@atlaskit/editor-plugin-paste-options-toolbar/dist/es2019/ui/utils/paste-menu-rules/isNotProse.js

Paste options toolbar for @atlaskit/editor-core

export const isNotProse = text => {
  const trimmed = text.trim();
  if (!trimmed) {
    return false;
  }

  // Check each character: if we find whitespace it's prose-like,
  // if we find a non-ASCII character it's likely CJK/Thai/etc.
  for (let i = 0; i < trimmed.length; i++) {
    const code = trimmed.charCodeAt(i);
    // Whitespace (space, tab, newline, etc.) → prose-like
    if (code === 0x20 || code === 0x09 || code === 0x0a || code === 0x0d) {
      return false;
    }
    // Non-ASCII character → likely a non-Latin script (CJK, Thai, etc.)
    if (code > 0x7f) {
      return false;
    }
  }

  // No whitespace and all ASCII → URL, token, path, etc.
  return true;
};