Increasing Access

Summary

This issue tracks the TypeScript migration of client/modules/Preview.

The goal is to convert the module from JavaScript to TypeScript following the TypeScript migration guidelines outlined here

Scope

• Migrate client/modules/Preview to TypeScript
• Preserve existing runtime behavior
• No functional or UI changes intended
• No new features added

Implementation notes

• Migration follows the current incremental TypeScript strategy
• Uses no-verify where needed to avoid blocking the migration
• Lint, tests, and typecheck pass locally

Related PR

• PR: client/modules/Preview: migrate to TypeScript, no-verify #4049

Feature enhancement details

Incremental Migration of Codebase from JavaScript to TypeScript