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experience-lwc-typescript-migrate

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Use when converting an existing JavaScript Lightning Web Component (.js, .html, .css) to TypeScript with full type annotations and a matching `.d.ts` file that exposes only the component's `@api` surface. TRIGGER when the user says "convert LWC to TypeScript", "migrate LWC to TS", "rename .js to .ts for this component", "add types to my LWC", "generate .d.ts for this LWC", "type-annotate @api properties", or "produce declare module 'c/componentName' definitions". DO NOT TRIGGER when the user is authoring a brand-new LWC from scratch (use experience-lwc-generate), generating Jest tests for an existing LWC (use experience-lwc-generate), or migrating an Aura component to LWC.

plugins/builder/experience-lwc/skills/experience-lwc-typescript-migrate/SKILL.md

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Last checked
Nov 10, 2026

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1,154
Repository last updated
Nov 6, 2026
License
Apache-2.0

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<!-- adk-managed-skill -->
# Converting LWC to TypeScript

Convert a Lightning Web Component bundle from JavaScript to TypeScript. The
deliverable is a fully-typed `.ts` implementation **plus** a `.d.ts` file
that only exposes `@api` members (the public surface other LWCs consume).

## When to Use This Skill

- User wants to migrate a single component or a folder of components from
  `.js` to `.ts`.
- User needs a `.d.ts` for an existing LWC so other components (or an
  external TypeScript host) can import it safely.
- User is adding type annotations to an already-renamed `.ts` LWC that
  hasn't been properly typed yet.
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