my-idlers/node_modules/browserslist/browser.js

var BrowserslistError = require('./error')

function noop() {}

module.exports = {
  loadQueries: function loadQueries() {
    throw new BrowserslistError(
      'Sharable configs are not supported in client-side build of Browserslist'
    )
  },

  getStat: function getStat(opts) {
    return opts.stats
  },

  loadConfig: function loadConfig(opts) {
    if (opts.config) {
      throw new BrowserslistError(
        'Browserslist config are not supported in client-side build'
      )
    }
  },

  loadCountry: function loadCountry() {
    throw new BrowserslistError(
      'Country statistics are not supported ' +
        'in client-side build of Browserslist'
    )
  },

  loadFeature: function loadFeature() {
    throw new BrowserslistError(
      'Supports queries are not available in client-side build of Browserslist'
    )
  },

  currentNode: function currentNode(resolve, context) {
    return resolve(['maintained node versions'], context)[0]
  },

  parseConfig: noop,

  readConfig: noop,

  findConfig: noop,

  clearCaches: noop,

  oldDataWarning: noop
}