decentraland / builder-server
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fix: run migrations in ts-node transpile-only mode to prevent OOM (#806)

* fix: run migrations in ts-node transpile-only mode to prevent OOM

The migration step (`migrate:docker`) registers ts-node with the project
tsconfig, which defaults to full type-checking. Because tsconfig `include`
is `./**/*`, ts-node builds and type-checks a program spanning the entire
repo (~238 source files) just to run migrations, holding the whole
TypeScript program and checker in memory.

Under Node 18 (libuv 1.44) the heap ceiling was sized off host physical
memory, so this fit. Node 24 (#804) reads the cgroup v2 limit and
auto-sizes old-space to ~512 MB, which the type-checking working set
exceeds, crashing the migration with "Reached heap limit" / "Ineffective
mark-compacts" OOM errors. This is the same root cause as #805, but that
fix only capped the heap on the server process, not the migration.

Switch the migration ts-node to transpile-only. Migrations are already
type-checked at build time (`npm run build`) and `isolatedModules` makes
per-file transpilation safe, so runtime type-checking was pure waste.
This removes the memory hog and speeds migrations up.

Also set NODE_OPTIONS=--max-old-space-size=1536 for the migration step in
entrypoint.sh, giving migrations the same explicit, deterministic heap
ceiling as the server (they share the same 2 GB container).

* fix: scope migration NODE_OPTIONS to the migrate command

Previously NODE_OPTIONS was exported for the whole shell session, so it
also applied to the server process at the end of the script. Both used the
same value (1536) so there was no functional impact, but it was a
maintenance hazard: adjusting the server's explicit flag without noticing
the export would produce confusing behavior.

Set NODE_OPTIONS as a command prefix on the migrate invocation only so it
cannot leak to the server process below.

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Recent builds

Builds Branch Commit Type Ran Committer Via Coverage
27357486919 master fix: run migrations in ts-node transpile-only mode to prevent OOM (#806) * fix: run migrations in ts-node transpile-only mode to prevent OOM The migration step (`migrate:docker`) registers ts-node with the project tsconfig, which defaults to ful... push web-flow github
71.33
27357205665 fix/migrations-oom-transpile-only fix: scope migration NODE_OPTIONS to the migrate command Previously NODE_OPTIONS was exported for the whole shell session, so it also applied to the server process at the end of the script. Both used the same value (1536) so there was no function... Pull #806 LautaroPetaccio github
71.33
27356625163 fix/migrations-oom-transpile-only fix: run migrations in ts-node transpile-only mode to prevent OOM The migration step (`migrate:docker`) registers ts-node with the project tsconfig, which defaults to full type-checking. Because tsconfig `include` is `./**/*`, ts-node builds and ... Pull #806 LautaroPetaccio github
71.33
27350638672 master fix: cap V8 heap explicitly to prevent OOM under Node 24 (#805) Node 24 ships libuv >= 1.45, which (unlike the libuv 1.44 in Node 18) correctly reads cgroup v2 memory limits. As a result Node now sizes the default old-space heap to ~50% of the co... push web-flow github
71.33
27349142186 fix/node24-heap-limit fix: cap V8 heap explicitly to prevent OOM under Node 24 Node 24 ships libuv >= 1.45, which (unlike the libuv 1.44 in Node 18) correctly reads cgroup v2 memory limits. As a result Node now sizes the default old-space heap to ~50% of the container... Pull #805 LautaroPetaccio github
71.33
26755188748 master chore: update Node.js to 24 (#804) Upgrade all CI workflow and Dockerfile Node.js version references to Node 24 (LTS). Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com> push web-flow github
71.33
26721935130 chore/update-node-to-24 chore: update Node.js to 24 Upgrade all CI workflow and Dockerfile Node.js version references to Node 24 (LTS). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Pull #804 decentraland-bot github
71.33
26045832966 master ci: pin third-party GitHub Actions to commit SHAs (#802) * ci: pin third-party GitHub Actions to commit SHAs * ci: update coverallsapp/github-action pin to 648a8eb7 push web-flow github
71.33
26044572706 security/pin-github-actions-sha ci: update coverallsapp/github-action pin to 648a8eb7 Pull #802 decentraland-bot github
71.33
26038275032 security/pin-github-actions-sha ci: pin third-party GitHub Actions to commit SHAs Pull #802 decentraland-bot github
71.87
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