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title: Component Types (dw::meta::Component)
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product: DataWeave
version: 2.12
---

# Component Types (dw::meta::Component)

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

Use this topic to understand the DataWeave types in a component descriptor. These types define how
DataWeave represents components and their owned modules in `dw-components.dwl`.

<table><colgroup><col> <col> <col></colgroup><thead><tr><th>Type</th><th>Definition</th><th>Description</th></tr></thead><tbody><tr><td><p>ComponentDescriptor</p></td><td><div><div><p><code>type ComponentDescriptor = { name: ComponentName, resources: { (NameIdentifier): ModuleDescriptor } }</code></p></div></div></td><td><div><div><p>Describes a single component. Contains the following fields:</p></div><div><ul><li><p><code>name</code>: Component identifier referenced from <code>@VisibleTo</code>.</p></li><li><p><code>resources</code>: Modules owned by the component, keyed by <code>NameIdentifier</code>.</p></li></ul></div><div><p><em>Introduced in DataWeave version 2.12.0.</em></p></div></div></td></tr><tr><td><p>ComponentName</p></td><td><div><div><p><code>type ComponentName = String</code></p></div></div></td><td><div><div><p>Identifier of a component that matches the <code>name</code> field of a <code>ComponentDescriptor</code>.</p></div><div><p><em>Introduced in DataWeave version 2.12.0.</em></p></div></div></td></tr><tr><td><p>ComponentsDescriptor</p></td><td><div><div><p><code>type ComponentsDescriptor = Array&lt;ComponentDescriptor&gt;</code></p></div></div></td><td><div><div><p>Top-level type of a <code>dw-components.dwl</code> file: an array of components.</p></div><div><p><em>Introduced in DataWeave version 2.12.0.</em></p></div></div></td></tr><tr><td><p>ModuleDescriptor</p></td><td><div><div><p><code>type ModuleDescriptor = {}</code></p></div></div></td><td><div><div><p>Per-resource metadata. Reserved for future fields; emit <code>{}</code> for every entry.</p></div><div><p><em>Introduced in DataWeave version 2.12.0.</em></p></div></div></td></tr><tr><td><p>NameIdentifier</p></td><td><div><div><p><code>type NameIdentifier = String</code></p></div></div></td><td><div><div><p>Fully qualified DataWeave module name written with the <code>::</code> separator, such as <code>"dw::core::Strings"</code>.</p></div><div><p><em>Introduced in DataWeave version 2.12.0.</em></p></div></div></td></tr></tbody></table>