The Claude Code TypeScript Migration Starter Kit provides a production‑ready collection of templates, configuration files, and conversion prompts that let you move an existing JavaScript project to TypeScript with minimal setup. Every artifact has been exercised in live codebases, so the migration plan, strict‑mode tsconfig, and conversion prompts behave predictably. By dropping the supplied files into your repository you avoid reinventing the wheel, cut down on manual configuration, and reach a stricter, type‑safe codebase much faster.
What You Get
- Step‑by‑step migration plan template – a markdown guide that breaks the migration into logical phases, from initial analysis to final strict‑mode enablement.
- tsconfig.json strict mode progression configs – a series of ready‑to‑use tsconfig files that let you adopt strict mode incrementally, with comments explaining each flag.
- CommonJS‑to‑TS conversion prompts (30 prompts) – a curated set of prompts you can feed to Claude Code to rewrite module syntax, add type annotations, and resolve import/export patterns.
- Type inference cheatsheet – a concise reference that highlights how TypeScript infers types in common JavaScript patterns, helping you write accurate annotations quickly.
- Error pattern resolution guide – a documented list of typical compilation errors that appear during migration, together with recommended fixes and code snippets.
- README.md quick‑start guide – step‑by‑step instructions that explain where to place each file, how to run the prompts, and how to validate the migration.
How to Use
- Download the ZIP archive after purchase and extract its contents.
- Open README.md and follow the quick‑start instructions to locate the template folders.
- Copy the migration plan template into your project root and adjust the project name and repository URL placeholders.
- Replace your existing
tsconfig.json with the provided strict‑mode progression config that matches your current migration stage.
- Run the 30 conversion prompts through Claude Code, feeding each prompt the relevant source file or directory.
- Consult the type inference cheatsheet whenever you need to decide between explicit annotations and inferred types.
- When the TypeScript compiler reports errors, refer to the error pattern resolution guide to apply the recommended fixes.
- Iterate through the migration phases until all modules compile under the final strict‑mode configuration, then commit the changes.
Who This Is For
- Teams that are transitioning a JavaScript codebase to TypeScript and need a structured, repeatable process.
- Developers who want to enable strict mode incrementally rather than refactor the entire project in one step.
- Engineers tasked with converting large, legacy JavaScript repositories and who require proven prompts and configuration templates to keep the work predictable.
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