Angular-cli: Webpack build system upgrade tracker

Created on 15 Jul 2016  ยท  87Comments  ยท  Source: angular/angular-cli

Remaining action items:

Things to investigate:

Most helpful comment

Thanks everyone. This issue is now closed as the WebPack branch is merged. If you have build issues, please create separate issues on github instead of refering to this.

A NPM package will be published sometime this week with this. It will use a separate dist-tag, probably named webpack.

I want to specially thank @TheLarkInn and @filipesilva for their work on this. Without you, it's clear we'd still be using Broccoli. Good work to both of you!

All 87 comments

I would love to help with this. Is there more detail on these action items?

Me too. Right now, I have to mix&match angular-cli with my webpack config. I would like to help in order to get this feature released

Hi @RobCannon and @cortopy, we already have some people assigned to these and are working on getting them done as fast as possible.

I don't think more help would be helpful right now though... too many cooks in the kitchen so to say, but thank you for offering!

Does this mean you're leaving SystemJS behind? And will you provide an upgrade route in that case through ng upgrade or similar? I've built a fairly large app with the cli now, and I'd rather not scrap it.. :3

@yusijs there will be an upgrade route, yes. We will document it.

Can you tell me to load a .scss file? I see there is sass support built in and I am able to get .scss files to process for individual components, but I can't figure out how to load a master style for the whole web app.

3 off the list thanks to #1359

@RobCannon there is no such functionality present in angular-cli. You'll have to use standard scss functionality for that.

@filipesilva, @TheLarkInn: We're punting lazy loading until the webpack branch makes it to master. It's a difficult problem with many moving pieces and we will need a proper prototyping and design phase to solve it.

Great work @filipesilva and @TheLarkInn. I can confirm SCSS is working out of the box with --style scss flag. ng test and ng build --prod broken though

@tapas4java broken? How? Tell me more. It's working in our tests. Did you run ng init to update your files?

@filipesilva I have created new project and ran ng test

Tapass-MacBook-Pro:digiadmin tapas-pc$ ng test
Could not start watchman; falling back to NodeWatcher for file system events.
Visit http://ember-cli.com/user-guide/#watchman for more info.

ERROR in Entry module not found: Error: Can't resolve '/Users/tapas-pc/Documents/Work/digiadmin/undefined/test.ts' in '/Users/tapas-pc/Documents/Work/OpenSourceWork/Angular/angular-cli/addon/ng2/models'

ERROR in Entry module not found: Error: Can't resolve 'sourcemap-istanbul-instrumenter-loader' in '/Users/tapas-pc/Documents/Work/OpenSourceWork/Angular/angular-cli/addon/ng2/models'

@tapas4java looks like missing dependencies. Did you npm install on the webpack branch after checking it out? I know that these dependencies work, because our CI installs a project from scratch.

Thanks @filipesilva ....After npm install tests are working fine. But still getting below message even though it is not blocking anything. Not sure what is that undefined in the path.

ERROR in Entry module not found: Error: Can't resolve '/Users/tapas-pc/Documents/Work/digiadmin/undefined/test.ts' in '/Users/tapas-pc/Documents/Work/OpenSourceWork/Angular/angular-cli/addon/ng2/models'

Is this the only command that fails like this?

@tapas4java can you show me your angular-cli.json?

Thanks @filipesilva, ng test is fine now. However ng serve -prod throwing bunch of warnings in terminal and not able to load the app on browser.

WARNING in CachePlugin - Cache cannot be used because of: DedupePlugin

WARNING in main.b9fc88ca36935dab7714.bundle.js from UglifyJs
Side effects in initialization of unused variable TypeModifier [main.b9fc88ca36935dab7714.bundle.js:640,4]
Side effects in initialization of unused variable BuiltinMethod [main.b9fc88ca36935dab7714.bundle.js:896,4]
Side effects in initialization of unused variable StmtModifier [main.b9fc88ca36935dab7714.bundle.js:1130,4]
Condition left of && always true [main.b9fc88ca36935dab7714.bundle.js:3766,17]
Side effects in initialization of unused variable ProviderAstType [main.b9fc88ca36935dab7714.bundle.js:5094,4]
Side effects in initialization of unused variable PropertyBindingType [main.b9fc88ca36935dab7714.bundle.js:5135,4]
Side effects in initialization of unused variable freeExports [main.b9fc88ca36935dab7714.bundle.js:8040,4]
Side effects in initialization of unused variable freeModule [main.b9fc88ca36935dab7714.bundle.js:8041,4]
Non-strict equality against boolean: != true [main.b9fc88ca36935dab7714.bundle.js:9594,15]
Side effects in initialization of unused variable ViewType [main.b9fc88ca36935dab7714.bundle.js:11402,4]
Side effects in initialization of unused variable HTMLCollection [main.b9fc88ca36935dab7714.bundle.js:13888,4]
Side effects in initialization of unused variable shim [main.b9fc88ca36935dab7714.bundle.js:17207,12]
Dropping unused variable SAFE_SRCSET_PATTERN [main.b9fc88ca36935dab7714.bundle.js:20936,4]
Side effects in initialization of unused variable matchs [main.b9fc88ca36935dab7714.bundle.js:22537,12]
Dropping unused variable __unused [main.b9fc88ca36935dab7714.bundle.js:22778,4]
Side effects in initialization of unused variable depTemplates [main.b9fc88ca36935dab7714.bundle.js:24737,12]
Dropping unused variable EVENT [main.b9fc88ca36935dab7714.bundle.js:24880,4]
Dropping unused variable __unused [main.b9fc88ca36935dab7714.bundle.js:28456,4]
Side effects in initialization of unused variable SecurityContext [main.b9fc88ca36935dab7714.bundle.js:32483,4]
Condition always true [main.b9fc88ca36935dab7714.bundle.js:34846,4]
Dropping unreachable code [main.b9fc88ca36935dab7714.bundle.js:34849,7]
Declarations in unreachable code! [main.b9fc88ca36935dab7714.bundle.js:34851,1]
Dropping unused variable scriptElements [main.b9fc88ca36935dab7714.bundle.js:34851,5]
Dropping unused variable scriptHost [main.b9fc88ca36935dab7714.bundle.js:34852,5]
Dropping unused function _fetchSylesFromState [main.b9fc88ca36935dab7714.bundle.js:35737,9]
Dropping unreachable code [main.b9fc88ca36935dab7714.bundle.js:37186,8]
Declarations in unreachable code! [main.b9fc88ca36935dab7714.bundle.js:37186,8]
Dropping unreachable code [main.b9fc88ca36935dab7714.bundle.js:37186,8]
Declarations in unreachable code! [main.b9fc88ca36935dab7714.bundle.js:37186,8]
Dropping unused variable renderMethod [main.b9fc88ca36935dab7714.bundle.js:40470,12]
Dropping unused variable __unused [main.b9fc88ca36935dab7714.bundle.js:41193,4]
Dropping unused variable __unused [main.b9fc88ca36935dab7714.bundle.js:43260,4]
Condition always true [main.b9fc88ca36935dab7714.bundle.js:47793,2]
Dropping unreachable code [main.b9fc88ca36935dab7714.bundle.js:47798,8]
Side effects in initialization of unused variable freeExports [main.b9fc88ca36935dab7714.bundle.js:47287,5]
Side effects in initialization of unused variable freeModule [main.b9fc88ca36935dab7714.bundle.js:47289,5]
Dropping unused variable key [main.b9fc88ca36935dab7714.bundle.js:47338,1]

WARNING in polyfills.7f6ab7464cbf8b193c44.bundle.js from UglifyJs
Condition left of || always false [polyfills.7f6ab7464cbf8b193c44.bundle.js:3431,63]
Condition left of || always false [polyfills.7f6ab7464cbf8b193c44.bundle.js:3432,62]
Dropping side-effect-free statement [polyfills.7f6ab7464cbf8b193c44.bundle.js:3460,21]
Side effects in initialization of unused variable Zone [polyfills.7f6ab7464cbf8b193c44.bundle.js:2983,5]

Getting below error in browser console:

main.b9fc88cโ€ฆ.bundle.js:2 Uncaught ReferenceError: process is not defined

Those warnings are normal I think, right @TheLarkInn?

I just tried the following

ng new webpack-project --link-cli
cd webpack-project
ng serve -prod

and it seems to work. Did you change anything in your project?

Nope...I didn't change anything.
I have followed below commands again and able to see the same issue.

ng new webpack-project --style scss --prefix db --link-cli
cd webpack-project
ng serve -prod

Did you maybe try playing around with mobile projects as well? The service worker might be caching files for you.

Yup the warning are UglifyJsPlugin informing you about the tree shaking and optimizations it's making. (We can suppress this if you feel it was confusing)

In regards to the second question, to certify it's not the service worker cache tr ry loading the project in q new incognito window.

Actually it was the other way around - I had service worker cache that masked the error. I can reproduce it now as well on non-mobile projects.

@TheLarkInn I have tried loading the app in new incognito window but no luck.

Awesome. thank you for testing this. I know where the problem lies, I'm guessing ng serve --dev does run without problems?

@TheLarkInn You are welcome!

Yes... ng serve works fine ๐Ÿ‘

@tapas4java should be fixed in https://github.com/angular/angular-cli/pull/1395

Awesome, everything works perfectly now except Live reload functionality in dev mode. When I do some changes, I can see the [WDS] App hot update... message on console but the UI is not getting updated actually.

@tapas4java https://github.com/angular/angular-cli/pull/1402 should fix that, thanks for finding it!

Great! When we are planning to merge this branch to master??

@tapas4java when it's ready (dissapointing, I know :p).

It's a big PR with a lot of moving parts so we have to thoroughly test and review it.

I can understand @filipesilva

This weekend I am gonna start a medium size application on this cli . Will provide my feedback and help this branch to mature soon :)

@filipesilva I've been trying out the webpack branch for the last couple hours, but I've run into a problem (not sure if it's a bug): I'm using it with an existing project, but the .scss files in app/public/styles/whatever.scss seems like won't get compiled (they're just simply copied as I can see). What I've basically done is the following:

cd to/wherever/my/project/is
ng init (overwrite the files)
// fix couple things in the code to get webpack work
ng serve

The components use .scss too, and those seem to be working, it's just the files in the public dir which don't. Am I missing something?

@orangesoup actually, sass files in public aren't meant to be compiled on this branch. I kinda get your use-case here though... I guess you wanted some global stylesheet.

Not sure we're gonna support compiling sass in public though. Tell me, would your be able to make it work with just sass support on components?

@filipesilva I'm using it for global stylesheets indeed. Can do a workaround probably, but I really liked this functionality in the old branch.

@TheLarkInn what do you about sass/less/stylus compilation of files in the public dir? Is it possible/reasonable?

We can definitely do it. Warrants discussion. Right now we are taking a per-component approach to implementing CSS.

One option would be to keep a per-component approach and then use ExtractTextPlugin to bundle selected component stylesheets into one or more global css files.

I've been experimenting with this approach as I want to ensure the css just for the _application shell_ to be rendered without having to wait for css embedded in JS.

It would seem logical to import the (scss) stylesheets as dependencies of the root component by convention.

@christianacca Absolutely makes sense. If we are using app-shell does that always prevent FOUC @jeffbcross ?

@filipesilva, @TheLarkInn One more weird thing is that vscode doesn't seem to like Math anymore. After the upgrade Math.random(...) (or any other Math function) says Cannot find name 'Math'. Previously it worked fine. Also, the build still happens and the code works just fine, it's just the editor complaining about it.

I've seen something similar with Boolean errors on manual tsc compilation actual, which seemed weird. Maybe it's related.

Yup, manually compiling with tsc gives me the following errors:

error TS2318: Cannot find global type 'Boolean'.
error TS2318: Cannot find global type 'IArguments'.
error TS2318: Cannot find global type 'Number'.

@TheLarkInn Your recent commit fixed the error with Math, however, now the same happening with Map.

@orangesoup what about having a different folder, like "styles" and then importing what's needed in the component's scss file?

I actually like that idea @cortopy I also get FOUC is a concern. I wonder if app shell solvee this.

@TheLarkInn It's what I've been doing so far to use Foundation and Bootstrap. The drawback is that SASS variables (in the corresponding settings file) have to be imported on every sass file that requires them. On a more positive note, I quite like the idea of just importing what I need, my sass workflow is very similar to writing a component ts file now.

@orangesoup make sure you're using a new project, as the last PR changed files on the generated project.

@cortopy I'll be honest: I'm really lazy (well.. probably most of us are). Let's say you have something that you would want to have in most of your components. It would really annoy me to import it into every single one of them (but it might be just me). I'm fine either way though,

One example: let's say you have some kind of layout scss (flex and stuff) which you would need probably in every component. Would you really want to import it in every single one of them?

@filipesilva I know, I'm always checking the commits and changing the code accordingly. Unless I've missed something Map is not there for some reason.

@orangesoup answer is obviously no!! I've had to do the import thing so far as I couldn't see other way. I don't have to import layouts though, only the vars/settings file. And since it is just one line, I use a snippet to reduce hassle. Layouts and any other framework styles go in the main app styles file.

I totally agree though. It's not ideal, but at least it works

@orangesoup can you tell me the repro steps for me to see that error?

@filipesilva Just a simple ng new name and then add let m: Map<string, int> = new Map<string, int>(); to your app.component.ts constructor or anywhere else.

Ok I tried those steps, but used number instead of int. ng build builds fine - BUT my editor (VSCode) complains about map.

I'm not sure if you're also using VSCode, but that's a problem on it's end because it doesn't support TS2.0 tsconfig options: https://github.com/Microsoft/vscode/issues/9232 (see my comment there).

Oh, sorry, it is number, not int, bit tired. I'm using VSCode, yes. Thanks for the link, I guess we'll just have to wait then!

Please add to the 'Remaining action items' => ng build -prod will add cache busting (add version or hash to the asset file)

๐Ÿ’ƒ

@efriandika it does that already :D

It means it is available in the next release of angular-cli, @filipesilva ? :D

See https://github.com/angular/angular-cli/issues/1356#issuecomment-234154387, which is the best I can say :)

Hehehe.. ๐Ÿ’ƒ
Thanks for the information @filipesilva

@filipesilva --host flag doesn't seem to work. ng serve --host "random.com" still serves the content on localhost. (NG Live Development Server is running on http://localhost:4200.). The help also says it should listen on all interfaces by default (that's how the old branch works at least), but this one definitely doesn't: running ng serve listens only on 127.0.0.1, not 0.0.0.0. The --port flag seems to work though.

Edit: Changing this line: localhost to 0.0.0.0 and the two localhost above to ${commandOptions.host} solves the problem (although the console would show undefined if --host is omitted, that should be handled).

@TheLarkInn can you have a look at @ivoviz's comment?

I just tried out this branch together with the (RC 4) Offline Compilation and it all worked seamlessly! Can't wait for this to be released!

The only thing I found distracting were the warnings issued by several webpack plugins:

WARNING in CachePlugin - Cache cannot be used because of: DedupePlugin

WARNING in main.40c541f973fa25984d7c.bundle.js from UglifyJs
Condition left of && always true [main.40c541f973fa25984d7c.bundle.js:1144,17]
Side effects in initialization of unused variable ViewType [main.40c541f973fa25984d7c.bundle.js:3830,4]
Side effects in initialization of unused variable freeExports [main.40c541f973fa25984d7c.bundle.js:4764,4]
Side effects in initialization of unused variable freeModule [main.40c541f973fa25984d7c.bundle.js:4765,4]
Side effects in initialization of unused variable HTMLCollection [main.40c541f973fa25984d7c.bundle.js:9046,4]
Dropping unused variable SAFE_SRCSET_PATTERN [main.40c541f973fa25984d7c.bundle.js:13191,4]
Side effects in initialization of unused variable matchs [main.40c541f973fa25984d7c.bundle.js:15014,12]
Dropping unused variable __unused [main.40c541f973fa25984d7c.bundle.js:15314,4]
Dropping unused variable __unused [main.40c541f973fa25984d7c.bundle.js:17355,4]
Side effects in initialization of unused variable SecurityContext [main.40c541f973fa25984d7c.bundle.js:21544,4]
Condition always true [main.40c541f973fa25984d7c.bundle.js:23108,4]
Dropping unreachable code [main.40c541f973fa25984d7c.bundle.js:23111,7]
Declarations in unreachable code! [main.40c541f973fa25984d7c.bundle.js:23113,1]
Dropping unused variable scriptElements [main.40c541f973fa25984d7c.bundle.js:23113,5]
Dropping unused variable scriptHost [main.40c541f973fa25984d7c.bundle.js:23114,5]
Condition always true [main.40c541f973fa25984d7c.bundle.js:24660,2]
Dropping unreachable code [main.40c541f973fa25984d7c.bundle.js:24665,8]
Side effects in initialization of unused variable freeExports [main.40c541f973fa25984d7c.bundle.js:24154,5]
Side effects in initialization of unused variable freeModule [main.40c541f973fa25984d7c.bundle.js:24156,5]
Dropping unused variable key [main.40c541f973fa25984d7c.bundle.js:24205,1]
Dropping unused variable __unused [main.40c541f973fa25984d7c.bundle.js:29352,4]
Dropping unused variable __unused [main.40c541f973fa25984d7c.bundle.js:31023,4]

WARNING in polyfills.13671121984805e891bb.bundle.js from UglifyJs
Condition left of || always false [polyfills.13671121984805e891bb.bundle.js:3500,63]
Condition left of || always false [polyfills.13671121984805e891bb.bundle.js:3501,62]
Dropping side-effect-free statement [polyfills.13671121984805e891bb.bundle.js:3529,21]
Side effects in initialization of unused variable Zone [polyfills.13671121984805e891bb.bundle.js:3052,5]

This happens when using the --prod flag.

Is there anything one could do to prevent them? They are also visible in the console.

If you are running ng serve with --prod you will see the first warning. The second warning is to notify the user of optimizations and dead code elimination that is performed. Maybe we can look into adding a 'silenceWarnings' flag or something. I like the information but that's just personal taste and opinionz

@filipesilva I have a feature branch on my local that fixes this one specific feature. I just need to run tests and then setup a PR. If not today tomorrow for sure.

(That.is the host) we just need to set the host flag so 1. It defaults to 'localhost' and like above, set commandOptions.host to replace anywhere is serve.ts where 'localhost' is referenced.

@TheLarkInn Thinking more about it I don't think that a silenceWarnings flag would be needed as one rarely runs ng serve --prod for development purposes where these warnings could be distracting.
So forget my remark and continue the great work ๐Ÿ‘

@filipesilva @TheLarkInn Do you think webpack branch is ready to be used. I know this branch is not stable enough, which is OK. Apart from stability and minor new features, are there any major changes planned?

Also how do I use global SASS files with this branch?

@mmrath this branch is not ready to be used. It is still under active development and we give no guarantees over what might or might not be changed. Until it goes into master it's not the official branch and there should be no expectation of support being given for it.

@filipesilva Thanks for your reply.
Also I get the following warning when I used ngrx. Thought i just add it here, in case you already know it.

WARNING in ./~/@ngrx/core/SyncSubject.js
Cannot find source file '../../lib/SyncSubject.ts': Error: Can't resolve '../../lib/SyncSubject.ts' in '/Users/murali/Projects/dashboard-ui/node_modules/@ngrx/core'
@ ./~/@ngrx/store/dispatcher.js 7:20-53
@ ./~/@ngrx/store/index.js
@ ./src/app/shared/api/http-interceptor.ts
@ ./src/platform/browser-providers.ts
@ ./src/platform/browser.ts
@ ./src/main.ts
@ multi main

When I create a new project ng new foo I am not getting an initial commit on the repo instead all of the files are staged, but not actually committed.

Adding a question (from #1436) about fonts: Can the web pack config handle fonts from third party libs like Bootstrap in a generic way, or should there be a way for the user to specify a custom configuration for things like this? Or perhaps is this just something the developer needs to configure properly in their project?

Somewhat of a web pack newbie, apologies if this seems like a basic question :)

@mmrath I have not seen that error happen, no. Can you give me some reproduction steps so I can try to debug it?

@filipesilva It happens with angularfire2 as well, see: https://github.com/angular/angularfire2/issues/376.

So it's a typescript problem? Hm, odd. @TheLarkInn I guess we can update to TS2.0?

I'd still like to know more about the issue and how to reproduce it... angularfire2 doesn't even use TS2.0 itself, so I find it hard to believe it's a TS bug.

@filipesilva I'm pretty sure as well that TS2.0 has nothing to do with it. The main problem is the generated sourcemap files referencing to non-existent source files. Adding src from the angularfire2 repo manually, and changing the sources attribute in the .map files makes the warnings go away. Should probably just ask @davideast to fix the publishing so it goes away (and the ngrx guys as well).

@filipesilva A sample repo located at https://github.com/mmrath/ng-cli-webpack-test . Please let me know if you are able to reproduce the issue with repo.

Periscope also uses Angularfire2, and does not compile.

Output: https://gist.github.com/hansl/7b53915bfaa55d72ebe842807b0351e4

@Brocco I couldn't repro the ng new issue, this was my result:

kamik@T460p MINGW64 /D/sandbox
$ ng new git-project
(node:6048) fs: re-evaluating native module sources is not supported. If you are using the graceful-fs module, please update it to a more recent version.
installing ng2
  create .editorconfig
  create README.md
  create src\app\app.component.css
  create src\app\app.component.html
  create src\app\app.component.spec.ts
  create src\app\app.component.ts
  create src\app\environments\environment.dev.ts
  create src\app\environments\environment.prod.ts
  create src\app\environments\environment.ts
  create src\app\index.ts
  create src\app\shared\index.ts
  create src\favicon.ico
  create src\index.html
  create src\main.ts
  create src\polyfills.ts
  create src\test.ts
  create src\tsconfig.json
  create src\typings.d.ts
  create angular-cli.json
  create config\environment.js
  create config\karma.conf.js
  create config\protractor.conf.js
  create e2e\app.e2e-spec.ts
  create e2e\app.po.ts
  create e2e\tsconfig.json
  create e2e\typings.d.ts
  create .gitignore
  create package.json
  create public\.gitignore
  create public\.npmignore
  create tslint.json
  create typings.json
Successfully initialized git.
- Installing packages for tooling via npmtypings WARN deprecated 6/21/2016: "registry:dt/jasmine#2.2.0+20160412134438" is deprecated (updated, replaced or removed)
/ Installing packages for tooling via npm
โ”œโ”€โ”€ angular-protractor (global dev)
โ”œโ”€โ”€ jasmine (global dev)
โ””โ”€โ”€ selenium-webdriver (global dev)

Installed packages for tooling via npm.

kamik@T460p MINGW64 /D/sandbox
$ cd git-project/

kamik@T460p MINGW64 /D/sandbox/git-project (master)
$ git st
On branch master
nothing to commit, working directory clean

kamik@T460p MINGW64 /D/sandbox/git-project (master)
$ git log
commit ba79c687ffe8acf2c7e578665a2b4392f6caf871
Author: angular-cli <[email protected]>
Date:   Mon Jul 25 20:49:49 2016 +0100

    chore: initial commit from angular-cli

We also test for git on our e2e test suite, which makes me think your scenario must have been a fluke (or something we're not testing for).
https://github.com/angular/angular-cli/blob/webpack/tests/e2e/e2e_workflow.spec.js#L82

Hello everyone,
I'm not sure whether this is the best place to report this. I have been playing with the webpack branch (and showing people how to do it, explaining it's not stable yet of course).
Someone asked me about using jQuery with that setup. I wouldn't recommend doing that in the first place, but my finding was interesting.

Since we don't use separate typings for e2e and src, this means src gets the global $ declaration from protractor. This throws TS error because of the conflicting declarations.

You can see a sample error here. I have also added to it some steps that can be used to separate the typings manually so that you don't get this error.
But, what I'm asking in this thread is:

Does it make sense to separate the typings for src and e2e?

(maybe via different tsconfig and types as mentioned in #1449?)

Thanks!

Hi.
The output-path option on the build command is not working.
command: ng build --output-path build/

Just out of curiosity @jvbianchi can you try ./build as the output path and tell me if that works?

@TheLarkInn I tried ./build and it doesn't work, same problem.

Thanks everyone. This issue is now closed as the WebPack branch is merged. If you have build issues, please create separate issues on github instead of refering to this.

A NPM package will be published sometime this week with this. It will use a separate dist-tag, probably named webpack.

I want to specially thank @TheLarkInn and @filipesilva for their work on this. Without you, it's clear we'd still be using Broccoli. Good work to both of you!

Can't wait for this to hit npm! Hoping the upgrade path is ready to by then! :)

Was there a conclusion about the convention for global css?
I am also tending toward the concept of global scss folder at the root, that's imported as needed.
Let me know if it was resolved or still open - would love to develop the feature if it's not done yet.

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