tamda/dist/list/sortBy.js

Practical functional programming library for TypeScript

import { infer } from '../function/infer';
import { compareString } from '../helpers/compareString';
import { compareValue } from '../helpers/compareValue';
import { opposite } from '../logic/opposite';
import { sort } from './sort';
export function sortBy() {
    return inferred.apply(undefined, arguments);
}
const inferred = infer((array, mapFn, options = { reverse: false }) => sort(array, !options.reverse ? compareFn(mapFn) : opposite(compareFn(mapFn))), args => args[0] instanceof Array);
function compareFn(mapFn) {
    return (itemA, itemB) => {
        const valueA = mapFn(itemA);
        const valueB = mapFn(itemB);
        return typeof valueA === 'string'
            ? compareString(valueA, valueB)
            : compareValue(valueA, valueB);
    };
}
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