Please provide detailed instructions on configuring the development environment for creating custom visualizations in Looker, including the necessary steps for installing the required npm packages.Additionally, I need to develop a bar chart displayin...

I have these three fields in my view ( department_id, department_name and a calculated field departmetn_display that is a concatenation of both id and name)I want to create a department filter in dashbaord that will display the filter values as a sin...