canisoon

flat & flatMap array methods

93.9

JS

Methods to flatten any sub-arrays found in an array by concatenating their elements.

Further reading:

  1. Can I use page for: flat & flatMap array methods
  2. MDN article on Array.prototype.flat
  3. MDN article on Array.prototype.flatMap
  4. Article on the history of the `flat` methods
  5. Polyfill for flat & flatMap
  6. Polyfill for this feature is available in the core-js library