Sourcemaps with sso linker

[Dmitry Skavish]

hi everybody,

I could not figure out how do I build my app and generate sourcemap
url into js file along with all the sources. Anybody can shed some
light here?

That's what I did:

1. I added <set-property name="compiler.useSourceMaps" value="true"/>
to my module and now I have sourcemaps generated.

2. Now if I want to use it I need to manually add the path to the map
to my generated js file, something like that:

//# sourceMappingURL=../WEB-INF/deploy/playerDebug/symbolMaps/AE31C96E973F2818434AA5B24477E385_sourceMap0.json

3. Adding the path gives me the mapping to java classes, but since
there is no sources available it's kind of useless. How do I specify
path to the sources? Is there anyway I can add it to js file?

Is there anyway to automate step 2?

Note that I am just opening the module's html in browser as local
file, not via webserver.

thanks!

--
Dmitry Skavish

[Thomas Broyer]

On Thursday, May 12, 2016 at 3:42:36 AM UTC+2, Dmitry Skavish wrote:

hi everybody,

I could not figure out how do I build my app and generate sourcemap
url into js file along with all the sources. Anybody can shed some
light here?

That's what I did:

1. I added <set-property name="compiler.useSourceMaps" value="true"/>
to my module and now I have sourcemaps generated.

2. Now if I want to use it I need to manually add the path to the map
to my generated js file, something like that:

//# sourceMappingURL=../WEB-INF/deploy/playerDebug/symbolMaps/AE31C96E973F2818434AA5B24477E385_sourceMap0.json

3. Adding the path gives me the mapping to java classes, but since
there is no sources available it's kind of useless. How do I specify
path to the sources? Is there anyway I can add it to js file?

Is there anyway to automate step 2?

Yes; the GWT website does that for instance.

You have to add something like the following to your gwt.xml:

<set-configuration-property name="includeSourceMapUrl" 

     value="http://www.gwtproject.org/src/__HASH___sourceMap__FRAGMENT__.json"/>

__HASH__ and __FRAGMENT__ will be replaced with the appropriate values.

You may also want to pass -saveSource to the GWT compiler so it dumps on disk the source files it used (including those produced by GWT generators during the compilation).

For reference, the commit that added sourcemaps for gwtproject.org: https://gwt.googlesource.com/gwt-site-webapp/+/423256d63e17eb9e117c61d2ba6ad4adbf32b15f%5E%21/

 

Note that I am just opening the module's html in browser as local
file, not via webserver.

I'm afraid some things won't work in this setup (I can't tell if it'll change anything to source maps though); try to use a web server (even if only a "python -m SimpleHTTPServer")

[Dmitry Skavish]

Thanks Thomas! Looks like the url is not inserted if I use sso linker.
Is it known issue?

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--
Dmitry Skavish

[cristian607]

Hi guys!

I am interested by this as well, and see that indeed it doesn't work w/ sso linker. Is there a way to have the sourcemap url inserted, when using sso linker?

I'm migrating some code to a TS app, and I am keeping some valuable GWT code as a "normal" JS lib, consumable from the TS app.

Thanks in advance!

Cristian