bootstrap-vue/src/utils/warn.js

With more than 85 components, over 45 available plugins, several directives, and 1000+ icons, BootstrapVue provides one of the most comprehensive implementations of the Bootstrap v4 component and grid system available for Vue.js v2.6, complete with extens

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
  }
}