Method map

packages/foam-core/src/common/event.ts:340–340

(fn: (i: T) => O)

  export interface IChainableEvent<T> {
    event: Event<T>;
    map<O>(fn: (i: T) => O): IChainableEvent<O>;
    forEach(fn: (i: T) => void): IChainableEvent<T>;
    filter(fn: (e: T) => boolean): IChainableEvent<T>;
    filter<R>(fn: (e: T | R) => e is R): IChainableEvent<R>;