LeetCode 1268. Search Suggestions System

/**
 * @param {string[]} products
 * @param {string} searchWord
 * @return {string[][]}
 */
var suggestedProducts = function(products, searchWord) {
    products.sort((a, b) => {
        if (a > b) return 1
        if (a < b) return -1
        return 0
    })
    
    const r = []
    
    for (let i = 1; i<=searchWord.length; i++) {
        const arr = products.filter((s) => s.startsWith(searchWord.substring(0, i))).slice(0, 3)
        //console.log(searchWord.substring(0, i))
        r.push(arr)
    }
    
    return r
};