Domain
Frontend Development
Skill Profile
Web Components
Custom Elements, Shadow DOM, HTML Templates, Lit, Shoelace, interoperability
Frontend Development
Web Standards & APIs
Roles
4
where this skill appears
Levels
5
structured growth path
Mandatory requirements
20
the other 0 optional
Group
Web Standards & APIs
Last updated
3/17/2026
How to Use
Choose your current level and compare expectations. The items below show what to cover to advance to the next level.
What is Expected at Each Level
The table shows how skill depth grows from Junior to Principal. Click a row to see details.
| Role | Required | Description |
|---|---|---|
| Frontend Developer (Angular) | Required | Understands the Web Components concept and its relation to Angular Elements. Uses third-party Web Components in Angular templates via CUSTOM_ELEMENTS_SCHEMA in component metadata. |
| Frontend Developer (React) | Required | Understands Web Components standards (Custom Elements, Shadow DOM). Integrates third-party web components into React applications. Knows when to use native components vs React abstractions. |
| Frontend Developer (Svelte) | Required | Understands Web Components and their interoperability with Svelte. Compiles Svelte components as custom elements for cross-framework reuse. Works with Shadow DOM and slot-based composition. |
| Frontend Developer (Vue) | Required | Understands Web Components and Vue's custom element support. Wraps Vue components as web components using defineCustomElement. Handles attribute/property binding and event communication. |
| Role | Required | Description |
|---|---|---|
| Frontend Developer (Angular) | Required | Creates Angular Elements for use outside Angular: packaging standalone components as Custom Elements, data passing via attributes/properties, event handling via CustomEvent. |
| Frontend Developer (React) | Required | Creates React wrappers for Web Components with correct TypeScript typing: property mapping, event forwarding, ref support. Implements bidirectional integration between React components and Custom Elements for use in other frameworks. |
| Frontend Developer (Svelte) | Required | Creates Svelte components exported as Web Components through customElement: true, configures shadow DOM and property forwarding. Integrates third-party Web Component UI libraries in SvelteKit, ensures correct SSR hydration. |
| Frontend Developer (Vue) | Required | Creates Web Components from Vue components through defineCustomElement for integration with other frameworks. Configures Vite for building component library as Web Components with correct styling and event handling. |
| Role | Required | Description |
|---|---|---|
| Frontend Developer (Angular) | Required | Designs Angular Elements architecture for cross-framework integration: Shadow DOM strategies, lazy-loading Angular Elements, bundle size optimization for widgets, styling via CSS Parts. |
| Frontend Developer (React) | Required | Designs Web Components usage strategy in the React ecosystem: shared UI primitives as Custom Elements for framework-agnostic design system, Shadow DOM for encapsulation in micro-frontend architecture. Ensures SSR compatibility through Declarative Shadow DOM. |
| Frontend Developer (Svelte) | Required | Designs micro-frontend architecture with Svelte Web Components: style isolation, communication through CustomEvent, shared state. Creates a framework-agnostic component library on Svelte, ensures compatibility with React/Vue/Angular consumers. |
| Frontend Developer (Vue) | Required | Designs Web Components library architecture based on Vue 3 — SSR compatibility, lazy loading, shared state. Solves Shadow DOM styling issues through CSS Parts and Constructable Stylesheets. |
| Role | Required | Description |
|---|---|---|
| Frontend Developer (Angular) | Required | Manages Web Components strategy in the Angular project: standards for creating Angular Elements for micro-frontends, versioning and npm publishing, integration with non-Angular applications. |
| Frontend Developer (React) | Required | Defines Web Components strategy for the React team: when to use WC vs React components, standards for creating framework-agnostic components. Coordinates creation of a shared Custom Elements library for cross-framework usage. |
| Frontend Developer (Svelte) | Required | Defines Web Components strategy for the organization: when to use Svelte custom elements vs native, interaction standards. Coordinates shared component library creation, ensures documentation and testing for multi-framework consumers. |
| Frontend Developer (Vue) | Required | Defines Web Components strategy for the organization — when to use Vue components vs Custom Elements, shared library governance. Introduces publishing and versioning processes for Web Components from Vue codebase. |
| Role | Required | Description |
|---|---|---|
| Frontend Developer (Angular) | Required | Defines micro-frontend architecture through Angular Elements and Web Components: federated modules, shared dependencies strategy, Module Federation and Native Federation integration. |
| Frontend Developer (React) | Required | Shapes Web Components architectural strategy for the organization: standards-based UI primitives, portability strategy between React and other frameworks, design system integration. Defines long-term direction: React-specific vs Web Standards. |
| Frontend Developer (Svelte) | Required | Shapes UI reuse architectural strategy at the organizational level through Web Components and Svelte. Researches Declarative Shadow DOM and HTML Modules prospects for SvelteKit SSR, influences custom element support in the Svelte compiler. |
| Frontend Developer (Vue) | Required | Shapes cross-framework strategy through Web Components — interoperability between Vue and other frameworks, micro-frontend integration. Researches Declarative Shadow DOM, CSS Scope and other standard evolutions. |
Loading comments...
Sign In to join the discussion