Include assets when building library using ng-packagr

It's an old thread but still updating with a latest options in Feb-2020

With the ng-packagr ^9.0.1 version, You can do this using inbuilt "copy assets"

{
  "ngPackage": {
    "assets": [
      "CHANGELOG.md",
      "./styles/**/*.theme.scss"
    ],
    "lib": {
      ...
    }
  }
}

https://github.com/ng-packagr/ng-packagr/blob/master/docs/copy-assets.md

This has helped me remove the postpackage cp scripts

Adding my actual ng-package.json for benefit of others. I wanted to copy the assets folder and all its contents to the library and publish it along with it.

{
  "$schema": "../../node_modules/ng-packagr/ng-package.schema.json",
  "dest": "../../dist/common",
  "assets": [
    "assets"
  ],
  "lib": {
    "entryFile": "src/public-api.ts",
    "umdModuleIds": {
      "common": "common"
    }
  }
}

The assets folder is in the library root directory. this helps to copy the entire assets folder and the contents inside it and add it to the library, so that you can use it as @include "@node_modules/your-library/assets/styles/main.scss"

There's an official issue for that question here. It's actually quite simple to include images and the like to your library: You can just copy them to the dist folder manually after ng-packagr has done its thing.

However, it's more difficult to automate the extraction of those files in projects that'll use your library. In the issue referenced above BenjaminDobler suggests to add the following mapping to the .angular-cli.json file of any consumer project:

{ "glob": "**/*", "input": "../node_modules/my-lib/assets", "output": "./assets/my-lib/" }

I feel this is more of an NPM issue, though, and there also are bare NPM solutions for it like pkg-assets and npm-assets.

I also got same problem when I packaging using ngPackagr. So I wrote my own small node script to copy them to the dist folder manually.

npm install wrench

create new js file in the root assets-copy.js

var wrench = require("wrench"),
  util = require("util");

var source = "./src/assets";
var target = "./dist/src/assets";

wrench.copyDirSyncRecursive(source, target, {
  forceDelete: true
});

console.log("Asset files successfully copied!");

add build script to package.json like below,I called it as manual:assets-copy

  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "packagr": "ng-packagr -p ng-package.json",
    "assets-copy": "node assets-copy.js"
  }

After you run

npm run packagr

Also run our script

npm run manual:assets-copy

It'll copy them to the dist folder manually.

Try to use "postbuild". It works for me.

on package.json

...
"scripts": {
    ...
    "build": "ng build",
    "postbuild": "cp -R projects/mylib/src/assets dist/mylib/assets",
...

IMPORTANT... when to execute the build uses:

/> npm run build

Then the "postbuild" will execute automatically. It will not execute if you uses only "ng build".