Library for easy work with Two-Dimensional Arrays

import { Matrix } from "useful-matrix" 
// for now (v1.0.8) only esm available

const matrixFrom2dArray = new Matrix([
    [1, 2, 3, 4],
    [1, 2, 3, 4],
    [1, 2, 3, 4],
    [1, 2, 3, 4]
])

const matrixFromOptions = new Matrix({
    width: 4,
    height: 4
}) // returns new Matrix([
//     [0, 0, 0, 0],
//     [0, 0, 0, 0],
//     [0, 0, 0, 0],
//     [0, 0, 0, 0]
// ])

• validX
• validY
• validPos
• validMatrixSource
• validRow
• validCol
• randomX
• randomY
• randomPos
• get
• getAllCols
• getRow
• getCol
• getItem
• getAllItems
• getFirstRow
• getFirstCol
• getFirstItem
• getLastRow
• getLastCol
• getLastItem
• set
• setAllCols
• setRow
• setCol
• setItem
• swapRows
• swapCols
• swapItems
• reverseX
• reverseY
• reverseXY
• rotateLeft
• rotateRight
• fillAll
• mapItems