Bun worker threads libraries repros

README.md

Piscina & tinypool hang, workerpool hangs with child_process and returns but prints errors with threads.

bun.lock

{
  "lockfileVersion": 1,
  "workspaces": {
    "": {
      "name": "worker-test",
      "dependencies": {
        "piscina": "^5.0.0",
        "tinypool": "^1.0.2",
        "workerpool": "^9.3.2",
      },
      "devDependencies": {
        "@types/bun": "latest",
      },
      "peerDependencies": {
        "typescript": "^5",
      },
    },
  },
  "packages": {
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    "@napi-rs/nice-android-arm-eabi": ["@napi-rs/[email protected]", "", { "os": "android", "cpu": "arm" }, "sha512-5qpvOu5IGwDo7MEKVqqyAxF90I6aLj4n07OzpARdgDRfz8UbBztTByBp0RC59r3J1Ij8uzYi6jI7r5Lws7nn6w=="],

    "@napi-rs/nice-android-arm64": ["@napi-rs/[email protected]", "", { "os": "android", "cpu": "arm64" }, "sha512-GqvXL0P8fZ+mQqG1g0o4AO9hJjQaeYG84FRfZaYjyJtZZZcMjXW5TwkL8Y8UApheJgyE13TQ4YNUssQaTgTyvA=="],

    "@napi-rs/nice-darwin-arm64": ["@napi-rs/[email protected]", "", { "os": "darwin", "cpu": "arm64" }, "sha512-91k3HEqUl2fsrz/sKkuEkscj6EAj3/eZNCLqzD2AA0TtVbkQi8nqxZCZDMkfklULmxLkMxuUdKe7RvG/T6s2AA=="],

    "@napi-rs/nice-darwin-x64": ["@napi-rs/[email protected]", "", { "os": "darwin", "cpu": "x64" }, "sha512-jXnMleYSIR/+TAN/p5u+NkCA7yidgswx5ftqzXdD5wgy/hNR92oerTXHc0jrlBisbd7DpzoaGY4cFD7Sm5GlgQ=="],

    "@napi-rs/nice-freebsd-x64": ["@napi-rs/[email protected]", "", { "os": "freebsd", "cpu": "x64" }, "sha512-j+iJ/ezONXRQsVIB/FJfwjeQXX7A2tf3gEXs4WUGFrJjpe/z2KB7sOv6zpkm08PofF36C9S7wTNuzHZ/Iiccfw=="],

    "@napi-rs/nice-linux-arm-gnueabihf": ["@napi-rs/[email protected]", "", { "os": "linux", "cpu": "arm" }, "sha512-G8RgJ8FYXYkkSGQwywAUh84m946UTn6l03/vmEXBYNJxQJcD+I3B3k5jmjFG/OPiU8DfvxutOP8bi+F89MCV7Q=="],

    "@napi-rs/nice-linux-arm64-gnu": ["@napi-rs/[email protected]", "", { "os": "linux", "cpu": "arm64" }, "sha512-IMDak59/W5JSab1oZvmNbrms3mHqcreaCeClUjwlwDr0m3BoR09ZiN8cKFBzuSlXgRdZ4PNqCYNeGQv7YMTjuA=="],

    "@napi-rs/nice-linux-arm64-musl": ["@napi-rs/[email protected]", "", { "os": "linux", "cpu": "arm64" }, "sha512-wG8fa2VKuWM4CfjOjjRX9YLIbysSVV1S3Kgm2Fnc67ap/soHBeYZa6AGMeR5BJAylYRjnoVOzV19Cmkco3QEPw=="],

    "@napi-rs/nice-linux-ppc64-gnu": ["@napi-rs/[email protected]", "", { "os": "linux", "cpu": "ppc64" }, "sha512-lxQ9WrBf0IlNTCA9oS2jg/iAjQyTI6JHzABV664LLrLA/SIdD+I1i3Mjf7TsnoUbgopBcCuDztVLfJ0q9ubf6Q=="],

    "@napi-rs/nice-linux-riscv64-gnu": ["@napi-rs/[email protected]", "", { "os": "linux", "cpu": "none" }, "sha512-3xs69dO8WSWBb13KBVex+yvxmUeEsdWexxibqskzoKaWx9AIqkMbWmE2npkazJoopPKX2ULKd8Fm9veEn0g4Ig=="],

    "@napi-rs/nice-linux-s390x-gnu": ["@napi-rs/[email protected]", "", { "os": "linux", "cpu": "s390x" }, "sha512-lMFI3i9rlW7hgToyAzTaEybQYGbQHDrpRkg+1gJWEpH0PLAQoZ8jiY0IzakLfNWnVda1eTYYlxxFYzW8Rqczkg=="],

    "@napi-rs/nice-linux-x64-gnu": ["@napi-rs/[email protected]", "", { "os": "linux", "cpu": "x64" }, "sha512-XQAJs7DRN2GpLN6Fb+ZdGFeYZDdGl2Fn3TmFlqEL5JorgWKrQGRUrpGKbgZ25UeZPILuTKJ+OowG2avN8mThBA=="],

    "@napi-rs/nice-linux-x64-musl": ["@napi-rs/[email protected]", "", { "os": "linux", "cpu": "x64" }, "sha512-/rodHpRSgiI9o1faq9SZOp/o2QkKQg7T+DK0R5AkbnI/YxvAIEHf2cngjYzLMQSQgUhxym+LFr+UGZx4vK4QdQ=="],

    "@napi-rs/nice-win32-arm64-msvc": ["@napi-rs/[email protected]", "", { "os": "win32", "cpu": "arm64" }, "sha512-rEcz9vZymaCB3OqEXoHnp9YViLct8ugF+6uO5McifTedjq4QMQs3DHz35xBEGhH3gJWEsXMUbzazkz5KNM5YUg=="],

    "@napi-rs/nice-win32-ia32-msvc": ["@napi-rs/[email protected]", "", { "os": "win32", "cpu": "ia32" }, "sha512-t7eBAyPUrWL8su3gDxw9xxxqNwZzAqKo0Szv3IjVQd1GpXXVkb6vBBQUuxfIYaXMzZLwlxRQ7uzM2vdUE9ULGw=="],

    "@napi-rs/nice-win32-x64-msvc": ["@napi-rs/[email protected]", "", { "os": "win32", "cpu": "x64" }, "sha512-JlF+uDcatt3St2ntBG8H02F1mM45i5SF9W+bIKiReVE6wiy3o16oBP/yxt+RZ+N6LbCImJXJ6bXNO2kn9AXicg=="],

    "@types/bun": ["@types/[email protected]", "", { "dependencies": { "bun-types": "1.2.15" } }, "sha512-U1ljPdBEphF0nw1MIk0hI7kPg7dFdPyM7EenHsp6W5loNHl7zqy6JQf/RKCgnUn2KDzUpkBwHPnEJEjII594bA=="],

    "@types/node": ["@types/[email protected]", "", { "dependencies": { "undici-types": "~6.21.0" } }, "sha512-w9CZGm9RDjzTh/D+hFwlBJ3ziUaVw7oufKA3vOFSOZlzmW9AkZnfjPb+DLnrV6qtgL/LNmP0/2zBNCFHL3F0ng=="],

    "bun-types": ["[email protected]", "", { "dependencies": { "@types/node": "*" } }, "sha512-NarRIaS+iOaQU1JPfyKhZm4AsUOrwUOqRNHY0XxI8GI8jYxiLXLcdjYMG9UKS+fwWasc1uw1htV9AX24dD+p4w=="],

    "piscina": ["[email protected]", "", { "optionalDependencies": { "@napi-rs/nice": "^1.0.1" } }, "sha512-R+arufwL7sZvGjAhSMK3TfH55YdGOqhpKXkcwQJr432AAnJX/xxX19PA4QisrmJ+BTTfZVggaz6HexbkQq1l1Q=="],

    "tinypool": ["[email protected]", "", {}, "sha512-al6n+QEANGFOMf/dmUMsuS5/r9B06uwlyNjZZql/zv8J7ybHCgoihBNORZCY2mzUuAnomQa2JdhyHKzZxPCrFA=="],

    "typescript": ["[email protected]", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ=="],

    "undici-types": ["[email protected]", "", {}, "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ=="],

    "workerpool": ["[email protected]", "", {}, "sha512-Xz4Nm9c+LiBHhDR5bDLnNzmj6+5F+cyEAWPMkbs2awq/dYazR/efelZzUAjB/y3kNHL+uzkHvxVVpaOfGCPV7A=="],
  }
}

package.json

{
  "name": "worker-test",
  "type": "module",
  "private": true,
  "scripts": {
    "piscina": "bun run piscina-main.ts",
    "tinypool": "bun run tinypool-main.ts",
    "workerpool-threads": "bun run workerpool-threads.js",
    "workerpool-childprocess": "bun run workerpool-childprocess.js"
  },
  "devDependencies": {
    "@types/bun": "latest"
  },
  "peerDependencies": {
    "typescript": "^5"
  },
  "dependencies": {
    "piscina": "^5.0.0",
    "tinypool": "^1.0.2",
    "workerpool": "^9.3.2"
  }
}

piscina-main.ts

const path = require("path");
const Piscina = require("piscina");

const piscina = new Piscina({
  filename: path.resolve(__dirname, "piscina-worker.js"),
});

(async function () {
  console.log("Calling");
  const result = await piscina.run({ a: 4, b: 6 });
  console.log("Call finished");
  console.log(result); // Prints 10
})();

piscina-worker.js

module.exports = ({ a, b }) => {
  console.log("Worker called");
  return a + b;
};

tinypool-main.ts

import Tinypool from "tinypool";

const pool = new Tinypool({
  filename: new URL("./tinypool-worker.js", import.meta.url).href,
});
console.log("Calling");
const result = await pool.run({ a: 4, b: 6 });
console.log("Call finished");
console.log(result); // Prints 10

// Make sure to destroy pool once it's not needed anymore
// This terminates all pool's idle workers
await pool.destroy();

tinypool-worker.js

export default ({ a, b }) => {
  console.log("Worker called");
  return a + b;
};

tsconfig.json

{
  "compilerOptions": {
    // Environment setup & latest features
    "lib": ["ESNext"],
    "target": "ESNext",
    "module": "Preserve",
    "moduleDetection": "force",
    "jsx": "react-jsx",
    "allowJs": true,

    // Bundler mode
    "moduleResolution": "bundler",
    "allowImportingTsExtensions": true,
    "verbatimModuleSyntax": true,
    "noEmit": true,

    // Best practices
    "strict": true,
    "skipLibCheck": true,
    "noFallthroughCasesInSwitch": true,
    "noUncheckedIndexedAccess": true,
    "noImplicitOverride": true,

    // Some stricter flags (disabled by default)
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "noPropertyAccessFromIndexSignature": false
  }
}

workerpool-childprocess.js

const workerpool = require("workerpool");
const pool = workerpool.pool({ workerType: "process" });

function add(a, b) {
  console.log("Worker called");
  return a + b;
}

pool
  .exec(add, [3, 4])
  .then(function (result) {
    console.log("result", result); // outputs 7
  })
  .catch(function (err) {
    console.error(err);
  })
  .then(function () {
    pool.terminate(); // terminate all workers when done
  });

workerpool-threads.js

const workerpool = require("workerpool");
const pool = workerpool.pool();

function add(a, b) {
  console.log("Worker called");
  return a + b;
}

pool
  .exec(add, [3, 4])
  .then(function (result) {
    console.log("result", result); // outputs 7
  })
  .catch(function (err) {
    console.error(err);
  })
  .then(function () {
    pool.terminate(); // terminate all workers when done
  });