Message: Class constructor BindingLanguage cannot be invoked without 'new'

[jeffflater]

I'm submitting a bug report
The issues occurs when using "aurelia-framework": "1.2.0" and started when the [email protected] was published.

• Library Version:
  major.minor.patch-pre

Please tell us about your environment:

• Operating System:
  Windows 10

• Node Version:
  v6.10.2

• NPM Version:
  3.10.10

• JSPM OR Webpack AND Version
  JSPM 0.16.32 | webpack 2.1.0-beta.17

• Browser:
  Chrome latest

• Language:
  Javascript

Current behavior:
Binding engine throws error = Message: Class constructor BindingLanguage cannot be invoked without 'new'

Expected/desired behavior:
Binding engine should not throw exception

• What is the expected behavior?

• What is the motivation / use case for changing the behavior?

[bigopon]

@jeffflater This issue is pretty odd. Can you share a bit more about your project?

[StrahilKazlachev]

It's like BindingLanguage is being extended - the subclass being compiled in ES6 and the parent class being in ES5.

[pravl]

@jeffflater @bigopon @jeffflater I am facing the same issue. could anyone tell me what to do ?

[bigopon]

@pj41195 Can you try delete node_modules and package-lock.json, and do a fresh npm install?

[pravl]

@bigopon I tried but still getting the same error message.

[bigopon]

Can you share a reproduction ? @pj41195

[pravl]

"aurelia-framework": 1.2.0
"npm": 6.4.1
[email protected]
[email protected]
[email protected]

These are the version which i am using.

I think it is surely related to some package upgradations. Previously it is working fine but after Jenkins rebuild the project, after that it is throwing an error
@bigopon

[bigopon]

@pj41195 Hey sorry for late reply, have you solved this?

[fkleuver]

@jeffflater @pj41195 Is upgrading to binding 2.x an option?

[pravl]

@jeffflater @bigopon Yes this problem is solved by updating few packages..

"aurelia-fetch-client": "1.4.0",
"aurelia-framework": "1.2.0",
"aurelia-templating": "1.10.0",
"aurelia-templating-binding": "1.4.2",
"aurelia-templating-resources": "1.6.0",
"aurelia-templating-router": "1.3.1",
"aurelia-api": "3.1.1",
"aurelia-binding": "1.7.1",

But it creates another problem for me. IE11 through the error 'webpackJsonp' is undefined
Only IE 11. If you have any idea about this then it would be great for me.

@jeffflater updating binding to 2.x..x did not work for me. use "aurelia-validation": "1.1.2",

[mohammadamini0023]

nakun

[mohammadamini0023]

kir tutun

[bigopon]

@mohammadamini0023 are you having the same issue?