Allow require.context() passing a fixed chunk name

[yyj08070631]

Feature request

What is the expected behavior?

Support a syntax like require.context('./modules', true, /\.js$/, 'lazy', 'myModule') to allow specifying a fixed chunkName.

What is motivation or use case for adding/changing the behavior?

I want to split some code and pack them into a single file about operating dialogs from a enormous module.

• require.context() doesn't support specifying a fixed chunkName.
• require.ensure() and import() don't support passing expressions as module names.

How should this be implemented in your opinion?

I try to turn webpack\lib\dependencies\RequireContextDependencyParserPlugin.js into a new async-import-plugin. It supports the fifth param which can pass a fixed chunkName. The following is a replaying step.

• Clone the repo async-import-plugin, run npm i.
• Modify some code about managing chunkName in webpack\lib\ContextModule.js.
  
• Run npm run build, then require.asyncImport('./modules', true, /\.js$/, 'lazy', '$myModule$') in index.js can achieve the target.

Are you willing to work on this yourself?
yes

[webpack-bot]

For maintainers only:

• webpack-4
• webpack-5
• bug
• critical-bug
• enhancement
• documentation
• performance
• dependencies
• question

[yyj08070631]

For maintainers only:

• webpack-4
• webpack-5
• bug
• critical-bug
• enhancement
• documentation
• performance
• dependencies
• question

[alexander-akait]

Duplicate #9184