@angular-devkit/core
Advanced tools
Package description
The @angular-devkit/core package is a fundamental part of the Angular DevKit which provides utility functions and an abstraction layer for managing file systems and other common tasks needed in the development of Angular applications. It is designed to be used by the Angular CLI and other tools to enhance and streamline the development process.
Virtual File System
Allows manipulation of file systems in memory, which is useful for testing and build processes without affecting the actual file system.
{"import { virtualFs, HostTree } from '@angular-devkit/core';\nconst host = new HostTree();\nhost.create('/hello', 'world');\nconst exists = host.exists('/hello');\nconsole.log(exists); // true"}Workspace Configuration
Provides utilities to read and manipulate Angular workspace configuration, enabling tools and scripts to modify project settings programmatically.
{"import { workspaces } from '@angular-devkit/core';\nasync function getWorkspace() {\n const workspaceHost = workspaces.createWorkspaceHost(host);\n const { workspace } = await workspaces.readWorkspace('/', workspaceHost);\n console.log(workspace.projects.get('my-app'));\n}"}Schematics
Supports the creation and execution of schematics which are templates used to generate or transform projects. This feature is crucial for extending the Angular CLI's capabilities.
{"import { SchematicContext, Tree, Rule } from '@angular-devkit/schematics';\nfunction mySchematic(_options: any): Rule {\n return (tree: Tree, _context: SchematicContext) => {\n tree.create('hello.txt', 'Hello World');\n return tree;\n };\n}"}Similar to the schematics functionality of @angular-devkit/core, Yeoman generators allow the creation of projects or parts of projects through templates. However, Yeoman is more generic and not Angular-specific.
Provides extended functionality for the Node.js file system module, similar to the virtual file system capabilities of @angular-devkit/core, but operates on the actual file system rather than a virtual one.
While primarily a module bundler, webpack offers a rich plugin interface that can perform similar tasks to those of @angular-devkit/core, such as manipulating files and project assets. However, it is more focused on the build process rather than project scaffolding or configuration.
Readme
Shared utilities for Angular DevKit.
export interface SchemaValidatorResult {
success: boolean;
errors?: string[];
}
export interface SchemaValidator {
(data: any): Observable<SchemaValidatorResult>;
}
export interface SchemaFormatter {
readonly async: boolean;
validate(data: any): boolean | Observable<boolean>;
}
export interface SchemaRegistry {
compile(schema: Object): Observable<SchemaValidator>;
addFormat(name: string, formatter: SchemaFormatter): void;
}
SchemaRegistry implementation using https://github.com/epoberezkin/ajv.
Constructor accepts object containing SchemaFormatter that will be added automatically.
export class CoreSchemaRegistry implements SchemaRegistry {
constructor(formats: { [name: string]: SchemaFormatter} = {}) {}
}
FAQs
Angular DevKit - Core Utility Library
We found that @angular-devkit/core demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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