fix: handle child stats without root assets

[puneetdixit200]

What

Initialize the selected child stats object's assets array before appending assets from later child compilations.

Why

When root stats contain only children, and the first child has no assets while a later child does, getViewerData() currently tries to push into undefined and crashes before producing chart data. This is one of the missing-stats-shape cases discussed in #490.

How

Added a focused regression test for that stats shape and guarded the selected child stats with an empty assets array before merging later child assets.

Validation

• NODE_OPTIONS=--openssl-legacy-provider npx jest test/analyzer-get-viewer-data.js --runInBand failed before the fix with Cannot read properties of undefined (reading 'push')
• NODE_OPTIONS=--openssl-legacy-provider npx jest test/analyzer-get-viewer-data.js --runInBand
• npm run build
• NODE_OPTIONS=--openssl-legacy-provider npx jest test/analyzer-get-viewer-data.js test/analyzer.js --runInBand --testTimeout=60000
• npm run lint
• git diff --check

Note: I also tried the full Jest suite with --testTimeout=60000; the analyzer tests passed, but the run failed in test/plugin.js after 128 passed / 4 skipped due to a local Puppeteer afterEach browser cleanup timeout.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 7b233e2

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[linux-foundation-easycla]

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[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

This PR fixes a crash/incorrect handling in getViewerData when bundle stats are stored in children and the “root” child compilation has no assets array, and adds a regression test for that scenario.

Changes:

• Default bundleStats.assets to an empty array after selecting the root child compilation.
• Add a test case covering “root child has no assets, but another child contains assets/modules”.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
test/analyzer-get-viewer-data.js	Adds a regression test ensuring child assets are still surfaced when the root child has no assets.
src/analyzer.js	Ensures bundleStats.assets is initialized after switching bundleStats to the first child compilation.

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[alexander-akait]

Please accept CLA and fix copilot review