Server : nginx/1.18.0 System : Linux localhost 6.14.3-x86_64-linode168 #1 SMP PREEMPT_DYNAMIC Mon Apr 21 19:47:55 EDT 2025 x86_64 User : www-data ( 33) PHP Version : 8.0.16 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /var/www/ecommerce/node_modules/collect.js/docs/api/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

# `collapse()`

The collapse method collapses a collection of arrays into a single, flat collection:

```js
const collection = collect([[1], [{}, 5, {}], ['xoxo']]);

const collapsed = collection.collapse();

collapsed.all();

// [1, {}, 5, {}, 'xoxo']
```

```js
const collection = collect([[1, 2, 3], [4, 5, 6], [7, 8, 9]]);

const collapsed = collection.collapse();

collapsed.all();

// [1, 2, 3, 4, 5, 6, 7, 8, 9]
```

[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/collapse.js)