any-type-elimination
any-type-elimination
A structured refactoring skill for finding and replacing any types in TypeScript
with accurate, maintainable alternatives — without breaking the build.
Taxonomy of any Occurrences
Not all any usages are equal. Identify the kind before choosing a replacement strategy.
| Kind | Example | Signal |
|---|---|---|
| Lazy annotation | const user: any = getUser() |
Return type is known, just not written |
| Untyped third-party data | const res: any = await fetch(...) |
Shape is known at runtime, not typed |
| Weak generic | function wrap(val: any): any |
Should be a type parameter |
| Type escape hatch | (obj as any).secret |
Working around a missing/wrong type |
Implicit any |
function f(x) { ... } |
Missing parameter annotation |
any[] collections |
const items: any[] = [] |
Element type is knowable |
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