Misago/frontend/src/components/editor/attachments/attachment/upload.js

import React from "react"
import escapeHtml from "misago/utils/escape-html"

const STRONG = "<strong>%(name)s</strong>"

export default function (props) {
  const filename = interpolate(
    STRONG,
    {
      name: escapeHtml(props.item.filename),
    },
    true
  )

  const message = interpolate(
    gettext("Uploading %(filename)s... %(progress)s"),
    {
      filename,
      progress: props.item.progress + "%",
    },
    true
  )

  return (
    <li className="editor-attachment-upload">
      <div className="editor-attachment-progress-bar">
        <div
          className="editor-attachment-progress"
          style={{ width: props.item.progress + "%" }}
        />
      </div>
      <p
        className="editor-attachment-upload-message"
        dangerouslySetInnerHTML={{ __html: message }}
      />
    </li>
  )
}