locutus/haskell/list/tails.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.tails = tails;
function tails(items) {
    //  discuss at: https://locutus.io/haskell/list/tails/
    // original by: Kevin van Zonneveld (https://kvz.io)
    //      note 1: Returns all suffixes from longest to shortest, like Haskell Data.List.tails.
    //   example 1: tails([1, 2, 3])
    //   returns 1: [[1, 2, 3], [2, 3], [3], []]
    //   example 2: tails(['a', 'b'])
    //   returns 2: [['a', 'b'], ['b'], []]
    //   example 3: tails([])
    //   returns 3: [[]]
    if (!Array.isArray(items)) {
        return [];
    }
    const out = [];
    for (let i = 0; i <= items.length; i++) {
        out.push(items.slice(i));
    }
    return out;
}