Fix bug in scoping of renames, which erroneously included the scope's function name</li>

<li>Full <a href="https://github.com/ternjs/tern/compare/0.17.0...0.18.0">list of patches</a></li>

</ul>

04-01-2016: <a href="https://github.com/ternjs/tern/tree/0.17.0">Version 0.17</a>

<li>Support <code>@class</code> and <code>@constructor</code> JSDoc directives</li>

<li>Improve completion and finding of module exports and methods</li>

<li>Server objects now have a <code>deleteDefs</code> method</li>

<li>New plugin: webpack</li>

<li>Full <a href="https://github.com/ternjs/tern/compare/0.16.0...0.17.0">list of patches</a></li>

</ul>

27-10-2015: <a href="https://github.com/ternjs/tern/tree/0.16.0">Version 0.16</a>

<li>Support completion of imported names and package names from <code>package.json</code></li>

<li>Allow importing non-ES6 modules using <code>import foo from "bar"</code> syntax</li>

<li>Fix several crashes</li>

<li>Small improvements to the browser and ECMA6 definitions</li>

<li>Full <a href="https://github.com/ternjs/tern/compare/0.15.0...0.16.0">list of patches</a></li>

</ul>

02-09-2015: <a href="https://github.com/ternjs/tern/tree/0.15.0">Version 0.15</a>

<li>Fix crash bug triggered by string/number properties in object literals</li>

<li>Fix other crash bug triggered by holes in arrays</li>

<li>Support doc comments above classes and class methods</li>

<li>Full <a href="https://github.com/ternjs/tern/compare/0.14.0...0.15.0">list of patches</a></li>

</ul>

31-08-2015: <a href="https://github.com/ternjs/tern/tree/0.14.0">Version 0.14</a>

<li>Support for ECMAScript 6 constructs and standard library

<ul>

<li>Block scopes and let/const bindings

<li>Destructuring and default values

<li>Tuples/heterogenously typed arrays

<li>Rest arguments

<li>Generators

<li>Symbols and symbol properties

<li>For/of iteration

<li>Classes and super calls

<li>Extended object literal notation

<li>Arrow functions

<li>Template strings

<li>All methods and types added by the ES6 spec

<li>Improved existing support for Promises

</ul>

</li>

<li>Overhauled module system for <a href="doc/manual.html#plugin_commonjs">CommonJS modules</a>, separated it from node plugin</li>

<li>Add support for <a href="doc/manual.html#plugin_es_modules">ES6 modules</a></li>

<li><a href="doc/manual.html#plugins">Plugins</a> can now have dependencies. If your setup needs to explicitly load them, adjust accordingly</li>

<li>The <code>node_exports</code> query type was renamed to <code>exports</code> (and works on ES6 modules)</li>

<li>The <a href="doc/manual.html#tern.registerPlugin"><code>registerPlugin</code></a> interface was changed. The old style (returning an object) will be supported until 1.0</li>

<li>Improved completion of module names in CommonJS and ES6 module context</li>

<li>Phantom objects were added to support <code>foo.bar.baz = 10</code> if <code>foo.bar</code> doesn't have a type</li>

<li>Fix broken handling of non-ASCII requests in the Emacs mode</li>

<li>Full <a href="https://github.com/ternjs/tern/compare/0.13.0...0.14.0">list of patches</a></li>

</ul>

28-07-2015: <a href="https://github.com/ternjs/tern/tree/0.13.0">Version 0.13</a>

<li>Parse input as ES6 (but ignore most ES6 constructs for now)</li>

<li>Improved type inference for promises</li>

<li>Fix another source of exponential complexity blowup</li>

<li>Complete module names in the requirejs plugin</li>

<li>Improved type guessing for overridden properties</li>

<li>Fix a bug in the Emacs mode that caused cursor jumping in some situations</li>

<li>Full <a href="https://github.com/ternjs/tern/compare/0.12.0...0.13.0">list of patches</a></li>

</ul>

25-06-2015: <a href="https://github.com/ternjs/tern/tree/0.12.0">Version 0.12</a>

<li>Fix another infinite recursion bug</li>

<li>Rework doc comment stripping, allow passing <code>docFormat: "full"</code>

in a query to receive full strings.</li>

<li>Add a <code>preParse</code> hook that plugins can register.</li>

<li>Prevent observed calls from 'polluting' union types from JSON definitions.</li>

<li>Full <a href="https://github.com/ternjs/tern/compare/0.11.0...0.12.0">list of patches</a></li>

</ul>

29-04-2015: <a href="https://github.com/ternjs/tern/tree/0.11.0">Version 0.11</a>

<li>Fix infinite recursion bug in type's <code>toString</code> methods</li>

<li>Support <code>defineProperties</code></li>

<li>Full <a href="https://github.com/ternjs/tern/compare/0.10.0...0.11.0">list of patches</a></li>

</ul>

25-03-2015: <a href="https://github.com/ternjs/tern/tree/0.10.0">Version 0.10</a>

<li>Fix a problem where the existence of an incompatible Acorn 1.0.0 on NPM breaks new installs</li>

<li>Solve another infinitely-expanding-graph bug</li>

<li>Rewrite type parser (for .json definitions) to be more predictable</li>

<li>Full <a href="https://github.com/ternjs/tern/compare/0.9.0...0.10.0">list of patches</a></li>

</ul>

02-03-2015: <a href="https://github.com/ternjs/tern/tree/0.9.0">Version 0.9</a>

<li>Add support for union types. The strings for types will now

often contain <code>|</code> characters separating alternatives.

Such types are also allowed in JSDoc comments.</li>

<li>Add rough ECMAScript 6 type

definition, which adds some new variables and properties from ES6.

(note that this is still a far way off from real ES6 support.)</li>

<li>Various small bugfixes (<a href="https://github.com/ternjs/tern/compare/0.8.0...0.9.0">full list of patches</a>)</li>

</ul>

13-01-2015: <a href="https://github.com/ternjs/tern/tree/0.8.0">Version 0.8</a>

<li>Support <code>@self</code> and <code>@typedef</code> in doc_comments plugin</li>

<li>Improved purging of stale properties on file reload</li>

<li>Much improved completion of properties in object literals</li>

<li>Added <code>fullDocs</code> option to retrieve entire doc comment blocks</li>

<li>Improved support for <code>defineProperty</code> and getter/setter properties</li>

<li>Support deleting files through requests to the server</li>

<li>Support <code>module</code> object in RequireJS's simplified CommonJS mode</li>

<li>Various small bugfixes (<a href="https://github.com/ternjs/tern/compare/0.7.0...0.8.0">full list of patches</a>)</li>

</ul>

14-08-2014: <a href="https://github.com/ternjs/tern/tree/0.7.0">Version 0.7</a>

<li>Further refinements of the RequireJS plugin's path resolution</li>

<li>Add <code>isKeyword</code> and <code>isProperty</code> fields to completion query JSON repsonses</li>

<li>Various small bugfixes (<a href="https://github.com/ternjs/tern/compare/0.6.2...0.7.0">full list of patches</a>)</li>

</ul>

06-06-2014: <a href="https://github.com/ternjs/tern/tree/0.6.2">Version 0.6.2</a>

Small update release that fixes a crash

affecting asynchronous loading of files.

06-06-2014: <a href="https://github.com/ternjs/tern/tree/0.6.0">Version 0.6</a>

<li>Solves overload from pulling in huge dependency trees</li>

<li>Fixes various issues with stale information sticking around after file reload</li>

<li>Add support for a <code>~/.tern-config</code> default <a href="doc/manual.html#project_file">config file</a></li>

<li>Support a <a href="doc/manual.html#protocol"><code>timeout</code></a> field in requests, to limit their running time</li>

<li>Make it possible to load <a href="doc/manual.html#plugin_third_party">plugins</a> installed with <code>npm</code></li>

<li>Lots of small bugfixes (<a href="https://github.com/ternjs/tern/compare/0.5.0...0.6.0">full list of patches</a>)</li>

</ul>

10-10-2013: <a href="https://github.com/ternjs/tern/tree/0.5.0">Version 0.5</a>

<li>Improvements to the node plugin.</li>

<li>Experimental <a href="doc/manual.html#plugin_angular">Angular.js plugin</a>.</li>

<li>Rewrite of the <a href="doc/manual.html#condense"><code>condense</code></a> tool, tests added.</li>

<li>Better handling of “global” <code>this</code> in non-method calls.</li>

<li>Support <code>Array.<content></code>

and <code>Object.<key,value></code>-style types in

the <a href="doc/manual.html#plugin_doc_comment">doc_comment

plugin</a>.</li>

</ul>

12-08-2013: <a href="https://github.com/ternjs/tern/tree/0.4.0">Version 0.4</a>

<li>Several fixes for exponential running time on some inputs.</li>

<li>New IDO completion frontend for the Emacs mode.</li>

<li>Add missing <code>buffer</code> and <code>timers</code> modules to node plugin.</li>

<li>A few fixes to the <code>bin/condense</code> tool.

</ul>

10-07-2013: <a href="https://github.com/ternjs/tern/tree/0.3.0">Version 0.3</a>

<li>Better <code>this</code> handling.</li>

<li>Added underscore definition file.</li>

<li>Improved dependency resolution in node plugin.</li>

<li><code>node_exports</code> query type added.</li>

<li>Glob patterns in <code>loadEagerly</code>/<code>dontLoad</code> settings.</li>

</ul>

11-06-2013: <a href="https://github.com/ternjs/tern/tree/0.2.0">Version 0.2</a>

<li>Make the codebase Windows-safe.</li>

<li>Improved handling of large codebases.</li>

<li>Move comment parsing logic into a plugin (<code>doc_comment</code>).</li>

<li>Many bugfixes.</li>

</ul>

03-05-2013: <a href="https://github.com/ternjs/tern/tree/0.1.0">Version 0.1</a>

First numbered release. Should be considered

beta status, but useable enough to test.

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