Module: index

Table of contents

Enumerations

• ChangeType
• DependencyType

Classes

• ProjectGraphBuilder

Interfaces

• ExecutorContext
• FileChange
• FileData
• ImplicitJsonSubsetDependency
• JsonParseOptions
• JsonSerializeOptions
• NxAffectedConfig
• NxJsonConfiguration
• NxJsonProjectConfiguration
• NxPlugin
• ProjectConfiguration
• ProjectFileMap
• ProjectGraph
• ProjectGraphDependency
• ProjectGraphNode
• ProjectGraphProcessorContext
• StringDeletion
• StringInsertion
• Target
• TargetConfiguration
• TargetDependencyConfig
• Tree
• Workspace
• WorkspaceJsonConfiguration

Type aliases

• Executor
• Generator
• GeneratorCallback
• ImplicitDependencyEntry
• PackageManager
• ProjectType
• StringChange
• WorkspaceConfiguration

Variables

• logger

Functions

• addDependenciesToPackageJson
• addProjectConfiguration
• applyChangesToString
• convertNxExecutor
• convertNxGenerator
• formatFiles
• generateFiles
• getPackageManagerCommand
• getProjects
• getWorkspaceLayout
• getWorkspacePath
• installPackagesTask
• joinPathFragments
• moveFilesToNewDirectory
• names
• normalizePath
• offsetFromRoot
• parseJson
• parseTargetString
• readJson
• readJsonFile
• readProjectConfiguration
• readTargetOptions
• readWorkspaceConfiguration
• removeDependenciesFromPackageJson
• removeProjectConfiguration
• runExecutor
• serializeJson
• stripIndents
• stripJsonComments
• targetToTargetString
• toJS
• updateJson
• updateProjectConfiguration
• updateTsConfigsToJs
• updateWorkspaceConfiguration
• visitNotIgnoredFiles
• writeJson
• writeJsonFile

Enumerations

ChangeType

• ChangeType: object

DependencyType

• DependencyType: object

Type of dependency between projects

Classes

ProjectGraphBuilder

• ProjectGraphBuilder: object

Builder for adding nodes and dependencies to a ProjectGraph

Interfaces

ExecutorContext

• ExecutorContext: object

Context that is passed into an executor

FileChange

• FileChange: object

Description of a file change in the Nx virtual file system/

FileData

• FileData: object

Some metadata about a file

ImplicitJsonSubsetDependency

• ImplicitJsonSubsetDependency<T>: object

Type parameters

JsonParseOptions

• JsonParseOptions: object

JsonSerializeOptions

• JsonSerializeOptions: object

NxAffectedConfig

• NxAffectedConfig: object

NxJsonConfiguration

• NxJsonConfiguration<T>: object

Nx.json configuration

Type parameters

NxJsonProjectConfiguration

• NxJsonProjectConfiguration: object

NxPlugin

• NxPlugin: object

A plugin for Nx

ProjectConfiguration

• ProjectConfiguration: object

Project configuration

ProjectFileMap

• ProjectFileMap: object

A list of files separated by the project they belong to

ProjectGraph

• ProjectGraph<T>: object

A Graph of projects in the workspace and dependencies between them

Type parameters

ProjectGraphDependency

• ProjectGraphDependency: object

A dependency between two projects

ProjectGraphNode

• ProjectGraphNode<T>: object

A node describing a project in a workspace

Type parameters

ProjectGraphProcessorContext

• ProjectGraphProcessorContext: object

Additional information to be used to process a project graph

StringDeletion

• StringDeletion: object

StringInsertion

• StringInsertion: object

Target

• Target: object

TargetConfiguration

• TargetConfiguration: object

Target's configuration

TargetDependencyConfig

• TargetDependencyConfig: object

Tree

• Tree: object

Virtual file system tree.

Workspace

• Workspace: object

WorkspaceJsonConfiguration

• WorkspaceJsonConfiguration: object

Workspace configuration

Type aliases

Executor

Ƭ Executor<T>: (options: T, context: ExecutorContext) => Promise<{ success: boolean }> | AsyncIterableIterator<{ success: boolean }>

Implementation of a target of a project

Type parameters

Type declaration

▸ (options: T, context: ExecutorContext): Promise<{ success: boolean }> | AsyncIterableIterator<{ success: boolean }>

Parameters

Returns: Promise<{ success: boolean }> | AsyncIterableIterator<{ success: boolean }>

Generator

Ƭ Generator<T>: (tree: any, schema: T) => void | GeneratorCallback | Promise<void | GeneratorCallback>

A function that schedules updates to the filesystem to be done atomically

Type parameters

Type declaration

▸ (tree: any, schema: T): void | GeneratorCallback | Promise<void | GeneratorCallback>

Parameters

Returns: void | GeneratorCallback | Promise<void | GeneratorCallback>

GeneratorCallback

Ƭ GeneratorCallback: () => void | Promise<void>

A callback function that is executed after changes are made to the file system

Type declaration

▸ (): void | Promise<void>

Returns: void | Promise<void>

ImplicitDependencyEntry

Ƭ ImplicitDependencyEntry<T>: object

Type parameters

Type declaration

PackageManager

Ƭ PackageManager: "yarn" | "pnpm" | "npm"

ProjectType

Ƭ ProjectType: "library" | "application"

Type of project supported

StringChange

Ƭ StringChange: StringInsertion | StringDeletion

A change to be made to a string

WorkspaceConfiguration

Ƭ WorkspaceConfiguration: Omit<WorkspaceJsonConfiguration, "projects"> & Omit<NxJsonConfiguration, "projects">

Variables

logger

• Const logger: object

Type declaration

Functions

addDependenciesToPackageJson

▸ addDependenciesToPackageJson(host: Tree, dependencies: Record<string, string>, devDependencies: Record<string, string>, packageJsonPath?: string): GeneratorCallback

Add Dependencies and Dev Dependencies to package.json

For example:

1addDependenciesToPackageJson(host, { react: 'latest' }, { jest: 'latest' });

This will add react and jest to the dependencies and devDependencies sections of package.json respectively.

Parameters

Returns: GeneratorCallback

Callback to install dependencies only if necessary. undefined is returned if changes are not necessary.

addProjectConfiguration

▸ addProjectConfiguration(host: Tree, projectName: string, projectConfiguration: ProjectConfiguration & NxJsonProjectConfiguration): void

Adds project configuration to the Nx workspace.

The project configuration is stored in workspace.json and nx.json. The utility will update both files.

Parameters

Returns: void

applyChangesToString

▸ applyChangesToString(text: string, changes: StringChange[]): string

Applies a list of changes to a string's original value.

This is useful when working with ASTs.

For Example, to rename a property in a method's options:

1const code = `bootstrap({
2  target: document.querySelector('#app')
3})`;
4
5const indexOfPropertyName = 13; // Usually determined by analyzing an AST.
6const updatedCode = applyChangesToString(code, [
7  {
8    type: ChangeType.Insert,
9    index: indexOfPropertyName,
10    text: 'element',
11  },
12  {
13    type: ChangeType.Delete,
14    start: indexOfPropertyName,
15    length: 6,
16  },
17]);
18
19bootstrap({
20  element: document.querySelector('#app'),
21});

Parameters

Returns: string

convertNxExecutor

▸ convertNxExecutor(executor: Executor): any

Convert an Nx Executor into an Angular Devkit Builder

Use this to expose a compatible Angular Builder

Parameters

Returns: any

convertNxGenerator

▸ convertNxGenerator<T>(generator: Generator<T>): function

Convert an Nx Generator into an Angular Devkit Schematic

Type parameters

Parameters

Returns: (options: T) => (tree: any, context: any) => Promise<any>

formatFiles

▸ formatFiles(host: Tree): Promise<void>

Formats all the created or updated files using Prettier

Parameters

Returns: Promise<void>

generateFiles

▸ generateFiles(host: Tree, srcFolder: string, target: string, substitutions: { [k: string]: any; }): void

Generates a folder of files based on provided templates.

While doing so it performs two substitutions:

• Substitutes segments of file names surrounded by __
• Uses ejs to substitute values in templates

Examples:

1generateFiles(host, path.join(__dirname, 'files'), './tools/scripts', {
2  tmpl: '',
3  name: 'myscript',
4});

This command will take all the files from the files directory next to the place where the command is invoked from. It will replace all __tmpl__ with '' and all __name__ with 'myscript' in the file names, and will replace all <%= name %> with myscript in the files themselves. tmpl: '' is a common pattern. With it you can name files like this: index.ts__tmpl__, so your editor doesn't get confused about incorrect TypeScript files.

Parameters

Returns: void

getPackageManagerCommand

▸ getPackageManagerCommand(packageManager?: PackageManager): object

Returns commands for the package manager used in the workspace. By default, the package manager is derived based on the lock file, but it can also be passed in explicitly.

Example:

1execSync(`${getPackageManagerCommand().addDev} my-dev-package`);

Parameters

Returns: object

getProjects

▸ getProjects(host: Tree): Map<string, ProjectConfiguration & NxJsonProjectConfiguration>

Get a map of all projects in a workspace.

Use readProjectConfiguration if only one project is needed.

Parameters

Returns: Map<string, ProjectConfiguration & NxJsonProjectConfiguration>

getWorkspaceLayout

▸ getWorkspaceLayout(host: Tree): object

Returns workspace defaults. It includes defaults folders for apps and libs, and the default scope.

Example:

1{ appsDir: 'apps', libsDir: 'libs', npmScope: 'myorg' }

Parameters

Returns: object

getWorkspacePath

▸ getWorkspacePath(host: Tree): string

Parameters

Returns: string

installPackagesTask

▸ installPackagesTask(host: Tree, alwaysRun?: boolean, cwd?: string, packageManager?: PackageManager): void

Runs npm install or yarn install. It will skip running the install if package.json hasn't changed at all or it hasn't changed since the last invocation.

Parameters

Returns: void

joinPathFragments

▸ joinPathFragments(...fragments: string[]): string

Normalized path fragments and joins them

Parameters

Returns: string

moveFilesToNewDirectory

▸ moveFilesToNewDirectory(host: Tree, oldDir: string, newDir: string): void

Parameters

Returns: void

names

▸ names(name: string): object

Util function to generate different strings based off the provided name.

Examples:

1names('my-name'); // {name: 'my-name', className: 'MyName', propertyName: 'myName', constantName: 'MY_NAME', fileName: 'my-name'}
2names('myName'); // {name: 'my-name', className: 'MyName', propertyName: 'myName', constantName: 'MY_NAME', fileName: 'my-name'}

Parameters

Returns: object

normalizePath

▸ normalizePath(osSpecificPath: string): string

Coverts an os specific path to a unix style path

Parameters

Returns: string

offsetFromRoot

▸ offsetFromRoot(fullPathToDir: string): string

Calculates an offset from the root of the workspace, which is useful for constructing relative URLs.

Examples:

1offsetFromRoot('apps/mydir/myapp/'); // returns "../../../"

Parameters

Returns: string

parseJson

▸ parseJson<T>(input: string, options?: JsonParseOptions): T

Parses the given JSON string and returns the object the JSON content represents. By default javascript-style comments are allowed.

Type parameters

Parameters

Returns: T

Object the JSON content represents

parseTargetString

▸ parseTargetString(targetString: string): Target

Parses a target string into {project, target, configuration}

Examples:

1parseTargetString('proj:test'); // returns { project: "proj", target: "test" }
2parseTargetString('proj:test:production'); // returns { project: "proj", target: "test", configuration: "production" }

Parameters

Returns: Target

readJson

▸ readJson<T>(host: Tree, path: string, options?: JsonParseOptions): T

Reads a document for host, removes all comments and parses JSON.

Type parameters

Parameters

Returns: T

readJsonFile

▸ readJsonFile<T>(path: string, options?: JsonReadOptions): T

Reads a JSON file and returns the object the JSON content represents.

Type parameters

Parameters

Returns: T

Object the JSON content of the file represents

readProjectConfiguration

▸ readProjectConfiguration(host: Tree, projectName: string): ProjectConfiguration & NxJsonProjectConfiguration

Reads a project configuration.

The project configuration is stored in workspace.json and nx.json. The utility will read both files.

Parameters

Returns: ProjectConfiguration & NxJsonProjectConfiguration

readTargetOptions

▸ readTargetOptions<T>(__namedParameters: Target, context: ExecutorContext): T

Reads and combines options for a given target.

Works as if you invoked the target yourself without passing any command lint overrides.

Type parameters

Parameters

Returns: T

readWorkspaceConfiguration

▸ readWorkspaceConfiguration(host: Tree): WorkspaceConfiguration

Read general workspace configuration such as the default project or cli settings

This does not provide projects configuration, use readProjectConfiguration instead.

Parameters

Returns: WorkspaceConfiguration

removeDependenciesFromPackageJson

▸ removeDependenciesFromPackageJson(host: Tree, dependencies: string[], devDependencies: string[], packageJsonPath?: string): GeneratorCallback

Remove Dependencies and Dev Dependencies from package.json

For example:

1removeDependenciesFromPackageJson(host, ['react'], ['jest']);

This will remove react and jest from the dependencies and devDependencies sections of package.json respectively.

Parameters

Returns: GeneratorCallback

Callback to uninstall dependencies only if necessary. undefined is returned if changes are not necessary.

removeProjectConfiguration

▸ removeProjectConfiguration(host: Tree, projectName: string): void

Removes the configuration of an existing project.

The project configuration is stored in workspace.json and nx.json. The utility will update both files.

Parameters

Returns: void

runExecutor

▸ runExecutor<T>(targetDescription: { configuration?: string ; project: string ; target: string }, options: { [k: string]: any; }, context: ExecutorContext): Promise<AsyncIterableIterator<T>>

Loads and invokes executor.

This is analogous to invoking executor from the terminal, with the exception that the params aren't parsed from the string, but instead provided parsed already.

Apart from that, it works the same way:

• it will load the workspace configuration
• it will resolve the target
• it will load the executor and the schema
• it will load the options for the appropriate configuration
• it will run the validations and will set the default
• and, of course, it will invoke the executor

Example:

1for await (const s of await runExecutor(
2  { project: 'myproj', target: 'serve' },
3  { watch: true },
4  context
5)) {
6  // s.success
7}

Note that the return value is a promise of an iterator, so you need to await before iterating over it.

Type parameters

Parameters

Returns: Promise<AsyncIterableIterator<T>>

serializeJson

▸ serializeJson<T>(input: T, options?: JsonSerializeOptions): string

Serializes the given data to a JSON string. By default the JSON string is formatted with a 2 space intendation to be easy readable.

Type parameters

Parameters

Returns: string

the formatted JSON representation of the object

stripIndents

▸ stripIndents(strings: TemplateStringsArray, ...values: any[]): string

Removes indents, which is useful for printing warning and messages.

Example:

1stripIndents`
2 Options:
3 - option1
4 - option2
5`;

Parameters

Returns: string

stripJsonComments

▸ Const stripJsonComments(text: string, replaceCh?: string): string

Takes JSON with JavaScript-style comments and remove them. Optionally replaces every none-newline character of comments with a replaceCharacter

Parameters

Returns: string

targetToTargetString

▸ targetToTargetString(__namedParameters: Target): string

Returns a string in the format "project:target[:configuration]" for the target

Parameters

Returns: string

toJS

▸ toJS(tree: Tree): void

Rename and transpile any new typescript files created to javascript files

Parameters

Returns: void

updateJson

▸ updateJson<T, U>(host: Tree, path: string, updater: (value: T) => U, options?: JsonParseOptions & JsonSerializeOptions): void

Updates a JSON value to the file system tree

Type parameters

Parameters

Returns: void

updateProjectConfiguration

▸ updateProjectConfiguration(host: Tree, projectName: string, projectConfiguration: ProjectConfiguration & NxJsonProjectConfiguration): void

Updates the configuration of an existing project.

The project configuration is stored in workspace.json and nx.json. The utility will update both files.

Parameters

Returns: void

updateTsConfigsToJs

▸ updateTsConfigsToJs(host: Tree, options: { projectRoot: string }): void

Parameters

Returns: void

updateWorkspaceConfiguration

▸ updateWorkspaceConfiguration(host: Tree, workspaceConfig: WorkspaceConfiguration): void

Update general workspace configuration such as the default project or cli settings.

This does not update projects configuration, use updateProjectConfiguration or addProjectConfiguration instead.

Parameters

Returns: void

visitNotIgnoredFiles

▸ visitNotIgnoredFiles(tree: Tree, dirPath?: string, visitor: (path: string) => void): void

Utility to act on all files in a tree that are not ignored by git.

Parameters

Returns: void

writeJson

▸ writeJson<T>(host: Tree, path: string, value: T, options?: JsonSerializeOptions): void

Writes a JSON value to the file system tree

Type parameters

Parameters

Returns: void

writeJsonFile

▸ writeJsonFile<T>(path: string, data: T, options?: JsonWriteOptions): void

Serializes the given data to JSON and writes it to a file.

Type parameters

Parameters

Returns: void