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  • Jul 26 20:47
    josundt commented #190
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    elitastic commented #175
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    bigopon commented #190
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    bigopon on 5.0.1


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scroll down a bit to the with interceptors section
no worries :smile:

@bigopon I am still getting the error, even when I change to config.mapUnknownRoutes

I am unsure where the reference to '/' is being found at, as that seems what I need to fix?

yes, you need to replace / with a module name, pointing to the view model you want to use to display when route not found happens

here is what i have now:

```export class App {
configureRouter( config, router )
config.title = 'ARIS';
config.options.pushState = true;
config.options.root = 'home';

  {route: '', name: 'home', moduleId: PLATFORM.moduleName('home'), nav: true, title: 'home'},
  {route: 'search', moduleId: PLATFORM.moduleName('search'), nav: true, 
    title: 'Search/Worklist'},

this.router = router;


and i am still getting the error, so i am confused as to what i need to actually change.

Hello, I have a app generated by cli, which have nav-bar.html, this is html only element, now I want to add a login button to it but want the event to be delegated to app.ts, how I can do it ? Thanks
i figured out my problem. i am using aurelia-authentication, and something about how i am calling the app or the login module to show was breaking things. when i commented out that line, it loads again.
what does this error mean?
Error: Unable to find module with ID: app
    at WebpackLoader.eval (aurelia-loader-webpack.js?e63c:197)
    at step (aurelia-loader-webpack.js?e63c:41)
    at Object.eval [as next] (aurelia-loader-webpack.js?e63c:22)
    at eval (aurelia-loader-webpack.js?e63c:16)
    at new Promise (<anonymous>)
    at __awaiter (aurelia-loader-webpack.js?e63c:12)
    at WebpackLoader._import (aurelia-loader-webpack.js?e63c:162)
    at WebpackLoader.eval (aurelia-loader-webpack.js?e63c:262)
    at step (aurelia-loader-webpack.js?e63c:41)
    at Object.eval [as next] (aurelia-loader-webpack.js?e63c:22)

if i change the line in main.js to this:

aurelia.start().then(() => aurelia.setRoot(PLATFORM.moduleName('app')));

i get the following error, and it appears to be complaining still about app?

aurelia-logging-console.js?dc89:45 ERROR [app-router] Error: Error invoking Home. Check the inner error for details.
Inner Error:
Message: key/value cannot be null or undefined. Are you trying to inject/register something that doesn't exist with DI?
Inner Error Stack:
Error: key/value cannot be null or undefined. Are you trying to inject/register something that doesn't exist with DI?
    at validateKey (webpack-internal:///3U8n:373:15)
    at Container.get (webpack-internal:///3U8n:512:9)
    at eval (webpack-internal:///3U8n:415:68)
    at Array.map (<anonymous>)
    at Object.invoke (webpack-internal:///3U8n:415:30)
    at InvocationHandler.invoke (webpack-internal:///3U8n:389:28)
    at Container.invoke (webpack-internal:///3U8n:575:28)
    at StrategyResolver.get (webpack-internal:///3U8n:133:39)
    at Container.get (webpack-internal:///3U8n:530:28)
    at eval (webpack-internal:///hij8:4962:71)
End Inner Error Stack

i can't find where the message is being generated so that i can figure out what the call is that is breaking things.

@rhysshadow in your Home class there is something in the that is being injected / constructor that it can't find.
@Meakeel thanks - i just found it! thanks for the help.
16 oh4
hello everyone, I am new to aurelia. is there a way to use the {...OBJECT} spread operator inside a ${} template? couldn't find an answer anywhere

I am trying to use AJAX to get info from the database. I have set up login.pl and login. js, but all that happens is a reload of the page.

Here's my login.js -> login function:

login() {
        if ( this.username && this.password ) 
                type: "GET",
                url: "login.pl", // URL of the Perl script
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                // send username and password as parameters to the Perl script
                data: "username=" + username + "&password=" + password,
                // script call was *not* successful
                error: function(XMLHttpRequest, textStatus, errorThrown) { 
                  $('div#loginResult').text("responseText: " + XMLHttpRequest.responseText 
                    + ", textStatus: " + textStatus 
                    + ", errorThrown: " + errorThrown);
                }, // error 
                // script call was successful 
                // data contains the JSON values returned by the Perl script
                success: function(data){
                  if (data.error) { // script returned error
                    $('div#loginResult').text("data.error: " + data.error);
                  } // if
                  else { // login was successful
                    $('div#loginResult').text("data.success: " + data.success 
                      + ", data.userid: " + data.userid);
                  } //else
                } // success
              }); // ajax
            } // if
            else {
              $('div#loginResult').text("enter username and password");
            } // else
            return false;


now that i have ajax working, i'm getting an error in the console:

GET http://[localhost]:8080/login.pl?username=[object%20HTMLInputElement]&password=[object%20HTMLInputElement] 404 (Not Found)

my directory structure is:


i have tried in the url field:


all give me the same 404 errors.

do i need to configure a route for this script? and if so, how do i go about doing that?

Khuzema Kanore

Hello guys,
I am trying to integrate aurelia app with Identityserver4. The issue arise with the redirecturi. I have simple page as callback as below -

  <h1>${'Hello redirector'}</h1>
export class Callback {
  // private _userManager: UserManager;

So after the login when Identityserver redirects to callback.html its give error : Cannot GET /callback.html.
I have also tried and defined route

        route: "child-router",
        name: "child-router",
        moduleId: "./child-router",
        nav: true,
        title: "Child Router",

anyone have some inputs please let me know

Hello all :) -- Am wondering if au CLI helps with Aurelia 2 apps?

:point_up: February 13, 2018 1:54 AM
@weoreference, and until we get scoped CSS in the browsers, we’ll have to continue doing what @MaximBalaganskiy does.
We use in the html the <require from=‘./custom.css’> approach though, keeping markup concerns in markup files.

@AStoker Thank you for letting me know

Arch Enemy
@rhys hey, I recommend you use python instead of perl (unless you have little choice).... Also I wouldn't recommend using jquery , aurelia has an http-client
What's the potential of Aurelia2 simplifying the whole router + router-child processes ?
Looking forward for the next blog post. Hopefully with good news about Aurelia 2!
We have been using Aurelia since alpha, and are very pleased with the result. We got some big apps ready to migrate to Aurelia 2. I believe Aurelia 2 will be a great upgrade, and am very excited about any progress :D
My biggest concern is @EisenbergEffect being too busy with fast-dna or other Microsoft projects, putting Aurelia 2 on a hold

@_ArchEnemy__gitlab yeah, i don't have a choice using perl, it's native to what i'm trying to move from an old perl/html mashup app to a new SPA.

i will try the http-client and see if that helps.


@_ArchEnemy__gitlab - i am trying the fetch-client, but i still get a 404 error on the login.pl

here's the code for the fetch client:

import {HttpClient, json} from 'aurelia-fetch-client';
//import { responseTypeTransformer } from 'aurelia-http-client';

let httpClient = new HttpClient();

export class Login {
    constructor() {
        this.loginResponse = null;

    heading = 'Login';

    username    = '';
    password = '';

    login() {

        if ( this.username && this.password )
            var params = '?username=' + this.username + '&password=' + this.password;
            var url = 'login.pl' + params;

                .then( response => response.json())
                .then(data => {

my dir structure:



i also tried to configure the httpClient as follows:

httpClient.configure(config => {
                credentials: 'same-origin',
                headers: {
                  'Accept': 'application/json',
                  'X-Requested-With': 'Fetch'

i've done the baseUrl with 'src/' and the '/' shown above. both give me the 404 error.


and configuring BaseUrl with the actual 'http://[localhost]:8080/' also gives the 404 error.

i feel like i am missing something basic that sets up where aurelia is looking for files?

@16oh4_gitlab hey at the moment, spread syntax is not supported in the template
1 reply
there was a PR to handlle it here aurelia/binding#647 though it was dismissed as we there were at least 2 downsides (perf, quirks) and only 1 upside (syntax)
@rhysshadow what is the error?
btw, we are trying to migrate the community over discord here https://discord.gg/RBtyM6u and discourse here https://discourse.aurelia.io/
so you will get answers a lot faster there

@bigopon the error i get is the basic 404 - file not found. and it gives the url as: http://[localhost]:8080/login.pl, which is accurate.

and which place is best to ask my question? the discord server or the discourse?

@rhysshadow both
it's just about how you would get an answer the fastest way
Andreas Bernard

Is there a way to bind to as-element? So frex instead of going:

<div as-element="title-listing" if.bind="type === 'title' && listing" listing.bind="listing"></div>
<div as-element="underlined-listing" if.bind="type === 'underlined' && listing" listing.bind="listing"></div>


<div as-element.bind="type" listing.bind="listing"></div> ?


In angular you can write

this.router.navigate(['/'], {replaceUrl: true});

how we write in Aurelia ?

Hi everyone, I'm looking for a part-time aurelia programmer to do occasional pair-programming with me, paid on a daily rate depending on experience and ability to achieve the objectives. I'm hoping for someone with experience to match the $100-$200/day rate. The aurelia programmer will work on the website front end whilst I take care of corresponding backend code (c#). We would work together on screenshare. The application we're building is a trading platform. If you know of anybody who would like to do this, please email me at bboyle1234@gmail.com. Thank you :)
1 reply
Arne Deruwe
@bboyle1234 what timezone/country?
Gerald Gayowsky
Is it possible to watch for changes on a specific item of an array?
e.g. computedFrom('array.0') or computedFrom('array[0]')
@ggayowsky not at the moment, though maybe i can create a plugin for it

This morning I have an error and can't run my app. So I updated node and also tried with a new app but get this error:

PS C:\DevTest\Aurelia\test13> au run
Local aurelia-cli v1.3.1
Starting 'readProjectConfiguration'...
INFO [Bundle] Manually adding package: 2.3.3 aurelia-bootstrapper
INFO [Bundle] Manually adding package: 1.2.1 aurelia-loader-default
INFO [Bundle] Manually adding package: 1.8.1 aurelia-pal-browser
INFO [Bundle] Manually adding package: 1.0.0 aurelia-testing
INFO [Bundle] Manually adding package: 2.0.16 text
Finished 'readProjectConfiguration'
Starting 'processMarkup'...
Starting 'processJson'...
Starting 'processCSS'...
Starting 'copyFiles'...
Starting 'configureEnvironment'...
Finished 'copyFiles'
Finished 'processJson'
Finished 'processCSS'
Finished 'processMarkup'
Finished 'configureEnvironment'
Starting 'buildTypeScript'...
Finished 'buildTypeScript'
Starting 'writeBundles'...
INFO [Bundler] Tracing files ...
INFO [Bundler] Auto tracing package: 1.0.3 aurelia-event-aggregator
INFO [Bundler] Auto tracing package: 1.3.1 aurelia-framework
INFO [Bundler] Auto tracing package: 1.4.0 aurelia-history-browser
INFO [Bundler] Auto tracing package: 1.0.2 aurelia-loader
INFO [Bundler] Auto tracing package: 1.1.1 aurelia-logging-console
INFO [Bundler] Auto tracing package: 1.0.6 aurelia-metadata
INFO [Bundler] Auto tracing package: 1.8.2 aurelia-pal
INFO [Bundler] Auto tracing package: 1.3.4 aurelia-polyfills
INFO [Bundler] Auto tracing package: 1.5.3 aurelia-templating-binding
INFO [Bundler] Auto tracing package: 1.13.0 aurelia-templating-resources
INFO [Bundler] Auto tracing package: 1.4.0 aurelia-templating-router
INFO [Bundler] Auto tracing package: 2.5.4 aurelia-binding
INFO [Bundler] Auto tracing package: 1.5.2 aurelia-dependency-injection
INFO [Bundler] Auto tracing package: 1.2.1 aurelia-history
INFO [Bundler] Auto tracing package: 1.5.2 aurelia-logging
INFO [Bundler] Auto tracing package: 1.1.5 aurelia-path
INFO [Bundler] Auto tracing package: 1.7.1 aurelia-router
INFO [Bundler] Auto tracing package: 1.3.3 aurelia-task-queue
INFO [Bundler] Auto tracing package: 1.10.3 aurelia-templating
INFO [Bundler] Auto tracing package: 1.3.2 aurelia-route-recognizer
INFO [Bundle] Writing app-bundle.js...
INFO [Bundle] Writing vendor-bundle.js...
Finished 'writeBundles'
Application Available At: http://localhost:9000
BrowserSync Available At: http://localhost:3001
throw er; // Unhandled 'error' event

Error: listen EACCES: permission denied
at Server.setupListenHandle [as _listen2] (net.js:1296:21)
at listenInCluster (net.js:1361:12)
at Server.listen (net.js:1449:7)
at Object.startServer [as fn] (C:\DevTest\Aurelia\test13\node_modules\browser-sync-ui\lib\async.js:123:39)
at C:\DevTest\Aurelia\test13\node_modules\browser-sync-ui\lib\UI.js:184:14
at iterate (C:\DevTest\Aurelia\test13\node_modules\async-each-series\index.js:8:5)
at C:\DevTest\Aurelia\test13\node_modules\async-each-series\index.js:16:16
at C:\DevTest\Aurelia\test13\node_modules\browser-sync-ui\lib\UI.js:192:13
at Object.setUrlOptions [as fn] (C:\DevTest\Aurelia\test13\node_modules\browser-sync-ui\lib\async.js:76:9)
at C:\DevTest\Aurelia\test13\node_modules\browser-sync-ui\lib\UI.js:184:14
Emitted 'error' event on Domain instance at:
at Server.EventEmitter.emit (domain.js:500:12)
at emitErrorNT (net.js:1340:8)
at processTicksAndRejections (internal/process/task_queues.js:84:21) {
code: 'EACCES',
errno: 'EACCES',
syscall: 'listen',
address: '',
port: 3001,
domainEmitter: Server {
insecureHTTPParser: undefined,
_events: [Object: null prototype] {
request: [Function],
connection: [Array]
_eventsCount: 2,
_maxListeners: undefined,
_connections: 0,
_handle: null,
_usingWorkers: false,
_workers: [],
_unref: false,
allowHalfOpen: true,
pauseOnConnect: false,

tpAllowHalfOpen: false,
timeout: 120000,
keepAliveTimeout: 5000,
maxHeadersCount: null,
headersTimeout: 40000,
destroy: [Function],
[Symbol(IncomingMessage)]: [Function: IncomingMessage],
[Symbol(ServerResponse)]: [Function: ServerResponse],

[Symbol(kCapture)]: false,
[Symbol(asyncId)]: -1

domainThrown: false

Arne Deruwe
@TonyLugg I gave up on finding the permission denied thing, something is preventing your 3001 port to be used
The -by far- easiest solution is to just change the browsersync UI port number to something else:
1: open run.ts in aurelia_projects/tasks
let serve = gulp.series(build, done => {
            ui: {                                    //  <===
                port: 8080,             // <=== your preference
            },                                        // <===
            online: false,
            open: CLIOptions.hasFlag("open") || project.platform.open,
most of the stuff you find online points to docker as the culprit, suggesting disabling it, but I need Docker, so.. :p
Is there a room for Aurelia2 questions? I want to try the new Aurelia2 but having some issues with configuring routers. Can't find a good example of how to do it.
@corneliutusnea you cna use both discord and discourse
we are trying to migrate the community over discord here https://discord.gg/RBtyM6u and discourse here https://discourse.aurelia.io/