uppy/packages/@uppy/informer/src/index.js

const { UIPlugin } = require('@uppy/core')
const { h } = require('preact')

/**
 * Informer
 * Shows rad message bubbles
 * used like this: `uppy.info('hello world', 'info', 5000)`
 * or for errors: `uppy.info('Error uploading img.jpg', 'error', 5000)`
 *
 */
module.exports = class Informer extends UIPlugin {
  static VERSION = require('../package.json').version

  constructor (uppy, opts) {
    super(uppy, opts)
    this.type = 'progressindicator'
    this.id = this.opts.id || 'Informer'
    this.title = 'Informer'

    // set default options
    const defaultOptions = {}
    // merge default options with the ones set by user
    this.opts = { ...defaultOptions, ...opts }
  }

  render = (state) => {
    const { isHidden, message, details } = state.info

    function displayErrorAlert () {
      const errorMessage = `${message} \n\n ${details}`
      alert(errorMessage)
    }

    const handleMouseOver = () => {
      clearTimeout(this.uppy.infoTimeoutID)
    }

    const handleMouseLeave = () => {
      this.uppy.infoTimeoutID = setTimeout(this.uppy.hideInfo, 2000)
    }

    return (
      <div
        className="uppy uppy-Informer"
        aria-hidden={isHidden}
      >
        <p role="alert">
          {message}
          {' '}
          {details && (
            <span
              aria-label={details}
              data-microtip-position="top-left"
              data-microtip-size="medium"
              role="tooltip"
              onClick={displayErrorAlert}
              onMouseOver={handleMouseOver}
              onMouseLeave={handleMouseLeave}
            >
              ?
            </span>
          )}
        </p>
      </div>
    )
  }

  install () {
    const target = this.opts.target
    if (target) {
      this.mount(target, this)
    }
  }
}