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vscode-docs/release-notes/v1_19.md

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November 2017 Visual Studio Code November 2017 See what is new in the Visual Studio Code November 2017 Release (1.19) 1_19/release-highlights.png

November 2017 (version 1.19)

Update 1.19.3: The update addresses issue 42144 where the Workbench failed to load when having the Running Extensions view opened and profiling.

Update 1.19.2: The update addresses these issues. This update also includes a fix for an Electron security vulnerability. To learn more details about the applied mitigation, see this blog post.

Update 1.19.1: The update addresses these issues.

Note: As a result of fixing issue 40351, we now require you to pass "-" as an argument to explicitly signal that the output of a piped command is coming in through stdin. For example: echo Hello World | code - (Windows) and ps aux | grep code | code - (macOS, Linux). This is a breaking change from 1.19.0, please update any scripts that make use of this functionality.

Downloads: Windows | Mac | Linux 64-bit: .tar.gz .deb .rpm | Linux 32-bit: .tar.gz .deb .rpm

Welcome to the November 2017 release of Visual Studio Code. As announced in the November iteration plan, the focus this month was on GitHub issue clean-up, product performance, and data collection tools for better issue reporting.

During this iteration, we closed 4400 issues (either triaged or fixed) across all our VS Code repositories. As we busily closed issues, you did not stop filing new ones and you created around 2700 new issues. This resulted in a net reduction of around 1700 issues of which 1400 were in the main vscode repository.

Bug fixes as well as community PRs still resulted in a great list of updates. Here are some of the release highlights:

If you'd like to read these release notes online, go to Updates on code.visualstudio.com.
You can also check out this 1.19 release highlights video from Cloud Developer Advocate Brian Clark.

The release notes are arranged in the following sections related to VS Code focus areas. Here are some further updates:

  • Workbench - Compare your active file to the Clipboard contents.
  • Editor - Folding improvements, interval line numbers, support macOS global Clipboard.
  • Languages - TypeScript 2.6.2, JSX fragment syntax, new JSON with comments mode.
  • Debugging - Undefine env variables per session, better VARIABLES rendering.
  • Extensions - Choose which extensions are active in your workspaces.
  • Extension Authoring - Pre-release extension support, yo code can enable TSLint and checkJS.

Insiders: Want to see new features as soon as possible? You can download the nightly Insiders build and try the latest updates as soon as they are available.

Performance

Performance is key to an editor and during November we fixed almost 50 performance-related issues. We spent significant time in the profiler and revisited the initialization phase of VS Code. Improving performance is not just about optimizing algorithms but also about improving perceived performance for the user. We began thinking about the startup life-cycle phases (#38080) to better order the creation of our components for faster perceived startup (for instance, always try to show a blinking cursor in the editor). To learn more about our performance work, you can review our issues labeled with perf-startup, perf-bloat (source code reduction), or perf.

Finally here are some noteworthy optimizations we'd like to mention:

  • Improve startup and overall performance with an improved configuration-model #37426, #37539.
  • Improve startup by caching extension information from package.json files #28331.
  • Improve startup by delaying the creation of helper processes, like file watcher #38230, search app #38235, and extensions process #38323.
  • Improve file loading for better startup performance #37541.
  • Use the faster list widget instead of the tree when possible #38638. Rework the BREAKPOINTS view and the OPEN EDITORS Explorer section.
  • Optimize the handling of touch events for improved performance #37917.
  • Improve the overall workbench performance by skipping unnecessary layouts and computations 39699, #39185, #38966, #38963, #38962, #38960.
  • Improve startup by removing unused code #38414.

And we are not done. Performance is a constant theme of the whole development team. Track our work with the perf-labels and don't be shy in filing performance related issues.

Serviceability

This release we also focused on VS Code serviceability in order to make it easier for you to provide us with the information we need to track down issues. We worked on logging, diagnostics, and extension monitoring to help you help us to make VS Code even better. Some of these features are still under development but we wanted to get these tools in your hands early.

Logging

VS Code now creates activity log files which can help diagnose unexpected issues like crashes, delays, etc.. When running, VS Code creates four primary processes, main, shared, renderer and extension-host, and each process logs into its own log file. You can open each log file using the command Developer: Show Logs... which will open a process picker to select the specific process log file.

Log picker

VS Code supports following log levels:

  • critical
  • error
  • warn
  • info
  • debug
  • trace
  • off

By default, VS Code is configured with info level and logs info and the levels above (warn, error, critical). You can change the log level using the command-line argument --log.

--log <level>
    Log level to use. Default is 'info'. Allowed values are 'critical', 'error', 'warn', 'info', 'debug', 'trace', 'off'.

You can also turn off logging using the option --log off.

--status command-line option

A new command-line argument was added which prints some useful VS Code diagnostics information to the terminal. You can share this information with us in GitHub issues and we will have a better understanding of the state of VS Code at the time of the issue.

Run code --status from the command line while another instance of VS Code is running and, after collecting status, you will see a display like this:

Status output

The output includes information about the environment, all running processes, and the counts of some common file types in the workspace.

VS Code process view

As a by-product of the new VS Code command-line option --status, we created an experimental extension vscode-processes that shows all child processes of VS Code in a custom view and dynamically updates as processes come and go. To better understand the role of those processes, the extension analyses the process arguments and labels the processes accordingly. The extension's CPU load and memory consumption is also shown in parentheses.

Process View

In addition, the extension tries to identify processes that can be debugged by VS Code itself and offers a debug action for those in the context menu. All processes can be terminated or killed from the menu as well.

This extension is still a prototype and so it is not yet available on the Marketplace but you can easily build the extension VSIX by running the following commands:

  git clone https://github.com/weinand/vscode-processes
  cd vscode-processes
  npm install
  npm run package

Once the extension VSIX is created, use VS Code's Install from VSIX... command to install the extension.

Running extensions

To make it easier for users to detect faulty or poorly performing extensions, we added a Running Extensions view. This view shows all the extensions which are currently running along with useful performance information. With this view, users can also profile VS Code in order to detect which extensions take the most time and are a likely cause of performance issues. Run the Developers: Show Running Extensions command from the Command Palette to see this view.

Running extensions

Note: The Running Extensions view is still under development so expect to see updates in future releases. We'd also appreciate your feedback.

How to file performance and native crash issues

We have created guides for:

Workbench

New editor tabs layout option

A new setting, workbench.editor.tabSizing, was added to control how tabs should size depending on the space available in the outer container. The default (fit) works as before and will always ensure that the tab shows the entire name of the file. If space gets too little, a scroll bar will appear.

You can change this behavior by setting this new option to shrink. When there is little space available, the tabbed headers will shrink up to a minimum and thus make it less likely that a scroll bar appears.

Shrinking Tabs

Pipe output directly into VS Code

We added support to pipe the output of a terminal command directly into VS Code and have it open in an editor:

Pipe Output

The encoding of the terminal will be determined by running the command locale charmap on Linux/macOS and chcp on Windows. You can also set a VSCODE_CLI_ENCODING environment variable to specify the encoding manually.

Note: We will now open a temporary file for reading from stdin as soon as we detect that stdin is not connected to a terminal. If you are in a setup where you start VS Code via the shell script (code.sh or code.cmd) from an application that is not a terminal, please change that to start our executable directly instead.

Compare open file to Clipboard

Thanks to PR #37841 from Max Furman (@maxfurman), you can now compare the contents of the currently opened file with the contents of the Clipboard. The command is Compare Active File with Clipboard (command id workbench.files.action.compareWithClipboard).

workbench.panel.location is deprecated

We have removed the workbench.panel.location from settings and are now saving this in storage. All the previous functionality for moving the panel to the side is retained. More details about this change can be found here.

Editor

Smarter IntelliSense

VS Code IntelliSense re-sorts suggestions as you type. This ensures that the most relevant suggestions are near the top. However, there are cases in which multiple suggestions match equally well, for example con matches on confirm, console, const, and constructor equally well and lexicographic sort decides which suggestion is pre-selected.

In this release, we've updated IntelliSense to remember what you have selected in such cases. Select const for the con prefix once and it will be the top match in the future.

IntelliSense Memory

Sometimes when you are typing, you may accidentally mix up neighboring characters, for instance instead of console, you might type cnosole, or resutl instead of result. We have made IntelliSense more relaxed and it will now try a few permutation when scoring suggestions.

IntelliSense Relaxed

In the sample above, IntelliSense favors the console suggestion by changing cnos to cons as that match is stronger than the match of cnos on RTCIceTransportStateChangedEvent.

Folding improvements

We have changed Shift + Click on the folding icons to not only fold/unfold the corresponding section but also all its children.

New folding regions have been added for the following languages:

  • CSS/Less/SCSS: /*#region*/ and /*#endregion*/
  • Coffeescript: #region and #endregion
  • PHP: #region and #endregion
  • Bat: ::#region and ::#endregion

Note: If you don't remember a folding marker, type # at the beginning of a line and you will get IntelliSense suggestions. Each language proposes completion proposals or snippets.

New folding commands have been added:

  • Fold All Regions (kb(editor.foldAllMarkerRegions)) folds all regions from markers (for example #region).
  • Unfold All Regions (kb(editor.unfoldAllMarkerRegions)) unfolds all regions from markers.
  • Fold All Block Comments (kb(editor.foldAllBlockComments)) folds all regions that start with a block comment token (for example /*).

Interval line numbers

Thanks to PR #37120 from David Weber, the setting editor.lineNumbers can now be configured with the value interval, which will cause VS Code to render the line numbers every 10th line.

Global find Clipboard on macOS

Thanks to PR #35956 from Melvin, the editor now integrates with the macOS global find Clipboard. If you search for something in VS Code or another native macOS applications and then switch to another, the find widget will contain the same text. This feature is turned on by default on macOS and you can disable it by setting editor.find.globalFindClipboard to false.

Languages

HTML

HTML now offers code completion for character entities, such as &gt;, &amp. To see the proposals, type & in a element content or attribute value and invoke IntelliSense.

Character Entities

JSON with comments

A new mode JSON with Comments (jsonc) has been added to distinguish between JSON-like files that allow comments and JSON files that follow the standard JSON specification. All VS Code configuration files use the new mode and allow comments, while .json files default to the standard JSON mode that will report comments as errors.

TypeScript 2.6.2

VS Code now includes TypeScript 2.6.2. This minor update fixes a few important bug fixes and tooling improvements.

JSX fragment syntax

TypeScript 2.6.2 also brings support for React 16.2's new JSX fragment syntax.

JSX fragment

Typescript reportStyleChecksAsWarnings

VS Code now displays TypeScript code style issues as warnings instead of errors. This applies to:

  • Variable is declared but never used
  • Property is declared but its value is never read
  • Unreachable code detected
  • Unused label
  • Fall through case in switch
  • Not all code paths return a value

Treating these as warnings is consistent with other tools, such as TSLint. These will still be displayed as errors when you run tsc from the command line.

You can disable this behavior by setting: "typescript.reportStyleChecksAsWarnings": false.

Language Server Protocol

The language server protocol was extended with the following new feature: a completion context given access to the trigger character, more completion item and symbol kinds as well as markdown support for completion items and signature help. The protocol additions are available in the 4.0.0-next.x version of the client and server npm modules.

Git

Image diffing

You can now view changes in your images, side by side, directly from your Git repository:

side by side image diff

Debugging

Edit Breakpoint command

We have added a new Edit Breakpoint... command to the BREAKPOINTS context menu. This will make it easier for users to edit the condition or hit count of breakpoints.

Edit breakpoint command

Undefining environment variables

Many debug extensions provide support for adding (or overriding) environment variables that are passed to the debug target. With this release, it is now possible to un-define (remove) a variable from the environment as well.

If an environment variable is set to null, this variable will be removed from the environment before the debug target is launched. This makes it much easier to test and debug code that relies on a variable not being defined.

Please note that in this release, only the Node.js debugger supports this.

New rendering style for synthetic elements in VARIABLES

In the debugger's VARIABLES view, we now show "synthetic" elements in a subdued style to distinguish them from the real "data" received from the debugger or runtime. In this release, only the "range" nodes of big arrays are considered "synthetic" and are rendered in the subdued style. We expect that more debug extensions will opt into this feature in the future.

Subdued synthetic variables

New debug settings

  • A new setting debug.showInStatusBar controls the visibility of the debug Status Bar item. Possible values are: never, always and the default onFirstSessionStart.
  • A new setting debug.openDebug controls the visibility of the Debug view. Possible values are: neverOpen, openOnSessionStart and the default openOnFirstSessionStart.

Extensions

Enable extensions per workspace

VS Code has had support for disabling extensions globally or per workspace. However, there was also demand for enabling extensions per workspace. With this release, you can configure extensions to run only for specific workspaces.

Enable extensions per workspace

New Documentation

Java topics

There is new set of Java topics showing how to use the Java Extension Pack for debugging, cloud deployment, and Azure Functions development.

Python topics

Python also has its own section where you can find tutorials for the Microsoft Python extension. There are topics starting with 'Hello World', moving on to debugging, linting, and unit testing.

Debugging Recipes

We've added several new debugging recipes:

See Debugging Recipes to learn more about these guides and find helpful blog posts.

Extension Authoring

Pre-release versions

You can now distribute extension VSIXs with pre-release versions like x.y.z-alpha, x.y.z-beta and VS Code will detect them and provide updates according to their version increments as defined here. Refer to this issue to learn more.

Extension generator - yo code

The yeoman generators for TypeScript and JavaScript extensions now provide additional options to enable more checking of your extensions. For TypeScript extensions the generator provides options to setup TSLint and to enable the strict TypeScript compiler options.

For JavaScript, there is a prompt to enable the checkJS option which enables type checking in JavaScript files.

Debug API updates

Preview: Breakpoints API

In this milestone, we've continued work on the Debug API related to breakpoints. It is now possible to access the set of all breakpoints of a workspace (vscode.debug.breakpoints) and register for notification about added, removed, or changed breakpoints (vscode.debug.onDidChangeBreakpoints).

Please note that accessing breakpoints initially returns an empty array but triggers a subsequent BreakpointsChangeEvent event that updates vscode.debug.breakpoints to the correct set. So if your code relies on the correct set of breakpoints, don't forget to register for BreakpointsChangeEvents.

The different types of breakpoints are represented as different subclasses of Breakpoint. Currently supported are SourceBreakpoint and FunctionBreakpoint. Use an instanceof check to determine the concrete type.

Note: Currently this API is proposed, so in order to use it, you must opt into it by adding a "enableProposedApi": true to package.json and you'll have to copy the vscode.proposed.d.ts into your extension project. Also be aware that you cannot publish an extension to the Marketplace that uses the enableProposedApi attribute.

Output text on Debug Console

The proposed Debug Console API from last month has been slightly modified and moved from "proposed" to "official". An extension can append text to the Debug Console with vscode.debug.activeDebugConsole.append(text) or vscode.debug.activeDebugConsole.appendLine(text). The deprecated debug.logToDebugConsole will be dropped as soon as it is no longer used in any extension on the Marketplace.

Debug contributions in package.json

More fine-grained debugger activation events

If a debug extension uses a DebugConfigurationProvider, it is important that the extension is activated early enough so that the DebugConfigurationProvider can be registered before first being used.

The foolproof way to achieve this is by adding the onDebug activation event to the activationEvents section of the extension's package.json. This works fine as long as the extension does not spend a lot of time in its startup sequence. If it does,for instance starting a language server, early activation must be avoided because it could negatively affect other debug extensions.

To simplify startup, we have introduced two more fine-grained activation events:

  • onDebugInitialConfigurations is fired just before the provideDebugConfigurations method of the DebugConfigurationProvider is called.
  • onDebugResolve:type is fired just before the resolveDebugConfiguration method of the DebugConfigurationProvider for the specified type is called.

Rule of thumb: If activation of a debug extensions is lightweight, use onDebug. If it is heavyweight, use onDebugInitialConfigurations and/or onDebugResolve depending on whether the DebugConfigurationProvider implements the corresponding methods provideDebugConfigurations and/or resolveDebugConfiguration.

Debug Adapter Protocol

New enum value virtual for the presentationHint.kind attribute of type Variable

The new enum value virtual indicates that the variable is a synthetic object introduced by the debugger for rendering or user interaction purposes. The client is expected to render this element in a different way then regular variables.

Support for removing variables from the environment

The runInTerminal request is used by a debug adapter to launch a debug target in an integrated or external terminal. One parameter to the request is the set of environment variables to pass to the debug target. In this release, null has been added to the environment variable's value type with the semantics "remove the environment variable from the environment before launching the target".

Engineering

Yarn

We now use Yarn to manage our production and development dependencies. This has greatly reduced the setup time to prepare a VS Code repository, both for development and build. More details are in this Pull Request.

New commands

Key Command Command id
kb(workbench.action.openRawDefaultSettings) Open Raw Default Settings workbench.action.openRawDefaultSettings
kb(workbench.action.toggleTabsVisibility) View: Toggle Tab Visibility workbench.action.toggleTabsVisibility
kb(workbench.action.lastEditorInGroup) View: Open Last Editor in Group workbench.action.lastEditorInGroup
kb(workbench.files.action.compareWithClipboard) Compare Active File with Clipboard workbench.files.action.compareWithClipboard
kb(search.action.refreshSearchResults) Refresh Search results search.action.refreshSearchResults
kb(search.action.collapseSearchResults) Collapse Search results search.action.collapseSearchResults
kb(search.action.clearSearchResults) Clear Search results search.action.clearSearchResults

Notable Changes

  • 36491: Backspace should not always cancel code completion
  • 39594: Problems with nested snippet insertion
  • 11928: Possible to bring up multiple dialogs on same dirty file when closing
  • 31667: Configuration values are missing from files on remote network drives
  • 18733: Dragging a tab can show visual glitch when tab not fully visible
  • 16690: Closing tabs using mouse wheel click turns cursor into auto scroll
  • 30530: Keyboard Shortcut to Skip Preview Using Quick Open
  • 17552: Switch to Unsaved Tab When Prompting to Save
  • 15477: Support dependencies for VSIX extensions
  • 26871: Show a count badge for Problems panel
  • 35580: Make "Workspace" and "Folder" settings more discoverable
  • 38609: Install older version of an extension using VSIX
  • 28331: Cache extension manifest files
  • 38481: Use Yarn to manage dependencies
  • 35749: Improve image view in working tree

Thank You

Last but certainly not least, a big Thank You! to the following folks that helped to make VS Code even better:

Contributions to language-server-protocol:

Contributions to vscode-languageserver-node:

Contributions to vscode-extension-vscode:

Contributions to vscode-css-languageservice:

Contributions to vscode-html-languageservice:

Contributions to vscode-node-debug:

Contributions to vsce:

Contributions to vscode-tslint:

Contributions to vscode-recipes:

Contributions to localization:

This is the eighth month since we opened community localization in Transifex. We now have nearly 600 members in the Transifex VS Code project team. We appreciate your contributions, either by providing new translations, voting on translations, or suggesting process improvements.

Here is a snapshot of top contributors for this release. For details about the project including the contributor name list, visit the project site at https://aka.ms/vscodeloc.

  • French: Antoine Griffard, Bruno Lewin, Maxime COQUEREL.
  • Italian: Alessandro Alpi, Piero Azi, Aldo Donetti.
  • German: thefreshman89, Carsten Kneip, Dejan Dinic, Volkmar Rigo, Max Schmitt.
  • Spanish: Roberto Fonseca, Raul Rama, Alberto Poblacion, Carlos Mendible, Thierry DEMAN-BARCELO, Andy Gonzalez, Juan Ramón Rodríguez, David Triana, Pedro Sánchez, Jorge Serrano Pérez.
  • Japanese: EbXpJ6bp, Tomoaki Yoshizawa, Yuichi Nukiyama, tanaka_733, 杉田 寿憲, Yoshihisa Ozaki, Hiroyuki Mori, Miho Yamamoto, Yuki Ueda.
  • Chinese (Simplified): Joel Yang, 王东程, Wang Weixuan, 陈嘉恺, bingzheyuan, YF.
  • Chinese (Traditional): Duran Hsieh, Winnie Lin, Kirk Chen, Ke-Hsu Chen.
  • Korean: Ian Y. Choi.
  • Hungarian: Tar Dániel.
  • Portuguese (Brazil): Roberto Fonseca, Bruno Sonnino, Lucas Miranda, SQLCrespi, Alefe Souza, Felipe Caputo, Danilo Dantas, João Holanda, .
  • Portuguese (Portugal): BlueKore, António Campos, Ruben Mateus.
  • Turkish: Adem Coşkuner.
  • Bulgarian: Любомир Василев, Didi Milikina, Bozhidar Gevechanov, Ilia Iliev.
  • Dutch: Maarten van Stam, Armand Duijn, Senno Kaasjager, Elmar Jansen, Gerjan, Gerald Versluis, Peter Hut.
  • Indonesian: Joseph Aditya P G, Hendra Setiawan, Febrian Setianto (Feber), simplyeazy, Septian Primadewa, Riwut Libinuko, Alfa Phi.
  • Polish: Wojciech Maj, Patryk Adamczyk, Patryk Zawadzki, Sölve Svartskogen, Mateusz Wyczawski, KarbonKitty, Marek Kurdej, Adam Borowski, Paweł Sołtysiak, Jakub Drozdek.
  • Serbian: Darko Puflović, Марко М. Костић, Nikola Radovanović.
  • Swedish: Joakim Olsson.
  • Tamil: rajakvk, Praveen, Karunakaran Samayan, Nadar Solomon Sunder.
  • Thai: Sirisak Lueangsaksri, Yuttana Buasen.
  • Ukrainian: R.M., Oleksandr, Bogdan Surai, Borys Lebeda, Yevhen Kuzminov.
  • Vietnamese: Thanh Phu, Khoi Pham, Hung Nguyen, Vuong, Trung Đào.