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What is an extension
Create a vendor account
Install the CLI
Your first extension

Build

Add a widget
Add a tab
Add a page
Add a row action
Add a settings panel
Store data with hosted storage
Generated types
Build forms from schemas
Subscribe to Tappify events
Share state between your widgets
Fetch data with hooks
Follow the page's filters
Navigate inside your page
Style with host tokens
Call your own server with procedures
Deploy your server
Add a connector
Raise alerts, banners, and markers
Add actions
Add assistant tools
Add skills and prompts
Add context providers
Add knowledge
Work destinations

Test

The dev server
Preview in the portal
Live preview in your sandbox
Local server during live preview
Doctor checks
Testing with the SDK

Publish

Publishing
Review and what gets checked
Releases, rolling updates, and release notes
Visibility: public, unlisted, private
Your listing
Retiring an extension
Reporting and quality

Reference

Manifest schema
Frontend API
Server API
Testing API
CLI
Build with an agent
Scopes
Pages and slots
Storage limits and rate limits
Events
Errors
What extensions can never do

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Parameters
- __namedParameters
Returns

Frontend API symbols

TableHeader

Groups table header rows.

function TableHeader(__namedParameters): Element;

Groups table header rows.

Parameters

__namedParameters

ComponentPropsWithoutRef<"thead">

Returns

Element

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