oven-sh/bun · error · Error

Unsupported package manager: ${packageManager}

Error message

Unsupported package manager: ${packageManager}

What it means

Error "Unsupported package manager: ${packageManager}" thrown in oven-sh/bun.

Source

Thrown at scripts/runner.node.mjs:1191

      startGroup(`Running ${parallelSafeTests.length} parallel-safe tests (${parallelSafeWidth}-wide)`);
    }
    await Promise.all(parallelSafeTests.map(t => parallelSafeLimit(() => runOneTest(t, parallelSafeWidth > 1))));
  }

  if (vendorTests?.length) {
    for (const { cwd: vendorPath, packageManager, testRunner, testPaths } of vendorTests) {
      if (!testPaths.length) {
        continue;
      }

      const packageJson = join(relative(cwd, vendorPath), "package.json").replace(/\\/g, "/");
      if (packageManager === "bun") {
        const { ok } = await runTest(packageJson, () => spawnBunInstall(execPath, { cwd: vendorPath }));
        if (!ok) {
          continue;
        }
      } else {
        throw new Error(`Unsupported package manager: ${packageManager}`);
      }

      // build
      const buildResult = await spawnBun(execPath, {
        cwd: vendorPath,
        args: ["run", "build"],
        timeout: 60_000,
      });
      if (!buildResult.ok) {
        throw new Error(`Failed to build vendor: ${buildResult.error}`);
      }

      for (const testPath of testPaths) {
        const title = join(relative(cwd, vendorPath), testPath).replace(/\\/g, "/");

        if (testRunner === "bun") {
          await runTest(title, index =>
            spawnBunTest(execPath, testPath, { cwd: vendorPath, env: { TEST_SERIAL_ID: index } }),

View on GitHub (pinned to 8c5296ac45)

When it happens

Trigger: Thrown at scripts/runner.node.mjs:1191 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of oven-sh/bun@8c5296ac45 (2026-08-16). Data as JSON: /api/errors/d7f0894f6e21b92b. Report an issue: GitHub.