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@nrwl/devkit

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@nrwl/devkit

The Nx Devkit is used to customize Nx for different technologies and use cases. It contains many utility functions for reading and writing files, updating configuration, working with Abstract Syntax Trees(ASTs), and more. Learn more about [extending Nx by


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Package description

What is @nrwl/devkit?

The @nrwl/devkit package is a set of utilities designed to improve the developer experience by providing tools for building, testing, and managing Angular and React projects within a monorepo setup. It is part of the Nx ecosystem, which focuses on bringing a unified approach to working with modern web technologies.

What are @nrwl/devkit's main functionalities?

Generating Components

This feature allows developers to programmatically generate components or other files within their project. The code sample demonstrates how to use the `generateFiles` function to create a new component in a library within the monorepo.

import { generateFiles } from '@nrwl/devkit';
function generateMyComponent(tree, schema) {
  generateFiles(tree, path.join(__dirname, './files'), '/libs/mylib/src/lib', {
    tmpl: '',
    name: schema.name
  });
}

Updating JSON Configuration

This feature provides a straightforward way to update JSON files, such as `tsconfig.json` or `.eslintrc.json`, programmatically. The code sample shows how to modify the `tsconfig.base.json` to add a new path mapping for a library.

import { updateJson } from '@nrwl/devkit';
function updateTsConfig(tree) {
  updateJson(tree, 'tsconfig.base.json', (json) => {
    json.compilerOptions.paths['@myorg/mylib'] = ['libs/mylib/src/index.ts'];
    return json;
  });
}

Executing Schematic Tasks

This feature enables developers to execute tasks such as adding project configurations or formatting files. The code sample illustrates how to add a new library configuration to the workspace and then format all files according to the workspace's prettier or eslint configurations.

import { addProjectConfiguration, Tree, formatFiles } from '@nrwl/devkit';
function addMyLib(tree: Tree) {
  addProjectConfiguration(tree, 'my-lib', {
    root: './libs/my-lib',
    projectType: 'library',
    targets: {},
  });
  formatFiles(tree);
}

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Last updated on 28 Mar 2024

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