zammad/app/frontend/shared/form/plugins/utils.ts

// Copyright (C) 2012-2024 Zammad Foundation, https://zammad-foundation.org/

export type Classes = Record<string, string>

export const clean = (str: string) => str.replace(/\s{2,}/g, ' ').trim()
export const extendClasses = (
  originalClasses: Classes | undefined,
  newClasses: Classes,
) => {
  const mergedClasses = { ...newClasses }

  Object.entries(originalClasses || {}).forEach(([type, originalClass]) => {
    if (!(type in mergedClasses)) {
      mergedClasses[type] = originalClass
    } else {
      mergedClasses[type] = clean(
        `${originalClass || ''} ${newClasses[type] || ''}`,
      )
    }
  })

  return mergedClasses
}