Friday, February 10, 2017

Using external javascript AMD Modules in Angular2 CLI

By Hường Hana 10:30 AM , Leave a Comment

When I was using Angular2 pre-releases I had to use systemjs in order to use external javascript libraries, namely ESRI ArcGIS JavaScript API, which is based on AMD modules (typings are available though).

Now I would like to migrate to Angular2 CLI. However, I fail to see how I can import an external library like arcgis after Angular2 moved from systemjs to webpack and without having a webpack.config file to modify.

The external library is stored under:

<script src="https://js.arcgis.com/3.19/"></script>

Example: In my angular components, I somehow need to be able to import these like:

import map from 'esri/map';

to import 'https://js.arcgis.com/3.19/esri/map.js'

Any idea how this can be accomplished?

Edit: If I add the link to the map.js to the angular-cli.json

"scripts": [           "../node_modules/jquery/dist/jquery.js",            ....           "https://js.arcgis.com/3.19/esri/map.js"       ],

and import it as import {map} from 'esri/map';

I'm getting a webpackMissingModule: C:\Users\xy\project\src\https:\js.arcgis.com\3.19\esri\map.j‌​s

3 Answers

Answers 1

the sample angular-cli.json for including external libraries sorry for dump data but this is a hint as you can see i added scripts and css in styles and scripts and addons array in angular-cli.json

{   "project": {     "version": "1.0.0-beta.19-3",     "name": "adm"   },   "apps": [     {       "root": "src",       "outDir": "dist",       "assets": [         "assets",         "favicon.ico"       ],       "index": "index.html",       "main": "main.ts",       "test": "test.ts",       "tsconfig": "tsconfig.json",       "prefix": "app",       "mobile": false,       "styles": [         "assets/lib/bootstrap/css/bootstrap.css",         "../node_modules/font-awesome/css/font-awesome.css",         "assets/lib/metismenu/metisMenu.css",         "assets/lib/animate.css/animate.css",         "assets/css/customradiocss.css",         "rainbow/blackboard.css"       ],       "scripts": [           "assets/lib/jquery/jquery.js",           "assets/lib/bootstrap/js/bootstrap.js",           "assets/lib/metismenu/metisMenu.js",           "assets/lib/screenfull/screenfull.js",           "assets/js/core.js",           "assets/js/app.js",           "assets/js/easyResponsiveTabs.js",           "rainbow/rainbow-custom.min.js"       ],       "environments": {         "source": "environments/environment.ts",         "dev": "environments/environment.ts",         "prod": "environments/environment.prod.ts"       }     }   ],   "addons": ["../node_modules/font-awesome/fonts/*.+(otf|eot|svg|ttf|woff|woff2)"],   "packages": [],   "e2e": {     "protractor": {       "config": "./protractor.conf.js"     }   },   "test": {     "karma": {       "config": "./karma.conf.js"     }   },   "defaults": {     "styleExt": "css",     "prefixInterfaces": false,     "inline": {       "style": false,       "template": false     },     "spec": {       "class": false,       "component": true,       "directive": true,       "module": false,       "pipe": true,       "service": true     }   } }

Answers 2

You can do this in one of two ways:

  1. Import the script inside your index.html, then in your component, declare the API entry point as a constant:

    const argGIS: any;

Then use it as any other place you have used it. You will have no intelli-sense support but it will work.

  1. Use a npm module, it looks like one exists. Install it with:

    npm install arcgis --save

Add it to your "scripts" in angular-cli.json

"../node_modules/arcgis/file.js"

Look at the index.d.ts file to find what to import and import it in your component with:

import {Something} from 'arcgis';

Answers 3

An option would be, to import it in the main index html-file.

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