⛩️ Webshrine

Appearance

webshrine / stdtyp/src / FunctionKeys

Type Alias: FunctionKeys<T> ​

FunctionKeys<T>: { [K in keyof T]-?: NonUndefined<T[K]> extends Function ? K : never }[keyof T]

FunctionKeys

Type Parameters ​

• T extends object

Desc ​

Get union type of keys that are functions in object type T

Example ​

ts
type MixedProps = {name: string; setName: (name: string) => void; someKeys?: string; someFn?: (...args: any) => any;};

  // Expect: "setName | someFn"
  type Keys = FunctionKeys<MixedProps>;

Defined in ​

node_modules/.pnpm/utility-types@3.11.0/node_modules/utility-types/dist/mapped-types.d.ts:68