Method requireElement

www/js/_hyperscript.js:1540–1544

(type, parser, message, root)

      }
    }
    requireElement(type, parser, message, root) {
      var result = this.parseElement(type, parser, root);
      if (!result) parser.raiseError(message || "Expected " + type);
      return result;
    }
    parseAnyOf(types, parser) {
      for (var i = 0; i < types.length; i++) {
        var type = types[i];