loadPartialConfig fails to clear the overrides/test/include/exclude fields from its result

[HsuTing]

I'm submitting a bug report

Webpack Version:
3.10.0

Babel Core Version:
7.0.0-beta.53

Babel Loader Version:
8.0.0-beta.3

Please tell us about your environment:
OSX 10.13.5

Current behavior:
I give configFile as options like:

...
options: {
  configFile: '../../babel.config.js',
},
...

And this will not get any plugins or presets with babel.config.js.

Expected/desired behavior:

• If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem along with a gist/jsbin of your webpack configuration.
  Just need to add babel.config.js to options.configFile.

• What is the expected behavior?
  This should work with babel.config.js.

• What is the motivation / use case for changing the behavior?
  I use babel.config.js in a mono repo. As a result, I want to babel.config.js can work, and I only need to write a config file to the root folder.

[HsuTing]

I think here cause this issue.
babel.loadPartialConfig will transform configFile to the real config, but the options of babel-core.transform need configFile.

Here is my patch files:

--- a/node_modules/babel-loader/lib/index.js
+++ b/node_modules/babel-loader/lib/index.js
@@ -79,12 +79,12 @@ function _loader() {
       throw new Error(`babel-loader ^8.0.0-beta.3 requires @babel/core@7.0.0-beta.41, but ` + `you appear to be using "${babel.version}". Either update your ` + `@babel/core version, or pin you babel-loader version to 8.0.0-beta.2`);
     }   
 
-    const config = babel.loadPartialConfig(programmaticOptions);
+    const config = programmaticOptions.configFile ? { options: programmaticOptions } : babel.loadPartialConfig(programmaticOptions);
 
     if (config) {
       let options = config.options;
 
-      if (overrides && overrides.config) {
+      if (overrides && overrides.config && !programmaticOptions.configFile) {
         options = yield overrides.config.call(this, config, {
           source,
           customOptions

This can work.
Hope this information is useful to you.

[loganfsmyth]

but the options of babel-core.transform need configFile.

What makes you say that? With the current setup, config should have everything that would have been read from the config file, so reading it again would be extra work.

[loganfsmyth]

Would you be able to provide an repository with an example of the config not working? I can look into it.

[HsuTing]

Maybe I misunderstand the function.
My repository is private, but I will try to make en example repository.
Thank you!

[HsuTing]

@loganfsmyth Sorry, I found this error is not made by configFile.
When I used overrides, overrides will make this error.
Here is my example repository.
Hope this will help you.

[loganfsmyth]

Perfect, thanks. I see just what the problem is now.

[loganfsmyth]

I've posted babel/babel#8315 which should address this once it is merged and published.

[HsuTing]

OK!
Thank you 😁!