propOrCrash ()

propOrCrash<T, P, K>(key, errorFactory?): ((x) => WithoutOptValues<T[K]>)
Similar to Opt.propOrCrash, but also supports naked objects.
Type Parameters
- T extends object
- P extends object | Opt<T> = T | Opt<T>
- K extends string | number | symbol = P extends Opt<T>
      ? T extends object
          ? keyof T
          : never
      : P extends object
          ? keyof P
          : never
Parameters
- key: K
- Optional errorFactory: string | ((key) => string | Error)
Returns ((x) => WithoutOptValues<T[K]>)
- - (x): WithoutOptValues<T[K]>
  - Parameters
    - x: P
    Returns WithoutOptValues<T[K]>
Example
```
interface Animal {
  name?: string;
}
const a: Animal = {name: 'Spot'};
propOrCrash<Animal>('name')(a) // 'Spot'
```
- Defined in Opt.ts:2748