I’m using Neovim with AstroNvim, and the key maps below will be different depending on your setup. You can find my configuration here.

To find and replace a string in multiple files, you can use this workflow:

• Use telescope to find occurrences of the string (<leader>fw)
• Send the results to the quickfix list (C-q)
• Use the cfdo command to replace the string for all occurrences in the quickfix list: cfdo %s/<old-string>/<new-string>/g | write

To open the quickfix list, type: <leader>xq, or using Trouble: <leader>xQ.

Also check out these blog posts:

• https://benfrain.com/neovim-how-to-do-project-wide-find-and-replace/
• https://thevaluable.dev/vim-search-find-replace/