Fix typing error
Fix typing error
jupyter/jupyter-js-output-area,jupyter/jupyter-js-output-area,blink1073/jupyter-js-output-area,blink1073/jupyter-js-output-area,jupyter/jupyter-js-output-area,jasongrout/jupyter-js-output-area,jasongrout/jupyter-js-output-area,jupyter/jupyter-js-output-area