everyutil/array/arrayFrequencyMap.js

A comprehensive library of lightweight, reusable utility functions for JavaScript and TypeScript, designed to streamline common programming tasks such as string manipulation, array processing, date handling, and more.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.arrayFrequencyMap = void 0;
/**
 * Returns a map of element frequencies in the array.
 * @author @dailker
 * @template T
 * @param {T[]} array - Input array.
 * @returns {Map<T, number>} Frequency map.
 */
function arrayFrequencyMap(array) {
    const map = new Map();
    for (const item of array) {
        map.set(item, (map.get(item) || 0) + 1);
    }
    return map;
}
exports.arrayFrequencyMap = arrayFrequencyMap;