Pick Object Fields

pickFields

The pickFields function creates a new object containing only the specified properties from a source object, preserving accurate TypeScript types.

Function Signature

function pickFields<T extends GenericObject, U extends keyof T>(
  source: T,
  keys: U[]
): { [K in U]: T[K] }

Parameters

• source (T): The source object to pick properties from.
• keys (U[]): An array of property keys to select.

Return Value

• { [K in U]: T[K] }: A new object containing only the specified properties.

Example Usage

Notes

• This function operates on top-level properties only. It does not support deep picking or dot-notation paths.
• It is non-destructive and returns a new object without mutating the original source.

Aliases

The following aliases can be used for the pickFields function:

• pickObjectFields

See Also

• pickFieldsByCondition - Conditionally select object fields.
• deleteFields - Remove specific object fields.
• remapFields - Rename object keys.