ts-data-forge/dist/functional/optional/impl/optional-flat-map.mjs

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import { isSome } from './optional-is-some.mjs';
import { none } from './optional-none.mjs';
import { unwrap } from './optional-unwrap.mjs';

function flatMap(...args) {
    switch (args.length) {
        case 2: {
            const [optional, flatMapFn] = args;
            return flatMapImpl(optional, flatMapFn);
        }
        case 1: {
            // Curried version
            const [flatMapFn] = args;
            return (optional) => flatMapImpl(optional, flatMapFn);
        }
    }
}
const flatMapImpl = (optional, flatMapFn) => (isSome(optional) ? flatMapFn(unwrap(optional)) : none);

export { flatMap };
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