Using invalid environment causes error in build (was "ERROR in Cannot read property 'length' of undefined")

[elvisbegovic]

(on existing project, on windows10) After updating :

1. cli 31 to rc0
2. angular packages to rc1
3. typescript to 2.1.6

I get this insignifiant message error when running ng serve or ng build:

Cannot read property 'length' of undefined
TypeError: Cannot read property 'length' of undefined

What does this mean ?

[deebloo]

@istiti can you fill out the issue template and give the steps to reproduce? What version of the cli are you updating from?

[elvisbegovic]

@deebloo please apologize see point 1 again.
I have no additional info:

Cannot read property 'length' of undefined
TypeError: Cannot read property 'length' of undefined
    at createSourceFile (C:\Users\.....\node_modules\typescript\lib\typescript.js:14552:109)
    at parseSourceFileWorker (C:\Users\.....\node_modules\typescript\lib\typescript.js:14484:26)
    at Object.parseSourceFile (C:\Users\.....\node_modules\typescript\lib\typescript.js:14433:26)
    at Object.createSourceFile (C:\Users\.....\node_modules\typescript\lib\typescript.js:14288:29)
    at WebpackCompilerHost.getSourceFile (C:\Users\.....\node_modules\@ngtools\webpack\src\compiler_host.js:210:27)
    at findSourceFile (C:\Users\.....\node_modules\typescript\lib\typescript.js:63453:29)
    at processSourceFile (C:\Users\.....\node_modules\typescript\lib\typescript.js:63384:27)
    at C:\Users\.....\node_modules\typescript\lib\typescript.js:63494:17
    at Object.forEach (C:\Users\.....\node_modules\typescript\lib\typescript.js:1293:30)
    at processReferencedFiles (C:\Users\.....\node_modules\typescript\lib\typescript.js:63492:16)
    at findSourceFile (C:\Users\.....\node_modules\typescript\lib\typescript.js:63477:21)
    at processImportedModules (C:\Users\.....\node_modules\typescript\lib\typescript.js:63600:25)
    at findSourceFile (C:\Users\.....\node_modules\typescript\lib\typescript.js:63481:17)
    at processSourceFile (C:\Users\.....\node_modules\typescript\lib\typescript.js:63384:27)
    at processRootFile (C:\Users\.....\node_modules\typescript\lib\typescript.js:63271:13)
    at C:\Users\.....\node_modules\typescript\lib\typescript.js:62620:60
    at Object.forEach (C:\Users\.....\node_modules\typescript\lib\typescript.js:1293:30)
    at Object.createProgram (C:\Users\.....\node_modules\typescript\lib\typescript.js:62620:16)
    at AotPlugin._setupOptions (C:\Users\.....\node_modules\@ngtools\webpack\src\plugin.js:124:28)
    at new AotPlugin (C:\Users\.....\node_modules\@ngtools\webpack\src\plugin.js:23:14)
    at _createAotPlugin (C:\Users\.....\node_modules\@angular\cli\models\webpack-configs\typescript.js:55:12)
    at Object.exports.getNonAotConfig (C:\Users\.....\node_modules\@angular\cli\models\webpack-configs\typescript.js:70:19)
    at NgCliWebpackConfig.buildConfig (C:\Users\.....\node_modules\@angular\cli\models\webpack-config.js:27:37)
    at Class.run (C:\Users\.....\node_modules\@angular\cli\tasks\serve.js:37:98)
    at check_port_1.checkPort.then.port (C:\Users\.....\node_modules\@angular\cli\commands\serve.js:103:26)
    at process._tickCallback (internal/process/next_tick.js:103:7)

[dmytro-y-dev]

@istiti Did you use ng new to create the project?

If so, make sure that you kept all original arrays in .angular-cli.json configuration like assets, styles and scripts. I received mistake as you do, because I removed assets option from .angular-cli.json.

[elvisbegovic]

@metamaker no I don't use ng new I have assets styles and scripts as array.
I try on exisiting project running angular 2.4.8 ith cli31 to update to cli-rc0 and angular rc1 !

[dmytro-y-dev]

Provide your .angular-cli.json, please.

[elvisbegovic]

https://gist.github.com/istiti/e544744f16480829416e62b32167051e

ps: when running ng new test --ng4 it works... but I want get working again my existing project

[dmytro-y-dev]

Your .angular-cli.json looks ok, not sure what is wrong. Maybe someone else will be able to help you ;) .

[elvisbegovic]

additional info :
I tried in green project "ng new mynewproject --ng4" it work well, it run!

then move all my old /app folder to this new one and I get same error !

apparently the issue is in my code/module ... My project is relativly big I can't remove module by module :(

how achieve this ? can I get more signifiant message error

thanks

[hansl]

This is a real issue and we will look at it.

[elvisbegovic]

Additionals infos:
Yes of course I always use Renderer and template in my project.. but need more signifiant message error to achieve this properlly.

Thanks, actually can't move...

Cc @hansl

[hansl]

@isiti can you provide a repository or some sort of code sample that we could use to reproduce? Maybe your package.json might be enough, if you're okay to share that.

[elvisbegovic]

Will do it tomorrow at 7AM (UTC +1)

Thanks coz can't move (actually blocked)

@hansl

[trentmswanson]

I was experiencing the same issue here and after I rolled typescript back from 2.2.1 to 2.0.10 that seemed to fix it.