perf(build): Use deterministic chunk/module IDs in production#109631
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perf(build): Use deterministic chunk/module IDs in production#109631
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Previously both chunkIds and moduleIds were hardcoded to 'named', which overrode rspack's production default. In production, 'named' embeds file paths in the bundle and generates unstable IDs that invalidate browser caches when unrelated modules are added or removed. Switch to 'deterministic' in production (short stable hashes) while keeping 'named' in development for readable chunk names during debugging. Co-Authored-By: Claude <noreply@anthropic.com>
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Use deterministic chunk and module IDs for production rspack builds
chunkIdsandmoduleIdswere hardcoded to'named'unconditionally, which overrides rspack's production defaults. In production,'named'IDs are derived from file paths — this leaks internal path structure in bundles and, more importantly, causes cache invalidation whenever unrelated modules are added or removed (because insertion order affects IDs).Switching to
'deterministic'in production gives short, stable numeric hashes that don't change unless the module itself changes, which improves long-term browser cache hit rates.'named'is kept in development for readable chunk names during debugging.