Prism.languages.birb = Prism.languages.extend('clike', {
  string: {
    pattern: /r?("|')(?:\\.|(?!\1)[^\\])*\1/,
    greedy: true,
  },
  'class-name': [
    /\b[A-Z](?:[\d_]*[a-zA-Z]\w*)?\b/,

    // matches variable and function return types (parameters as well).
    /\b(?:[A-Z]\w*|(?!(?:var|void)\b)[a-z]\w*)(?=\s+\w+\s*[;,=()])/,
  ],
  keyword:
    /\b(?:assert|break|case|class|const|default|else|enum|final|follows|for|grab|if|nest|new|next|noSeeb|return|static|switch|throw|var|void|while)\b/,
  operator: /\+\+|--|&&|\|\||<<=?|>>=?|~(?:\/=?)?|[+\-*\/%&^|=!<>]=?|\?|:/,
  variable: /\b[a-z_]\w*\b/,
});

Prism.languages.insertBefore('birb', 'function', {
  metadata: {
    pattern: /<\w+>/,
    greedy: true,
    alias: 'symbol',
  },
});