src/vs/workbench/contrib/interactive/browser/interactiveEditorInput.ts/deserializeCellOutput
function deserializeCellOutput(output: ISerializedCellOutput): IOutputDto {
	return {
		outputId: output.outputId,
		outputs: output.outputs.map(ot => ({
			mime: ot.mime,
			data: VSBuffer.fromByteArray(ot.data)
		})),
		metadata: output.metadata
	};
}