kibana/docs/development/plugins/expressions/public/kibana-plugin-plugins-expressions-public.expressionfunction.extract.md

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[Home](./index.md) &gt; [kibana-plugin-plugins-expressions-public](./kibana-plugin-plugins-expressions-public.md) &gt; [ExpressionFunction](./kibana-plugin-plugins-expressions-public.expressionfunction.md) &gt; [extract](./kibana-plugin-plugins-expressions-public.expressionfunction.extract.md)
## ExpressionFunction.extract property
<b>Signature:</b>
```typescript
extract: (state: ExpressionAstFunction['arguments']) => {
state: ExpressionAstFunction['arguments'];
references: SavedObjectReference[];
};
```