ts-data-forge/dist/functional/ternary-result/impl/ternary-result-map-err.mjs

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import { err } from './ternary-result-err.mjs';
import { isErr } from './ternary-result-is-err.mjs';

function mapErr(...args) {
    switch (args.length) {
        case 2: {
            const [result, mapFn] = args;
            return mapErrImpl(result, mapFn);
        }
        case 1: {
            const [mapFn] = args;
            return (result) => mapErrImpl(result, mapFn);
        }
    }
}
const mapErrImpl = (result, mapFn) => {
    if (isErr(result)) {
        // eslint-disable-next-line total-functions/no-unsafe-type-assertion
        return err(mapFn(result.value));
    }
    // eslint-disable-next-line total-functions/no-unsafe-type-assertion
    return result;
};

export { mapErr };
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