Function prop

prop<
    T extends any[]
    | Record<PropertyKey, any>,
    K extends string | number | symbol,
>(
    key: K,
): (target: T) => T[K]
Creates a function that selects a specific property value from an object.

Useful for use with arrays map function when extracting a single property from each object.
Type Parameters
- T extends any[] | Record<PropertyKey, any>
  Object target from which the property will be selected
- K extends string | number | symbol
  Property name in target that will be selected
Parameters
- key: K
  The property name to select
Returns (target: T) => T[K]
select value by key from the target
Deprecated
Use RecordMapper.prop instead.
Example
```
type Data = {demo: string, value: number | null};
const dataArray: Data[] = [{demo: 'hello', value: null}];
const output: string[] = dataArray.map(prop(['demo']));
```
Since
v0.4.2
- Defined in src/lib/RecordMapper.mts:90
prop<K extends PropertyKey>(
key: K,
): <T extends Record<K, any>>(target: T) => T[K]
Type Parameters
- K extends PropertyKey
Parameters
- key: K
Returns <T extends Record<K, any>>(target: T) => T[K]
Deprecated
Use RecordMapper.prop instead.
- Defined in src/lib/RecordMapper.mts:94