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test: support higher vitest shard parallelism

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This commit is contained in:
Peter Steinberger
2026-05-06 05:57:52 +01:00
parent 981e32d05d
commit 06c490f818
2 changed files with 64 additions and 0 deletions
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22
scripts/vitest-process-group.mjs
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@@ -34,6 +34,26 @@ export function forwardSignalToVitestProcessGroup(params) {
}
}
function ensureProcessListenerCapacity(processObject, eventName, additionalListeners = 1) {
if (
typeof processObject.getMaxListeners !== "function" ||
typeof processObject.setMaxListeners !== "function" ||
typeof processObject.listenerCount !== "function"
) {
return;
}
const currentLimit = processObject.getMaxListeners();
if (currentLimit === 0) {
return;
}
const neededLimit = processObject.listenerCount(eventName) + additionalListeners + 1;
if (neededLimit > currentLimit) {
processObject.setMaxListeners(neededLimit);
}
}
export function installVitestProcessGroupCleanup(params) {
const processObject = params.processObject ?? process;
const platform = params.platform ?? process.platform;
@@ -62,12 +82,14 @@ export function installVitestProcessGroupCleanup(params) {
forward(signal);
};
signalHandlers.set(signal, handler);
ensureProcessListenerCapacity(processObject, signal);
processObject.on(signal, handler);
}
const exitHandler = () => {
forward(cleanupSignal);
};
ensureProcessListenerCapacity(processObject, "exit");
processObject.on("exit", exitHandler);
return () => {