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AngularTools is a collection of tools for exploring a Angular project, help you with documenting, reverse engineering a project or help when refactoring.

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AngularTools

Visual Studio Marketplace Version Visual Studio Marketplace Installs GitHub top language GitHub last commit GitHub

AngularTools is a Visual Studio Code extension with a collection of tools for exploring an Angular project, help you with documenting, reverse engineering a project or help when refactoring.

Some of the tools may seem very basic, but can be a powerful help when you have them right at your fingertips.

Find it on the Visual Studio Code marketplace.

Features

  • Show the module hierarchy
  • Show the dependency injection graph
  • Show the component hierarchy
  • Save the graphs as png, dgml or dot files
  • Summarizes all the Angular modules
  • Generate a markdown file with the component hierarchy in Mermaid format.
  • Show the directory structure of the project
  • Generate list of packages used in the project
  • List all imports

Below is a detailed description of each feature.

Show the module hierarchy #

The 'Show module hierarchy' command is used for visualizing the hierarchy of the modules in an Angular application. The command scans all the *.ts files in the project to identify classes decorated with the @NgModule class decorator and then visualize how each module is imported by other modules. It will also visualize the classes specified in the imports and the exports section of the NgModule definition.

When you click a node the file it is associated with will be opened in the editor.

In the visualization the classes will be colored depending on the class decorator of each class:

  • Modules are red
  • Components are blue
  • Pipes are yellow
  • Directives are green

Show module hierarchy

Show the dependency injection graph #

The 'Show a graph representing the components and the injected dependencies' command generates a directed graph representing the components and the services injected into the components of an Angular application. The command scans all *.ts files of the application and for each class decorated with the @Component decorator, it analyses the constructor and each field in the class to identify all injected classes and to identify all the fields decorated with the Input, Output, ViewChild, ViewChildren, ContentChild and ContentChildren decorators.

When you click a node the file it is associated with will be opened in the editor.

In the visualization the components will by default be colored dark blue and the injected classes will be colored light blue.

Show dependency injection graph

Show the component hierarchy #

The 'Show the component hierarchy' command is used for visualizing the component hierarchy and Angular application. It analyses all the *.component.ts files and all the corresponding *.component.html template files to determine how the component use each other and then generates a directed graph showing the component hierarchy.

When you click a node the file it is associated with will be opened in the editor.

The command uses a vscode webview extension component to render the hierarchy using html, javascript and the Vis.js javascript library. This has the downside that copying the generated graph to the clipboard is not yet possible due to limitations in the vscode extension api. So to overcome this limitation the generated graph can be saved as a Png file to the root of the project you are analyzing. You can also save the graph in the Dgml format or in the GraphViz Dot format.

Show component hierarchy

Save as GraphViz dot format and generate a graph from the dot file: Save as GraphViz dot format

You can also choose to save a selection from the graph as shown in the example below.

Show component hierarchy

By default the component hierarchy graph is rendered using a random layout. You can change the layout method to use a hierarchical layout to line up the nodes in the graph in different ways and also change how the layout engine sorts the nodes in the graph. This is all done by checking the 'Change layout' checkbox to show the drop down boxes with the available options.

Show component hierarchy

Generate a markdown file with the component hierarchy in Mermaid format #

This command will generate the component hierarchy in markdown format using Mermaid notation.

Please notice that some online tools and sites do not support Mermaid markdown format yet, like GitHub and Visual Studio Code. To preview markdown files using the mermaid notation in Visual Studio Code i'm using the Markdown Preview Mermaid Support extension.

Generate graph in Mermaid notation

Generate a markdown file that summarizes all the Angular modules #

This command will scan all *.ts files in the workspace folders and find those classes that are decorated with the '@NgModule' class decorator and parse the module definition and then summarize each module into a markdown file.

The summarization will consist of two parts: First a table listing how many imports, exports, declarations and so on each module contains. The second part shows what each module contain.

Generate markdown file from all modules

Show the directory structure of the project #

This command lists the entire directory structure of the currently open project. Sometimes this can be a quick way to get an overview of the project if you are new to the project before og maybe need to document it.

The directory structure will be listed in the output window for the AngularTools extension for easy copy/pasting.

Show the directory structure of the project

Generate list of packages used in the project #

Sometimes your boss or a customer requires documentation of which packages is used in the project. This command can save you a lot of tedious manual work by analyzing the package.json file and for each referenced package queries the npmjs.com website to fetch the description for the package and from that generates a Markdown file with a table of the packages with their descriptions.

The license information is retrieved from the package.json file for each package in the node_modules folder in the root of the workspace, this mean that the license will show 'N/A' if you have not run the 'npm install' yet.

Generate list of packages used in the project

List all imports #

This command will analyse all Angular components in the project and collect all the imports of the components together with the number of times the imported component is used. This can be useful when refactoring or identifying frequently used modules. Usually frequently used modules needs extra attention or care before being changed during refactoring. You can also use the command to identify modules that are not referenced in a consistent way where some components are using relative path and some components using path-aliases.

List all imports

Settings

Project settings

You can place a file named ".vscodeangulartools" in the workspace root folder where you can specify folders to exclude or include in json format.

Only the two parameters "includeFolders" and "excludeFolders" are used at the moment. They are both semicolon separated list of folder names.

If you add a includeFolders parameter, then only child folders of the folders in the list will be included. If you add a folder to the excludeFolders parameter then no files from the folder or its child-folders will be included.

Notice that the filename comparison from v1.13.0 is case-sensitive. This may affect Windows user because the Windows filesystem is not case sensitive and if you previously added a path then it may not work anymore. So if you experience that your graph is no longer rendered as it used to be, then it may be because your includeFolders paths have the wrong casing in the settings file.

Example:

{
    "includeFolders": "d:\\Src\\Angular-Examples\\angular8-example-app\\src",
    "excludeFolders": "d:\\Src\\Angular-Examples\\angular8-example-app\\src\\app\\shared"
}

Global settings

In the Visual Studio Code settings you find under File --> Preferences --> Settings, under Extensions, there is a section with all the settings for AngularTools. It is possible to change the default filenames used when the extension saves a file to the workspace folder. You can change how the component hierarchy graph nodes are rendered, the edge endings, the color of the root nodes and a lot more.

See the full list of settings below the screenshot.

AngularTools settings

Setting Description
angularTools.excludeDirectories Semicolon separated list of directories that should be excluded when scanning for for Angular components.
angularTools.dgmlGraph.graphLayout This is the algorithm used to layout the nodes of the graph. Sugiyama wil try to avoid crossing edges as far as possible. ForceDirected will try to cluster the nodes.
angularTools.dgmlGraph.graphDirection This will make the layout algorithm position the graph nodes in the specified direction.
angularTools.dependencyInjectionGraph.pngGraphFilename The default name used when saving the dependency injection hierarchy graph to a Png file.
angularTools.dependencyInjectionGraph.dgmlGraphFilename The default filename used when saving a dependency injection hierarchy graph to a Directed Graph Markup Language (Dgml) file.
angularTools.dependencyInjectionGraph.edgeArrowToType The default ending of the edges.
angularTools.showComponentHierarchy.componentHierarchyPngFilename The default name used when saving the component hierarchy to a Png file.
angularTools.showComponentHierarchy.componentHierarchyDgmlGraphFilename The default name used when saving the component hierarchy to a Dgml file.
angularTools.showComponentHierarchy.edgeArrowToType The default ending of the edges.
angularTools.showModuleHierarchy.moduleHierarchyPngFilename The default name used when saving the module hierarchy to a Png file.
angularTools.showModuleHierarchy.moduleHierarchyDgmlGraphFilename The default name used when saving the module hierarchy to a Dgml file.
angularTools.showModuleHierarchy.edgeArrowToType The default ending of the edges.
angularTools.graphSelection.graphSelectionGuidelineColor The color of the guidelines used when selecting part of a component hierarchy graph. The string should be in rgb format or standard css color names.
angularTools.graphSelection.graphSelectionGuidelineWidth The width of the guide lines shown when selecting part of a component hierarchy graph
angularTools.graphSelection.graphSelectionColor The color of the selection rectangle used when selecting part of a component hierarchy graph. The string should be in rgb format or standard css color names.
angularTools.graphSelection.graphSelectionWidth The width of the selection rectangle shown when selecting part of a component hierarchy graph
angularTools.graphNodes.rootNodeBackgroundColor The color of the root nodes of the component hierarchy graph. The string should be in rgba format or standard css color names.
angularTools.graphNodes.rootNodeNodeShape The default shape of the nodes representing root nodes. Notice that 'ellipse','circle','database','box' and 'text' have the label inside the shape, the rest have the label outside the shape.
angularTools.graphNodes.componentNodeShape The default shape of the nodes representing components. Notice that 'ellipse','circle','database','box' and 'text' have the label inside the shape, the rest have the label outside the shape.
angularTools.graphNodes.moduleNodeBackgroundColor The default color of the nodes representing modules.
angularTools.graphNodes.moduleNodeShape The default shape of the nodes representing modules. Notice that 'ellipse','circle','database','box' and 'text' have the label inside the shape, the rest have the label outside the shape.
angularTools.graphNodes.pipeNodeBackgroundColor The default color of the nodes representing pipes.
angularTools.graphNodes.pipeNodeShape The default shape of the nodes representing pipes. Notice that 'ellipse','circle','database','box' and 'text' have the label inside the shape, the rest have the label outside the shape.
angularTools.graphNodes.directiveNodeBackgroundColor The default color of the nodes representing directives.
angularTools.graphNodes.directiveNodeShape The default shape of the nodes representing directives. Notice that 'ellipse','circle','database','box' and 'text' have the label inside the shape, the rest have the label outside the shape.
angularTools.graphNodes.injectableNodeBackgroundColor The default color of the nodes representing injected components.
angularTools.graphNodes.injectableNodeShape The default shape of the nodes representing directives. Notice that 'ellipse','circle','database','box' and 'text' have the label inside the shape, the rest have the label outside the shape.
angularTools.graphNodes.maximumNodeLabelLength The maximum length of the label for the nodes in the hierarchy. If the class name, module definition, module imports, exports, directives or pipes are longer than the specified number of characters, it will be truncated to this length.
angularTools.edges.importEdgeColor The default color of the edges representing imports.
angularTools.edges.exportEdgeColor The default color of the edges representing exports.
angularTools.edges.injectableEdgeColor The default color of the edges representing injectables.
angularTools.edges.usesEdgeColor The default color of the edges representing components using other components.
angularTools.packageJsonMarkdownFilename The default filename used when saving the packages.json as a markdown file.
angularTools.projectDirectoryStructureMarkdownFilename The default filename used when saving the project directory structure as a markdown file.
angularTools.componentHierarchyMarkdownFilename The default name used when saving the component hierarchy to a markdown file.
angularTools.modulesToMarkdownFilename The default name used when saving the project module to a markdown file.

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