Develop Reference

How to use static files with Custom Web Component

I have created a web component, uploaded it to npm, and imported it into another project.
I use webpack to bundle all of the code used within the web component, which creates a bundle file (in my case index.js).
This is the structure of my dist folder:
/dist
/static
/images
/fonts
index.js
Everything works, except loading images or fonts (static files). How can this issue be overcome? I have just added the static files to a public github repo at the moment, and load them from there. But I do not think this is the right way to do it.
I guess if the images are not that large, they can be converted into base64 and just bundled with the rest of the code?
Any thoughts
Found a similar question Paths in Web Components are Relative to Root.
The webcomponent specification defines that URLs are always relative
to the main document. This, of course, breaks web component
encapsulation, as you rightly concluded. In other words, the
specification is buggy, and lots of people are complaining about it.

Using webpack and publicPath for static resources

The following question was rewritten, because I have now a working solution, but no answer to the question above.
The repository that shows different scenarios how to use resources packed with webpack is named example-webpack-dynamic-resources. It contains 3 modules:
inline: a solution, but not useful in my context (many resource files)
file: a solution by using the plugin webpack-require-from
public-path: no solution yet, shows how I would like to use __webpack?public_path__.
I think I have read any resource about webpack and publicPath and __webpack_public_path__, but I don't get it to work. I try to dynamically change the path to static resources, but it fails.
Here is my context:
I build a Javascript library that will be used on web pages (HTML, CSS, Javascript).
It provides a lot (>100) static resources to small image files, combined > 500 KB. Only a fraction of it will be used by the user looking at the web site.
Therefore I would like to pack the CSS into the bundle, but keep the image resources in a directory located on the server somewhere. The default path to it will be /img.
As long as I use the same structure (which means, images only under ROOT/img/**, everything is ok.
But the users of the library should be able to configure the path to the image resources on their will.
You will find all relevant files in my example repository example-webpack-dynamic-resources in the module public-path-resources.
webpack.js: Use file-loader for images, which are referenced in CSS files. CSS will be inlined by style-loader and css-loader.
src/public-path.js: Define the global variable with a default (no environment variable).
src/index.js: require first public-path, then the logic.
examples/exam1-root/index.html: Tries to use the assets in the sub directory lib, sets the value therefore to __webpack_public_path__ = '/lib/. Not working.
examples/exam2-different-dirs/index.html: Moves the library to a different dir (not relevant), but uses the originally defined directory pgnv-assets for the assets. Working.
examples/exam3-non-standard-dirs/index.html: Try to use instead my-assets as directory for the assets. Not working.
How could the __webpack_public_path__ defined at runtime in the index.html file?

Not found .map extension from node_modules in rails app

I try to integrate angular to rails app. I extended assets folder by
config.assets.paths << Rails.root.join('node_modules')
and it's good work but my console has serveral messages error
http://localhost:3000/assets/rxjs/Subject.js.map
Rails app couldn't .map extension how to load it

Those are "javascript source map" files. If your Subject.js javascript file has been minimized/uglified, then you can generate and add a "map" file to let browsers know how to "unminimize"/"unuglify" your js file.
If the Subject.js file is written by you, then I guess your environment setup with different node.js and gulp.js modules has it enabled. Make sure those files are copied to your /assets folder as well.
Alternatively, you can disable them by removing special comment at the end of your javascript file:
//# sourceMappingURL=/assets/rxjs/Subject.js.map
Or, less likely, your server might be sending X-SourceMap header.

ERROR:tornado.general:Could not open static file

I'm writing a tornado web app and have a file named "static" with files such as main.js, require.js, elasticsearch.js, and d3.v3.js. The last three are just source code for the javascript libraries.
In my index.html file I have the lines
<script>src={{ static_url("scripts/require.js") }}></script>
<script>require([{{ static_url("scripts/main.js") }}], function () {})</script>
Now when I run the app, I get two errors:
ERROR:tornado.general:Could not open static file '...'
for each of my two files that I'm reading in. Has anyone ever had a similar issue or have any insights as to why this is happening?

Are the js files directly in the static directory or in a scripts subdirectory? Assuming you did something like static_path="static" when creating the application, the files need to live in static/scripts/*.js to match the paths you use in your static_url call.

Getting yeoman/usermin to uglify .kml file references

I am attempting to use yeoman to scafold a web site, my website includes references to files such as images/foo.kml
Running Grunt results in these files being filerev, i.e. the file images/foo.kml is copied to the dist directory but now called images/3333.foo.kml.
The only problem is that usermin task does not replace the references to images/foo.kml in the requested javascript file, but it does manage to process all the references to css and javascript files.
References to images, css and javascript files are normally listed by html tags, eg , etc. In my case I am making a programmtic request to a kml file which is used by a bit of add hock javascript, can usermin deal with type of problem? Or would I be better off putting all of the files that are going to be accessed by a javascript application in a different directory and ensure that references to these files are not subject to filerev?

Bottom line I was using OpenLayers to process the kml files, as the files are not used my img tags and only by a Java script program, the file name has to remain a constant. Since the uglify task has no concept of understanding a file name within a block of Javascript.
My solution was to change the grunt file so that my kml files are copied from the app to the dist directory.