perf: speed up accessing stats info

[chenjiahan]

Summary

As Rsbuild only needs the name and size of the assets from the Rspack stats object, using compilation.assets is much faster than using the stats.toJson({ assets: true }).

Before

After

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[Copilot]

Pull Request Overview

This PR optimizes performance by directly accessing compilation.assets instead of calling stats.toJson({ assets: true }) to retrieve asset information, significantly reducing the time needed to gather stats data.

Key Changes:

• Introduced a lightweight RsbuildAsset type containing only name and size properties
• Modified getAssetsFromStats() to extract assets directly from compilation.assets
• Removed assets from RsbuildStatsItem type and eliminated unnecessary stats options configuration

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/core/src/helpers/stats.ts	Introduced RsbuildAsset type and refactored getAssetsFromStats() to access compilation.assets directly; removed build-specific stats options
packages/core/src/types/rsbuild.ts	Removed 'assets' from RsbuildStatsItem type definition
packages/core/src/types/config.ts	Replaced PrintFileSizeAsset type definition with reference to RsbuildAsset
packages/core/src/plugins/fileSize.ts	Updated to use Rspack.Stats instead of RsbuildStatsItem; refactored to work with new RsbuildAsset type
packages/core/src/server/middlewares.ts	Removed optional chaining operators for asset properties

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