Prism.languages.protobuf = Prism.languages.extend('clike', {
  keyword: /\b(?:package|import|message|enum)\b/,
  builtin: /\b(?:required|repeated|optional|reserved)\b/,
  primitive: {
    pattern: /\b(?:double|float|int32|int64|uint32|uint64|sint32|sint64|fixed32|fixed64|sfixed32|sfixed64|bool|string|bytes)\b/,
    alias: 'symbol',
  },
});
