@blocknote/core/src/util/string.ts

A "Notion-style" block-based extensible text editor built on top of Prosemirror and Tiptap.

export function camelToDataKebab(str: string): string {
  return "data-" + str.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase();
}

export function filenameFromURL(url: string): string {
  const parts = url.split("/");
  if (
    !parts.length || // invalid?
    parts[parts.length - 1] === "" // for example, URL ends in a directory-like trailing slash
  ) {
    // in this case just return the original url
    return url;
  }
  return parts[parts.length - 1];
}

export function isVideoUrl(url: string) {
  const videoExtensions = [
    "mp4",
    "webm",
    "ogg",
    "mov",
    "mkv",
    "flv",
    "avi",
    "wmv",
    "m4v",
  ];
  try {
    const pathname = new URL(url).pathname;
    const ext = pathname.split(".").pop()?.toLowerCase() || "";
    return videoExtensions.includes(ext);
  } catch (_) {
    return false;
  }
}