retry

The retry function executes a provided function and retries on error, up to a maximum number of attempts.

Syntax

retry(callback, attempts)

Parameters

Name	Type	Description
callback	Function	Function to be executed, which may throw an error.
attempts	number	Maximum number of attempts (positive integer).

Return Value

Type	Description
any	Value returned by the callback if it succeeds, or throws if all fail.

Examples

let count = 0;
const result = retry(() => {
  count++;
  if (count < 3) throw new Error('Failure!');
  return 'Success';
}, 5);
// result: 'Success' (after 3 attempts)

retry(() => { throw new Error('Always fails'); }, 2);
// Throws error after 2 attempts

Notes

• Throws a TypeError if the callback is not a function or if attempts is not a positive integer.
• Useful for operations that may temporarily fail, such as network requests.

References

• MDN: try...catch
• MDN: Error