fix(esm): add missing CJS interop runtime requirement

[LingyuCoder]

Summary

Fix ReferenceError: compatGetDefaultExport is not defined when a modern-module build uses experiments.runtimeMode: "rspack", multiple entries, and re-exports a CommonJS default export across chunks.

Root cause

The ESM linker records the generated CommonJS default interop access on the consuming chunk. The existing module-level runtime-requirements hook only associated COMPAT_GET_DEFAULT_EXPORT with the CommonJS provider module, so the consuming entry could emit compatGetDefaultExport(...) without importing the helper from the shared runtime chunk.

Solution

During additional chunk runtime-requirements collection, inspect that chunk's linked external interop records and add COMPAT_GET_DEFAULT_EXPORT when a default interop access is present. Existing runtime-requirement processing then adds the helper and its dependencies to the runtime chunk and emits the required named import.

Tests

Added a focused multi-entry ESM output case. On main, the runtime-mode variant fails with the original ReferenceError; with this change, both webpack and Rspack runtime-mode variants pass.

[github-actions]

📦 Binary Size-limit

Comparing 1a12cac to fix(binding): preserve entry dependency identity (#14964) by harpsealjs

❌ Size increased by 4.00KB from 66.74MB to 66.75MB (⬆️0.01%)

[github-actions]

Rsdoctor Bundle Diff Analysis

Found 5 projects in monorepo, 0 projects with changes.

📊 Quick Summary

Project	Total Size	Gzip Size	Change	Gzip Change
popular-libs	1.7 MB	552.1 KB	0	0
react-1k	823.1 KB	217.0 KB	0	0
react-5k	2.7 MB	663.8 KB	0	0
react-10k	5.6 MB	1.3 MB	0	0
ui-components	4.9 MB	1.4 MB	0	0

Generated by Rsdoctor GitHub Action

[codspeed-hq]

Merging this PR will not alter performance

✅ 46 untouched benchmarks
⏩ 47 skipped benchmarks¹

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_{Comparing seal/fix-modern-module-cjs-default-interop (1a12cac) with main (a7c0970)}

Footnotes

1. 47 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩