@coreui/utils/src/hexToRgb.ts

CoreUI Utilities

/**
 * --------------------------------------------------------------------------
 * CoreUI Utils (__COREUI_VERSION__): hexToRgb.ts
 * Licensed under MIT (https://github.com/coreui/coreui-utils/blob/main/LICENSE)
 * --------------------------------------------------------------------------
 */

/* eslint-disable no-magic-numbers */
const hexToRgb = (color: string) => {
  if (typeof color === 'undefined') {
    throw new TypeError('Hex color is not defined')
  }

  const hex = color.match(/^#(?:[0-9a-f]{3}){1,2}$/i)

  if (!hex) {
    // throw new Error(`${color} is not a valid hex color`)
  }

  let r
  let g
  let b

  if (color.length === 7) {
    r = parseInt(color.slice(1, 3), 16)
    g = parseInt(color.slice(3, 5), 16)
    b = parseInt(color.slice(5, 7), 16)
  } else {
    r = parseInt(color.slice(1, 2), 16)
    g = parseInt(color.slice(2, 3), 16)
    b = parseInt(color.slice(3, 5), 16)
  }

  return `rgba(${r}, ${g}, ${b})`
}

export default hexToRgb