const processId = Number.parseInt(pidRaw, 10);

const parentProcessId = Number.parseInt(ppidRaw, 10);

const rssKb = Number.parseInt(rssKbRaw, 10);

const cpuPercent = Number.parseFloat(cpuRaw);

const cpuPercent = parsePosixCpuPercent(cpuRaw);

if (

!Number.isInteger(processId) ||

!Number.isInteger(parentProcessId) ||

processId,

parentProcessId,

rssKb,

cpuPercent: Number.isFinite(cpuPercent) ? cpuPercent : null,

cpuPercent,

command: command ?? "",

};

})

.filter(Boolean);

}

function parsePosixCpuPercent(raw) {

const text = String(raw ?? "").trim();

if (!/^(?:0|[1-9]\d*)(?:\.\d+)?$/u.test(text)) {

return null;

}

const parsed = Number(text);

return Number.isFinite(parsed) ? parsed : null;

}

function collectPosixProcessTree(rows, rootPid) {

const byParent = new Map();

for (const row of rows) {

});

});

it("does not truncate malformed POSIX CPU samples", async () => {

const sample = await sampleProcess(4321, {

platform: "linux",

runCommand: async () => ({

stdout: " 4321 1 262144 12.5.6 node dist/index.js gateway --port 19080",

stderr: "",

}),

});

expect(sample).toEqual({

aggregateRssMiB: 256,

cpuPercent: null,

processId: 4321,

rssMiB: 256,

});

});

it("samples the POSIX gateway child instead of the pnpm launcher", async () => {

const sample = await sampleProcess(4321, {

platform: "linux",