migrate-to-shoehorn

Topics in the source

• Migrate to Shoehorn
• Why shoehorn?
• Install
• Migration patterns
• Large objects with few needed properties
• as Type → fromPartial()
• as unknown as Type → fromAny()
• When to use each

shoehorn lets you pass partial data in tests while keeping TypeScript happy. It replaces as assertions with type-safe alternatives. Test code only. Never use shoehorn in production code. Problems with as in tests: Trained not to use it Must manually specify target type Double-as (as unknown as Type) for intentionally wrong data Before: After: Before: After: Before: After: | Function | Use case | | --------------- | -------------------------------------------------- | | fromPartial() | Pass partial data that still type-checks | | fromAny() | Pass intentionally wrong data (keeps autocomplete) | | fromExact() | Force full object (swap with fromPartial later) | 1. Gather requirements - ask user: What test files have as assertions causing problems? Are they dealing with large objects where only some properties matter? Do they need to pass intentionally wrong data for error testing? 2. Install and migrate: [ ] Install: npm i @total-typescript/shoehorn [ ] Find test files with as assertions: grep -r " as [A-Z]" --include=".test.ts" --include=".spec.ts" [ ] Replace as Type with fromPartial() [ ] Replace as unknown as Type with fromAny() [ ] Add imports from @total-typescript/shoehorn [ ] R

This is an excerpt. Refer to the complete source and its current requirements.