How to use the react-dom-factories.h3 function in react-dom-factories

const { name, isUnderConstruction } = sidePanelItems[selectedPane];
    let displayName;
    if (name === "Firefox") {
      displayName = "Firefox Nightly";
    }

    const isConnected =
      name === sidePanelItems.Firefox.name
        ? this.state.firefoxConnected
        : this.state.chromeConnected;
    const isNodeSelected = name === sidePanelItems.Node.name;

    if (isNodeSelected) {
      return dom.div(
        { className: "launch-action-container" },
        dom.h3({}, "Run a node script in the terminal with `--inspect`"),
        isUnderConstruction ? this.renderExperimentalMessage(name) : null
      );
    }

    const connectedStateText = isNodeSelected
      ? null
      : `Please open a tab in ${displayName || name}`;

    return isConnected
      ? connectedStateText
      : this.renderLaunchButton(name, isUnderConstruction);
  }

render() {
    const { config } = this.props;

    return dom.div(
      { className: "launchpad-tabs" },
      dom.h3({}, "Configurations"),
      this.renderConfig(config),
      config.features ?
      (
        dom.h3({}, "Features"),
        this.renderFeatures(config.features)
      ) : null
    );
  }
}

render() {
    const { config } = this.props;

    return dom.div(
      { className: "launchpad-tabs" },
      dom.h3({}, "Configurations"),
      this.renderConfig(config),
      config.features ?
      (
        dom.h3({}, "Features"),
        this.renderFeatures(config.features)
      ) : null
    );
  }
}