next.js

8d789925 - [sourcemaps] Ignore-list sources whose sourcemaps ignore-list everything (#81231)

[sourcemaps] Ignore-list sources whose sourcemaps ignore-list everything (#81231) webpack-only at the moment since I have no easy stack to test this on in Turbopack until we sourcemap the Turbopack runtime. This applies the same heuristic Chrome uses. For sources whose associated sourcemap ignores everyone of its sources, we ignore-list that source even if we didn't find a mapping. This is similar to other common heuristic where the closest mapping is used when no exact mapping exists.