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Nitro's source map minification runs after the bundler writes the maps. On Nitro 3 it deletes sourcesContent, which overrides the module's sourcemapExcludeSources: false. Set nitro.experimental.sourcemapMinify to false so Sentry can show the server source. Fixes #25322
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LGTM. I added a PR in the stack that also fixes that for Cloudflare.
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On Nuxt 5 (Nitro 3), the uploaded server source maps have no
sourcesContent, so Sentry cannot show the source code for server frames. Nitro'snitro:sourcemapplugin deletessourcesContentingenerateBundle, after the bundler wrote it, so the module'ssourcemapExcludeSources: falsehas no effect. The module now also setsnitro.experimental.sourcemapMinify: false. Nuxt 5 passes thenitro:configresult directly tocreateNitro, so the option reaches Nitro 3.The setting is not limited to Nitro 3. Nitro 2 has the same option, and its plugin clears
mappingsof every server map with at least onenode_modulessource. On Nuxt 3 and 4, such maps now keep their mappings. In thenuxt-4-sourcemapsapp, this applies to 7 of 16 server maps. The uploaded maps get larger, but by default Sentry deletes them after the upload.The setting is always applied, also when the user set it. Nitro types the option as
sourcemapMinify?: false, sofalseis the only value a user can set.The
SERVER_MARKERassertion innuxt-5-sourcemapsis enabled again.Fixes #25322