> ## Documentation Index
> Fetch the complete documentation index at: https://docs.versori.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Catch

The `.catch()` method is used to add a task to the workflow that will run if any previous task fails. If the catch task
throws an error or returns a rejected promise, workflow execution will skip to the next `.catch()` task in the workflow,
or terminate with an execution error if no subsequent `.catch()` task is present.

## Usage

```typescript theme={null}
import { schedule, fn, ExecutionError } from '@versori/run';

const workflow = schedule('catch-task', '0 * * * *')
    .then(
        fn('fail', (ctx) => {
            throw new Error('Failed');
        })
    )
    .catch(
        fn('catch', (ctx) => {
            // Caught error, error="Failed", cause=Error("Failed")
            ctx.log.info('Caught error', { error: ctx.data.message, cause: ctx.data.cause });

            // (ctx.data instanceof ExecutionError) === true
        })
    );
```

<Info>
  Similar to other usages of the `fn()` function, the catch task can also be an anonymous function which receives a
  Context object as it's first parameter, and can be async (or return a Promise directly).
</Info>