ionic-packagedkaty
An Ionic project
Last updated a year ago by katyelen .
Original npm · Tarball · package.json
$ cnpm install ionic-packagedkaty 
SYNC missed versions from official npm registry.

Packaging Ionic libraries with ng-packagr

This repository is an example of how to set-up an Ionic project to contain and build libraries that meets the Angular Package Format specification.

It features the @my/lib library package. @my/lib is packaged with ng-packagr and then imported into the Ionic app.

The Ionic app will act as a sandbox where we could test out our components before we package them.

Summary

  1. How this repo was created
  2. Creating your first library
  3. Building your library

How this repo was created

First things first. All credits belong to dherges and his ng-packaged sample. I've only adapted it to Ionic.

So, let's go...

Create an empty Ionic project

$ ionic start ionic-packaged blank

Install the ng-packagr library as dev dependency

$ npm install --save-dev ng-packagr

Install also rimraf (We will use it to delete the build output folder before building the library)

$ npm install --save-dev rimraf

Create the library folder

Create a folder called libs at the project root level with the next structure:

libs
├── .browserslistrc
├── package.json
└── src
    ├── lib.module.ts
    └── public_api.ts

This is enough for now. later on we will define the content of each file.

Add Build Script

In root package.json add the build script for your libraries:

{
  "scripts": {
    "build:lib": "rimraf dist && ng-packagr -p libs/package.json",
  }
}

As you may have guessed, the build output folder is dist.

Configure the Ionic app to act as a Sandbox

In order to use the Ionic app as a sandbox we need to apply some changes to the default Ionic config.

Modify your tsconfig.json and map the typescript import path for your library. It should looks like this:

{
  "compilerOptions": {
    "baseUrl": ".",
    "allowSyntheticDefaultImports": true,
    "declaration": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "lib": [
      "dom",
      "es2015"
    ],
    "paths": {
      "@my/lib": [ "dist/libs" ]
    },
    "module": "es2015",
    "moduleResolution": "node",
    "sourceMap": true,
    "target": "es5"
  },
  "include": [
    "src/**/*.ts"
  ],
  "exclude": [
    ".ng_build",
    "node_modules",
    "src/**/*.spec.ts",
    "src/**/__tests__/*.ts"
  ],
  "compileOnSave": false,
  "atom": {
    "rewriteTsconfig": false
  }
}

Now, we need to override the Ionic Webpack config.

Create a new folder called config at the root level of your Ionic project. Then add a webpack.config.js file with the next content.

const { join } = require('path');
const webpackMerge = require('webpack-merge');
const { dev, prod } = require('@ionic/app-scripts/config/webpack.config');

const customConfig = {
  resolve: {
    alias: {
      "@my/lib": join(__dirname, '../dist/libs'),
    }
  }
};

module.exports = {
  dev: webpackMerge(dev, customConfig),
  prod: webpackMerge(prod, customConfig),
};

Note we are requering webpack-merge to apply the changes to webpack. So you'll need to install it as a dev dependency.

$ npm install --save-dev webpack-merge

And the last step, tell Ionic to use the new webpack config. In root package.json add the next config:

{
  "config": {
    "ionic_webpack": "./config/webpack.config.js"
  },

Create the library folder

It's time to back to the libs folder to add content to every file in.

libs
├── .browserslistrc
├── package.json
└── src
    ├── lib.module.ts
    └── public_api.ts
  • package.json
{
    "name": "@my/lib",
    "version": "1.0.0-alpha.0",
    "repository": "https://github.com/datencia/ionic-packaged.git",
    "author": "David Atencia <david.atencia@gmail.com>",
    "license": "MIT",
    "private": true,
    "peerDependencies": {
      "@angular/core": ">=5.2.10",
      "@angular/common": ">=5.2.10",
      "ionic-angular": "3.9.2"
    },
    "ngPackage": {
      "$schema": "./node_modules/ng-packagr/ng-package.schema.json",
      "lib": {
        "entryFile": "src/public_api.ts"
      },
      "dest": "../dist/libs"
    }
  }

  • lib.module.ts
import { NgModule, ModuleWithProviders } from '@angular/core';
import { CommonModule } from '@angular/common';
import { IonicModule } from 'ionic-angular';

@NgModule({
    imports: [
        CommonModule,
        IonicModule,
    ],
    declarations: [
        // The component, directive and pipe classes that belong to this module.
    ],
    exports: [
        // A list of declarations — component, directive, and pipe classes — that an importing module can use.
    ]
})
export class MyLibModule {
    public static forRoot(): ModuleWithProviders {
        return {
            ngModule: MyLibModule,
            providers: [
                // A list of dependency injection providers.
            ]
        };
    }
}
  • .browserslistrc
last 2 Chrome versions
iOS > 10
Safari > 10

browserslist determines which browser versions should be supported.

  • public_api.ts

This file is the entry point to your library.

It should export all your components, services, pipes, etc.

Right now you can leave it empty

Creating your first library

Now you are ready to start coding your library.

TODO

Building your library

To build your library just run:

$ npm run build:lib

The build output is written to the dist folder, containing all those binaries to meet the Angular Package Format specification.

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