bootstrap-vue/src/utils/warn.js

BootstrapVue, with over 40 plugins and more than 80 custom components, custom directives, and over 300 icons, provides one of the most comprehensive implementations of Bootstrap v4 components and grid system for Vue.js. With extensive and automated WAI-AR

import { isBrowser, hasPromiseSupport, hasMutationObserverSupport, 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 (isBrowser) {
    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 (hasPromiseSupport) {
    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 (hasMutationObserverSupport) {
    return false
  } else {
    warn(`${source}: Requires MutationObserver support.`)
    return true
  }
}