feat(index): allow `filename` to be a `{Function}` (`options.filename`) #225

owlyowl · 2018-08-03T06:55:10Z

Clean up as per feedback by @shellscape

`Issues`

Fixes Can filename/chunkFilename support function type ? #67

Store filename in options, this way function is called once

jsf-clabot · 2018-08-03T06:55:12Z

All committers have signed the CLA.

alexander-akait

Please describe use case, also please improve docs

…, Adding try catch err

owlyowl · 2018-08-06T02:09:50Z

@evilebottnawi

This PR contains a:
new feature
test update

Motivation / Use-Case
Updated Readme.md to include a use case.

closes #143 and implements improvements as per @shellscape feedback here: https://github.com/webpack-contrib/mini-css-extract-plugin/pull/145

With the deprecation of ExtractTextPlugin for Webpack 4 we need to implement this feature to be at parity with what we had in ExtractTextPlugin with regards to filename options.

This is handy for multiple entry point implementation.

danechitoaie · 2018-09-17T15:24:39Z

Any idea when this will be released. Really needing this feature.

dankanze · 2018-09-27T19:35:38Z

Status?

alexander-akait · 2018-09-27T19:37:10Z

Need rebase

gianlucalarizza · 2018-11-15T05:53:09Z

Hi, I've been waiting for this feature . it would be nice if it were released. I am using Extract Text Plugin in beta for webpack 4 and I would be happy to dismiss it as soon as possible. Many many thanks

sokra · 2018-11-15T11:54:45Z

src/index.js

-                        shortChunkHashMap[chunkId] = chunkMaps.hash[
+            let chunkFilename;
+            try {
+              chunkFilename = JSON.stringify(


That's incorrect. chunkFilename can't be a function. The chunkFilename generation logic need to be embedded into the runtime code.

chunk is the runtime chunk here and the referenced chunk is not known.

sokra · 2018-11-15T11:54:57Z

test/cases/filename-function/webpack.config.js

+  plugins: [
+    new Self({
+      filename: (chunk) => chunk.name == 'app' ? 'this.is.app.css' : `[name].css`,
+      chunkFilename: (chunk) => '[name].css',


chunkFilename can't be a function

sokra · 2018-11-15T11:55:55Z

src/index.js

@@ -170,7 +170,7 @@ class MiniCssExtractPlugin {
                  renderedModules,
                  compilation.runtimeTemplate.requestShortener
                ),
-              filenameTemplate: this.options.filename,
+              filenameTemplate: this.getFilename(chunk, this.options.filename),


I believe you can pass a function to filenameTemplate too. webpack will call it with an information object.

sokra · 2018-11-15T11:56:01Z

src/index.js

@@ -194,7 +194,10 @@ class MiniCssExtractPlugin {
                  renderedModules,
                  compilation.runtimeTemplate.requestShortener
                ),
-              filenameTemplate: this.options.chunkFilename,
+              filenameTemplate: this.getFilename(


sokra · 2018-11-15T11:56:10Z

src/index.js

@@ -366,6 +378,10 @@ class MiniCssExtractPlugin {
    });
  }

+  getFilename(chunk, filename) {


gianlucalarizza · 2018-11-19T08:15:52Z

Dear @sokra,
at what point is the level of approval of the request? Do you think it can be released in times. For many of us, using the filename option as a function is really very important to choose this plugin for Webpack 4. Thank you for your work

pawelwieladek · 2018-12-06T07:31:36Z

Dear @owlyowl
My team is waiting for this feature. I would be grateful if you release it. Thanks!

gianlucalarizza · 2018-12-06T08:59:31Z

Dear @owlyowl
My team is waiting for this feature. I would be grateful if you release it. Thanks!

my team is also waiting for this release.
We are using extract-text-webpack-plugin 4.0 beta version, but since webpack v4 the extract-text-webpack-plugin should not be used for css. :(

alexander-akait · 2018-12-06T09:56:07Z

Feel free to create new PR looks this abadoned

kevinchappell · 2018-12-06T11:23:36Z

@evilebottnawi I just saw this PR after opening #321. I'll use the comments here as a guide to improve #321.

domonique-ncino · 2018-12-18T17:47:58Z

Can't wait until this is merged!!!

alexander-akait · 2018-12-19T12:06:18Z

Need rebase

jrjacobs24 · 2019-04-18T21:35:52Z

Is there any update on when this is expected to get merged? Until then, I found a workaround that seemed to work well for me. I originally had a function for the filename option working, then for some reason after a bit of cleanup I started getting an error and my build would fail. The original error I was seeing was:

TypeError: filename.includes is not a function
    at new MiniCssExtractPlugin (.../node_modules/mini-css-extract-plugin/dist/index.js:139:32)

So I jumped into the code to get more context as to why it was failing and found the line that was causing the error was wrapped in a conditional check for the chunkFileName on ln129. That's when it hit me that the change that I had made that caused it to fail was me removing the chunkFileName because I didn't think I needed it.

Apparently I do though until this PR gets merged. But for those in the same boat I was in, utilizing the chunkFileName option may do the trick for you:

new MiniCssExtractPlugin({
  filename: (chunkData) => {
    const name = chunkData.chunk.name.replace('js/build/', '').replace('components', 'base');

    return `scss/build/${name}-theme.css`;
  },
  chunkFilename: 'scss/build/[name]-theme.css',
})

alexander-akait · 2019-04-19T10:53:36Z

@jrjacobs24 PR was abandoned, can you send it again?

jrjacobs24 · 2019-04-19T14:01:28Z

@evilebottnawi What did you need me to send again? I didn't have anything to do with this PR originally, but I'm happy to help see it through if needed 👍

alexander-akait · 2019-04-19T14:03:45Z

👍 Need resend this PR

shanecav84 · 2019-06-27T18:34:57Z

@evilebottnawi Does #381 do the same thing as what's being requested?

alexander-akait · 2019-06-28T11:06:26Z

@shanecav84 no

shanecav84 · 2019-06-28T12:00:15Z

These look to have overlapping functionality:

moduleFilename (in master):

this.options = Object.assign(
  {
    filename: DEFAULT_FILENAME,
    moduleFilename: () => options.filename || DEFAULT_FILENAME,
  },
  options
)
...
filenameTemplate: ({ chunk: chunkData }) =>
  this.options.moduleFilename(chunkData)

filename (this PR):

this.options = Object.assign({ filename: '[name].css' }, options)
...
filenameTemplate: this.getFilename(chunk, this.options.filename)
...
getFilename(chunk, filename) {
  return typeof filename === 'function' ? filename(chunk) : filename;
}

alexander-akait · 2019-06-28T12:04:13Z

@shanecav84 one option for non async chunk other option for async chunk, sometimes developers need this, but i agree we should simplify this, PR welcome

shanecav84 · 2019-06-28T12:26:13Z

I could help. I'm still not understanding though.

one option for non async chunk other option for async chunk

Which option is which?

Why not just have filename accept a string or a function (like webpack), and point moduleFilename to filename for backward compatibility?

this.options = Object.assign(
  {
    filename: options.filename || DEFAULT_FILENAME,
    moduleFilename: () => options.filename,
  },
  options
)
...
filenameTemplate: typeof this.options.filename === 'function' 
  ? this.options.filename(chunk) 
  : filename

alexander-akait · 2019-06-28T12:31:09Z

@shanecav84 filename !== moduleFilename in some cases, but we can use filename for moduleFilename by default, PR welcome

shanecav84 · 2019-07-01T15:44:59Z

I'm working on rebasing this branch on master. The conflict is here, where both filename and moduleName are being used to set filenameTemplate. Which should we use?

owlyowl · 2019-07-02T07:16:05Z

Sorry for the delay in sorting this PR out. Thanks @shanecav84 and @evilebottnawi
If you let me know how you'd like the conflict resolved I'm happy to sort it out..

I've tried using the @jrjacobs24 workaround without success as I'm generating some theme based style sheets in production. What it results in is making a bunch of css files with hashes in the names that are webpackbootstrap JS so any subsequent css processing fails as the css files actually contain javascript.. see here:

See Here

I'd love to know how to fix this it is driving me insane. Having this feature PR'd in would sort it out I suspect but master has moved out from under me sorry. @evilebottnawi any idea how you'd like the merge conflict corrected?

codecov · 2020-04-23T05:29:16Z

Codecov Report

Merging #225 into master will not change coverage.
The diff coverage is 0.00%.

@@          Coverage Diff           @@
##           master    #225   +/-   ##
======================================
  Coverage    0.00%   0.00%           
======================================
  Files           3       3           
  Lines         241     246    +5     
  Branches       49      50    +1     
======================================
- Misses        198     202    +4     
- Partials       43      44    +1

Impacted Files	Coverage Δ
src/index.js	`0.00% <0.00%> (ø)`

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alexander-akait · 2020-10-09T11:29:31Z

Supported

berthertogen added 6 commits May 14, 2018 13:45

feat: allow filename to be a function

85f6eda

feat: update tests

52cf7f6

feat: remove throw and change isFunction

cf7b731

feat: pass correct chunk

a06f5df

feat: fix test and names

835624c

feat: remove console.log's

44cd88f

Store filename in options, this way function is called once

owlyowl force-pushed the feat/143-filename-function branch 14 times, most recently from 945943f to 378c955 Compare August 3, 2018 08:18

alexander-akait requested changes Aug 3, 2018

View reviewed changes

owlyowl force-pushed the feat/143-filename-function branch from 378c955 to 3149f26 Compare August 6, 2018 01:54

Filename as a function - Added to README.md, Clean up as per feedback…

5b45d7e

…, Adding try catch err

owlyowl force-pushed the feat/143-filename-function branch from 3149f26 to 5b45d7e Compare August 6, 2018 02:06

michael-ciniawsky changed the title ~~Feat/143 filename function - Clean up as per feedback by @shellscape~~ feat: allow filename to be a {Function} Aug 6, 2018

michael-ciniawsky added this to the 0.5.0 milestone Aug 6, 2018

michael-ciniawsky added type: feature semver: minor labels Aug 6, 2018

michael-ciniawsky requested a review from ooflorent August 24, 2018 20:28

sokra requested changes Nov 15, 2018

View reviewed changes

alexander-akait closed this Oct 9, 2020

alexander-akait reopened this Oct 9, 2020

alexander-akait closed this Oct 9, 2020

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feat(index): allow `filename` to be a `{Function}` (`options.filename`) #225

feat(index): allow `filename` to be a `{Function}` (`options.filename`) #225

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feat(index): allow filename to be a {Function} (options.filename) #225

feat(index): allow filename to be a {Function} (options.filename) #225

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feat(index): allow `filename` to be a `{Function}` (`options.filename`) #225

feat(index): allow `filename` to be a `{Function}` (`options.filename`) #225

owlyowl commented Aug 3, 2018 •

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`Issues`

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