Usage

ts-enhance is a CLI tool that iteratively improves TypeScript types in existing code. It can:

• Add type annotations to fix noImplicitAny and noImplicitThis type errors
• Annotate missing nulls and undefineds to fix strictNullChecks type errors
• Remove unnecessary annotations for types that can be inferred
• Remove unnecessary constituents and members of union types and object types

⚡ To start, the ts-enhance command will launch an interactive guide to setting up a configuration file. ⚡

npx ts-enhance

👋 Welcome to ts-enhance! 👋
This will create a new ts-enhance.json for you.
...

After, use ts-enhance --config ts-enhance.json to convert your files with the same settings.

Configuration

To get a deeper understanding of ts-enhance, read the following docs pages in order:

1. Usage.md for an explanation of how ts-enhance works
2. Fixes.md for the type of fixes ts-enhance will generate mutations for
3. Cleanups.md for the post-fix cleaning ts-enhance may apply to files
4. Types.md for configuring how to work with types in mutations
5. Filters.md for using tsquery to ignore sections of source files
6. Custom Mutators.md for including or creating custom mutators

Development

See Development.md. 💖

💙 This package is based on @JoshuaKGoldberg's create-typescript-app.