feat(core): add output.bundleDependencies config option#1072
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Allow users to control whether third-party dependencies from node_modules are bundled or externalized, independently of testEnvironment. - 'auto' (default): bundle in browser-like envs, externalize in node - true: always bundle all dependencies - false: always externalize all dependencies
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fi3ework
reviewed
Mar 19, 2026
fi3ework
approved these changes
Mar 23, 2026
Rsdoctor Bundle Diff AnalysisFound 12 projects in monorepo, 2 projects with changes. 📊 Quick Summary
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Summary
Background
Rstest ties the dependency bundling strategy to
testEnvironment— browser-like environments (jsdom, happy-dom) bundle allnode_modules, while Node externalizes them. Users have no straightforward way to override this without manually configuringoutput.externalsper-package or reaching intotools.rspack. See #1064.Implementation
output.bundleDependenciesconfig option (boolean, 'true' for browser-like test environments, 'false' for node test environment) toProjectConfigtype definition.pluginExternalto readbundleDependenciesand decide externalization independently oftestEnvironment.name.strip-ansisource code is inlined (bundled) or absent (externalized).output.externals.User Impact
Users can now set
output.bundleDependencies: falsein jsdom to externalize all dependencies, ortruein Node to bundle everything, decoupling the bundling strategy fromtestEnvironment.Related Links
Checklist