@reis/seki/src/helpers/color.js

Seki – A modern javascript based Go board renderer and player, that is simple to use, extensible, compact and intuitive.

import {stoneColors} from '../constants/stone.js'
const validStoneColors = Object.values(stoneColors)

/**
 * Swap a stone color
 */
export function swapColor(color) {
  if (color === stoneColors.BLACK) {
    return stoneColors.WHITE
  }
  else if (color === stoneColors.WHITE) {
    return stoneColors.BLACK
  }
}

/**
 * Check if a color is valid
 */
export function isValidColor(color) {
  return validStoneColors.includes(color)
}

//Transform color to numeric value
export function colorToNumeric(color) {
  switch (color) {
    case stoneColors.BLACK:
      return 1
    case stoneColors.WHITE:
      return -1
    default:
      return 0
  }
}