---
title: 'Functions'
description: 'Functions — Zena documentation.'
status: Draft
statusType: warning
---

::: warning Placeholder
This page hasn't been written yet. The headings below are the planned outline —
see `src/_data/sidebar.js` for the full content plan.
:::

## Arrow functions only

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## Parameters, defaults, and optionals

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## Closures and their cost

<!-- TODO: closures and their cost -->

## Contextual typing

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## Generic functions

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