migrate-to-shoehorn

You can migrate 'as' assertions in TypeScript test files to type-safe alternatives by running a migration command that identifies 'as' assertions and replaces them with Shoehorn's type-safe functions. This requires Shoehorn to be installed as a dependency.

Migrating TypeScript test assertions away from 'as' casts eliminates errors caused by type assertions and replaces them with type-safe options. This streamlines test code, improves reliability, and enables passing partial test data without compromising type checking.

The best way to test partial data in TypeScript without 'as' assertions is to use Shoehorn's type-safe functions. This migration approach allows you to pass partial data in tests while maintaining strict type checking for better test data management.

Migrating test assertions to Shoehorn requires the @total-typescript/shoehorn package to be installed as a dependency in your project. You then execute the migration command targeting your test file paths to automatically replace the 'as' assertions.

Yes, you can run the migration on a specific directory by executing the command with an input flag pointing to your test files. This processes the specified test files, identifies the 'as' assertions, and replaces them with Shoehorn functions.

A key limitation is that Shoehorn must be installed as a project dependency before migration. The process targets TypeScript test files relying on 'as' assertions for partial test data and error conditions, so test files without these assertions will not be affected.