Mike Coxeter Mike Coxeter - 25 days ago 12
TypeScript Question

Simple Example Using Angular 1 with TypeScript and SystemJS

I have been trying to convert a TypeScript Angular 1 application to use ES6 style module imports.

Dropping the use of namespace and using the import keyword to pull in modules. e.g.

import * as angular from "angular";
import * as angularroute from "angular-route";


But I have run into some issues.
I'm getting an error from angular:

Uncaught (in promise) Error: (SystemJS) [$injector:modulerr] Failed to instantiate module testApp due to:

Error: [$injector:modulerr] Failed to instantiate module ngRoute due to:

Error: [$injector:nomod] Module 'ngRoute' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument


To illustrate the issue, I have created two applications on github:

1) Angular1WithNamespaces- Original app that I want to convert.

2) Angular1WithSystemJS - My Conversion, that has an issue.

Below are snippets from the Angular1WithSystemJS example that has the issue.

index.html



<!DOCTYPE html>
<html lang="en" ng-app="testApp">
<head><base href="/"></head>
<body >
<ng-view></ng-view>
<script src="node_modules/systemjs/dist/system.js"></script>
<script src="configs/systemjs.config.js"></script>
<script>
System.import('app/boot');
</script>
</body>
</html>





systemjs.config.js


System.config({
defaultJSExtensions: true,

paths: {
"npm:*": "../node_modules/*"
},
// map tells the System loader where to look for things
map: {
"angular": "npm:angular/angular.js",
"angular-route": "npm:angular-route/angular-route.js",
},
meta: {
'angular': {
format: 'global',
},
'angular-route': {
format: 'global',
},
}
});





boot.ts



/// <reference path="../typings/tsd.d.ts" />
import * as angular from "angular";
import * as angularroute from "angular-route";

let main = angular.module("testApp", ["ngRoute"]);

main.config(routeConfig)

routeConfig.$inject = ["$routeProvider"];
function routeConfig($routeProvider: angular.route.IRouteProvider): void {
$routeProvider
.when("/dashboard", {
templateUrl: "/app/dashboard.html",
})
.otherwise("/dashboard");
}





Any help getting this working would be greatly appreciated.

Answer

I have found a solution by reading a blog post from https://legacy-to-the-edge.com/2015/01/21/using-es6-with-your-angularjs-project/

It was related to how I did the import for angular-route. In the end it was just a one-liner change.
In boot.ts I changed the import statement from:

import * as angularroute from "angular-route";

to:

import "angular-route";

I can only assume, that the latter will also run scripts in the module file.
According to the spec on import at developer.mozilla.org

import "my-module";
Import an entire module for side effects only, without importing any bindings.

The fixed version is in github Angular1WithSystemJSFixed

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