To link a local library into an Angular 5 project, you can follow these steps:

  1. Create the Local Library: First, create the library you want to link to your Angular project. You can use the Angular CLI to generate a new library project. Open a terminal and run the following command:
ng generate library my-library

This will create a new library project with the name "my-library" in the projects folder of your Angular workspace.

  1. Build the Local Library: Next, build the library to generate the distributable files. In the root of your Angular workspace, run:
ng build my-library

This will create the built library files inside the dist folder of your Angular workspace.

  1. Link the Local Library: Now, you need to link the local library to your Angular project. There are two main approaches to do this:

    a. npm link (recommended): Navigate to the dist folder of your library:

    cd dist/my-library

    Create a symlink for the library using npm link:

    npm link

    Now, go back to the root of your Angular project and link the library using npm link:

    cd ../../ npm link my-library

    b. File Path (not recommended for production): If you don't want to use npm link, you can directly reference the library from your Angular project's package.json using a file path. In your Angular project's package.json, add the following:

    "dependencies": { "my-library": "file:../path/to/your/library/dist/my-library" }

    Replace ../path/to/your/library with the actual path to your library.

  2. Import and Use the Local Library: Now that your local library is linked, you can import and use its components, services, or modules in your Angular project. Import the modules, components, or services from your library as needed in your application's code.

Remember to run ng serve for your Angular project and ng build my-library whenever you make changes to your library to see the updated results in your application.

Please note that linking a local library is primarily used for development purposes. For production builds, you should publish the library to an npm registry and install it as a regular npm dependency in your Angular project.

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