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import { IS_BROWSER, HAS_PROMISE_SUPPORT, HAS_MUTATION_OBSERVER_SUPPORT } from '../constants/env'
import { getNoWarn } from './env'

/**
 * Log a warning message to the console with BootstrapVue formatting
 * @param {string} message
 */
export const warn = (message, source = null) => /* istanbul ignore next */ {
  if (!getNoWarn()) {
    console.warn(`[BootstrapVue warn]: ${source ? `${source} - ` : ''}${message}`)
  }
}

/**
 * Warn when no Promise support is given
 * @param {string} source
 * @returns {boolean} warned
 */
export const warnNotClient = source => {
  /* istanbul ignore else */
  if (IS_BROWSER) {
    return false
  } else {
    warn(`${source}: Can not be called during SSR.`)
    return true
  }
}

/**
 * Warn when no Promise support is given
 * @param {string} source
 * @returns {boolean} warned
 */
export const warnNoPromiseSupport = source => {
  /* istanbul ignore else */
  if (HAS_PROMISE_SUPPORT) {
    return false
  } else {
    warn(`${source}: Requires Promise support.`)
    return true
  }
}

/**
 * Warn when no MutationObserver support is given
 * @param {string} source
 * @returns {boolean} warned
 */
export const warnNoMutationObserverSupport = source => {
  /* istanbul ignore else */
  if (HAS_MUTATION_OBSERVER_SUPPORT) {
    return false
  } else {
    warn(`${source}: Requires MutationObserver support.`)
    return true
  }
}