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71f80ae1a5
The `compat-build-26` job in nightly-compat.yml is the only place in the CI
matrix that runs `npm run build` on Node 26 (ci.yml pins CI_NODE_VERSION=24).
It failed every nightly with the runner-reclaimed signature ("The runner has
received a shutdown signal" / "The operation was canceled", no exit code),
always at the same Turbopack compile phase — the classic OOM-kill pattern on
the memory-constrained ubuntu-latest runner.
Root cause: Turbopack's native (Rust, off-V8-heap) allocation is not bounded by
--max-old-space-size and peaks far higher than webpack on OmniRoute's large
module graph (#6409), heavier still under Node 26. Raising the heap does not
help — the codebase's own documented escape hatch for RAM-constrained
environments is the webpack fallback (OMNIROUTE_USE_TURBOPACK=0; see
docs/reference/ENVIRONMENT.md and scripts/build/build-next-isolated.mjs).
Wire that fallback into the Node 26 compat build: it still validates the app
builds on Node 26 (the point of the job) at a much lower memory peak.
Turbopack-on-Node-24 stays covered by ci.yml's build job.
Adds a regression guard (tests/unit/nightly-compat-node26-webpack-8090.test.ts)
asserting the job keeps the webpack fallback so it cannot silently regress.
Class 1 of the triage (shard test failures) was already resolved by #8390,
#8386, #8381, #8383.
Closes #8090
Refs #6949 #6409
65 lines
2.8 KiB
TypeScript
65 lines
2.8 KiB
TypeScript
/**
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* Regression guard for #8090 — "nightly-compat: Node 24/26 build failures".
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*
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* Class 2 of the triage (the live item): the `compat-build-26` job in
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* .github/workflows/nightly-compat.yml is the ONLY place in the entire CI matrix
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* that runs `npm run build` on Node 26 (ci.yml pins CI_NODE_VERSION=24). Every
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* nightly it failed with the runner-reclaimed signature — "The runner has received
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* a shutdown signal" / "The operation was canceled", no exit code, always at the
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* same Turbopack compile phase — the classic OOM-kill pattern on the
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* memory-constrained ubuntu-latest runner.
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*
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* Turbopack's native (Rust, off-V8-heap) allocation is NOT bounded by
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* --max-old-space-size and peaks far higher than webpack on OmniRoute's large module
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* graph (#6409), heavier still under Node 26. The codebase's own documented escape
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* hatch for RAM-constrained environments is the webpack fallback
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* (OMNIROUTE_USE_TURBOPACK=0; see docs/reference/ENVIRONMENT.md). The fix wires that
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* fallback into the Node 26 compat build so it still validates the app *builds* on
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* Node 26 without OOMing the runner.
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*
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* This guard asserts the compat-build-26 job keeps the webpack fallback so a future
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* edit cannot silently flip it back to the OOM-prone Turbopack path.
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*/
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import test from "node:test";
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import assert from "node:assert/strict";
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import fs from "node:fs";
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import path from "node:path";
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import { fileURLToPath } from "node:url";
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const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../..");
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function extractJobBlock(yaml: string, jobName: string): string {
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const lines = yaml.split("\n");
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// Job keys live at 2-space indentation under `jobs:`.
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const startIdx = lines.findIndex((l) => new RegExp(`^ ${jobName}:\\s*$`).test(l));
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assert.ok(startIdx !== -1, `nightly-compat.yml must define the ${jobName} job`);
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const block: string[] = [];
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for (let i = startIdx + 1; i < lines.length; i++) {
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const line = lines[i];
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// Next 2-space-indented key ends the block (but blank lines / deeper indent stay).
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if (/^ \S/.test(line)) break;
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block.push(line);
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}
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return block.join("\n");
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}
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test("#8090 compat-build-26 uses the webpack fallback (OMNIROUTE_USE_TURBOPACK=0) to avoid Node 26 OOM", () => {
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const wf = fs.readFileSync(
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path.join(repoRoot, ".github/workflows/nightly-compat.yml"),
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"utf-8"
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);
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const jobBlock = extractJobBlock(wf, "compat-build-26");
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assert.match(
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jobBlock,
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/npm run build/,
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"compat-build-26 must still run the production build on Node 26"
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);
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assert.match(
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jobBlock,
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/OMNIROUTE_USE_TURBOPACK:\s*["']0["']/,
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"compat-build-26 must set OMNIROUTE_USE_TURBOPACK=0 (webpack fallback) so the sole " +
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"Node 26 build does not OOM the runner on Turbopack's unbounded native memory (#8090/#6409)"
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);
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});
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