oven-sh/bun · error · TypeError

Expected `concurrency` to be a number from 1 and up

Error message

Expected `concurrency` to be a number from 1 and up

What it means

Error "Expected `concurrency` to be a number from 1 and up" thrown in oven-sh/bun.

Source

Thrown at scripts/p-limit.mjs:107

          }
        });
      },
    },
  });

  return generator;
}

export function limitFunction(function_, option) {
  const { concurrency } = option;
  const limit = pLimit(concurrency);

  return (...arguments_) => limit(() => function_(...arguments_));
}

function validateConcurrency(concurrency) {
  if (!((Number.isInteger(concurrency) || concurrency === Number.POSITIVE_INFINITY) && concurrency > 0)) {
    throw new TypeError("Expected `concurrency` to be a number from 1 and up");
  }
}

View on GitHub (pinned to 8c5296ac45)

When it happens

Trigger: Thrown at scripts/p-limit.mjs:107 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/7b568e2298c2c6b4. Report an issue: GitHub.