feat: supports writing files to memory in CSR

[zllkjc]

Summary

#3343

🤖 Generated by Copilot at c84b8b2

Added server-side rendering feature with in-memory file system for improved performance and reliability. Refactored the file reader and the server context to use memfs package. Added a handler to the development server and middleware to enable the feature. Added a new integration test project to verify the feature without writing to disk. Updated the dependencies and types for the memfs package.

Details

🤖 Generated by Copilot at c84b8b2

• Add memfs package as a dependency to enable in-memory file system for server-side rendering (link, link)
• Import IFs type from memfs and add fs property to ModernServerContext class to store the in-memory file system instance for each request context (link, link)
• Modify LruReader class and init function in packages/server/prod-server/src/libs/render/reader.ts to use the fs property instead of the disk for reading and updating file contents (link, link, link, link, link, link, link)
• Remove the check for template file existence on the disk in packages/server/prod-server/src/libs/render/index.ts since the file is read from the in-memory file system (link)
• Add a handler to the ModernServer class in packages/server/prod-server/src/server/modernServer.ts to initialize the file reader with the fs property from the request context (link)
• Remove the code that initializes the file reader in the constructor of the ModernServer class in packages/server/prod-server/src/server/modernServer.ts since the file reader is initialized per request (link)
• Add the serverSideRender option to the DevMiddlewareOptions type in packages/server/server/src/types.ts and to the development middleware configuration in packages/server/server/src/dev-tools/dev-middleware/index.ts to enable the server-side rendering feature for the development middleware (link, link)
• Add a handler to the ModernDevServer class in packages/server/server/src/server/devServer.ts to set the fs property of the request context to the outputFileSystem of the webpack development middleware (link)
• Add an empty line to packages/server/server/src/server/devServer.ts for formatting purposes (link)
• Add a new integration test project in tests/integration/write-to-dist to verify the server-side rendering feature without writing to disk (link, link, link, link, link, link)

Related Issue

Checklist

• I have added changeset via pnpm run change.
• I have updated the documentation.
• I have added tests to cover my changes.

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Latest commit: ce2c8ee

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[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.01 ⚠️

Comparison is base (99693f0) 57.59% compared to head (ce2c8ee) 57.58%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3794      +/-   ##
==========================================
- Coverage   57.59%   57.58%   -0.01%     
==========================================
  Files         672      649      -23     
  Lines       17794    17413     -381     
  Branches     3876     3800      -76     
==========================================
- Hits        10249    10028     -221     
+ Misses       6934     6770     -164     
- Partials      611      615       +4     

see 290 files with indirect coverage changes

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