// Runs jest with the arguments it is given, and fails the run when jest had to
// force-stop a worker. Jest itself only prints a warning when that happens, and
// its run still passes. The warning means a test left a timer or another open
// handle running. The test scripts in package.json run jest through this file.

"use strict";

const { spawn } = require("child_process");

// The start of the warning that jest prints on stderr after it force-stops a
// worker.
const WORKER_WARNING = "A worker process has failed to exit gracefully";

const jest = spawn("jest", process.argv.slice(2), {
    stdio: ["inherit", "inherit", "pipe"],
});

let stderr = "";
jest.stderr.on("data", (chunk) => {
    process.stderr.write(chunk);
    stderr += chunk;
});

jest.on("close", (code) => {
    if (stderr.includes(WORKER_WARNING)) {
        console.error(
            "script/lib/jest.js: failing the run, because jest force-stopped " +
                "a worker. A test left a timer or another open handle running.",
        );
        process.exit(1);
    }
    process.exit(code ?? 1);
});