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Wix App Registration

After creating any extension file, you must update the main src/extensions.ts file to register the extension with the app.

Why Registration Matters

The Wix CLI discovers extensions through the src/extensions.ts file — it's the single entry point that tells the build system which extensions exist. Without registration:

• Dashboard pages won't appear in the sidebar
• Site widgets won't show in the Wix Editor
• Service plugins won't be called during checkout flows
• Event handlers won't receive webhook deliveries
• Embedded scripts won't be injected into site pages

The most common cause of "my extension isn't working" is a missing .use() call in this file.

Simple Pattern (Recommended for Small Apps)

src/extensions.ts - Import and register extensions directly:

import { app } from "@wix/astro/builders";
import { dataExtension } from "./extensions/data/extensions.ts";
import { dashboardpageMyPage } from "./extensions/dashboard/pages/my-page/extensions.ts";
import { embeddedscriptMyScript } from "./extensions/site/embedded-scripts/my-script/extensions.ts";

export default app()
  .use(dataExtension)
  .use(dashboardpageMyPage)
  .use(embeddedscriptMyScript);

Steps for each new extension:

1. Import the extension from its extensions.ts file
2. Add .use(extensionName) to the app chain
3. Chain multiple extensions together

Advanced Pattern (For Large Apps)

src/index.ts - Re-export all extensions:

export { dashboardpageMyPage } from "./extensions/dashboard/pages/my-page/extensions";
export { embeddedscriptMyScript } from "./extensions/site/embedded-scripts/my-script/extensions";
export { dataExtension } from "./extensions/data/extensions";

src/extensions.ts - Register all extensions programmatically:

import { app } from "@wix/astro/builders";
import * as allExtensions from "./index";

const extensionList = Object.values(allExtensions);

const appBuilder = app();
extensionList.forEach((extension) => {
  appBuilder.use(extension);
});

export default appBuilder;

Extension Types Without Registration

The following extension types do not require extensions.ts files:

• Backend API - Astro server endpoints are auto-discovered

Naming Conventions

Extension export names follow this pattern: {extensiontype}{CamelCaseName}

Examples:

• dashboardpageCartPopupManager
• dashboardpluginBlogPostsBanner
• dashboardmenupluginExportPosts
• embeddedscriptCouponPopup
• sitewidgetCountdownWidget
• sitepluginProductBadge
• ecomshippingratesCustomShipping

The type prefix is the extension type in lowercase with no separators.

Troubleshooting

Weekly Installs

183

Repository

wix/skills

GitHub Stars

3

First Seen

Feb 3, 2026

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